Ivydene Gardens Plants:
Poisonous Plants List

Lion diet in Mozambique:-

africanreuse4

This list of poisonous plants is only meant to provide orientation. It is not exhaustive as knowledge of chemical composition is quite insufficient. The toxicity levels are:-

  • Slightly poisonous - These are given so that their poisonousness is not overestimated.
  • Poisonous
  • Very poisonous
  • Extremely poisonous - Their inclusion in your garden scheme should be carefully considered.

A large amount of these slightly poisonous species would have to be eaten to lead to strong symtoms. Many species in these 4 poison types have such a repulsive taste, that it is hardly imaginable that children would voluntarily eat more than a few berries. The slightly poisonous, poisonous and very poisonous will lead to diarrhoea, vomiting, dizziness or headaches if their plant parts are eaten.

Extremely poisonous will kill you if eaten. You should see a doctor in any case.

Poisoning and Drug Overdose by Kent R. Olson, Ilene B. Anderson, California Poison Control System. Published by McGraw-Hill Professional, 2003. ISBN 0838581722, 9780838581728 644 pages. This may be the best manual on the diagnosis and treatment of poisoning and drug overdose. Plants by Judith A. Alsop, PharmD from pages 309 to 319 gives the common name and botanical name of the poisonous plant with its toxic effect and prehospital emergency measures.

The Poison Garden website originated from John Robertson's role as the first Poison Garden Warden at the Alnwick Garden.

A manual of poisonous plants: chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations/ by L.H. Pammel in 1910-11. This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original. Wikimedia Commons has 161 subcategories of poisonous plant with photos.

Plant Name (with Link to Species most often affected and to photos of the plant)

Poisonous Parts with Link to Toxic Principle

Toxicity

Acanthopanax sieboldianus (Eleutherococcus sieboldianus) - click on photos

Whole plant

poisonous

Aconitum anthora - click on photo

Whole plant

very poisonous

Aconitum napellus 'Newry Blue' - photo
Aconitum napellus root has been eaten in mistake for horseradish. The whole plant, but especially the root contains aconitine; an alkaloid, which is highly poisonous to humans and animals.

Whole plant ....

Aconitum (Monkshood) is irritant to and via the skin

very poisonous

Aconitum x cammarum 'Bressingham Spire' - photo

Whole plant

very poisonous

Aesculus flava 'Vestita'
(humans, cattle, goats) - click on photos

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Aesculus hippocastanum
(humans, cattle, goats) (pigs) - photo and diagram

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Aesculus hippocastanum 'Baumannii'
(humans, cattle, goats) (pigs) - click on photos

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Aesculus hippocastanum 'Pyramidalis'
(humans, cattle, goats) (pigs) - photo

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Aesculus hippocastanum 'Umbraculifera'
(humans, cattle, goats) (pigs) - click on detailed images

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Aesculus parviflora
(humans, cattle, goats) - click on photos

Unripe fruits,
Green Husk

poisonous
slightly poisonous

Ailanthus altissima - photos

bark, seeds

poisonous

Aralia elata - click on photos

bark, seeds

poisonous

Aralia elata 'Variegata' - click on photos

Whole plant

poisonous

Aristolochia macrophylla - see both images
Arum creticum - photos
Arum italicum 'Marmoratum' - click on photo

Whole plant
Whole plant - Arum is a skin and eye irritant
Whole plant

poisonous
poisonous
poisonous

Berberis buxifolia 'Nana' - click on photos

bark, root

poisonous

Berberis candidula - click on detailed images

bark, root

poisonous

Berberis frikartii 'Verrucandi' - click on photo

bark, root

poisonous

Berberis gagnepainii lanceifolia - click on photo

bark, root

poisonous

Berberis julianae - click on more pictures

bark, root

poisonous

Berberis ottawensis 'Superba' - click on photos

bark, root

poisonous

Berberis stenophylla - photos

bark, root

poisonous

Berberis thunbergeii - click on photo

bark, root

poisonous

Berberis thunbergeii 'Atropurpurea' - click on images

bark, root

poisonous

Berberis thunbergeii 'Atropurpurea Nana' - click on photos

bark, root

poisonous

Berberis verruculosa - click on detailed images

bark, root

poisonous

Buddleja 'Cardinal' - click on photo

seeds, leaves

slightly poisonous

Buddleja 'Empire Blue' - click on photos

seeds, leaves

slightly poisonous

Buddleja 'Fascination' - click on photo

seeds, leaves

slightly poisonous

Buddleja 'Nanho Blue' - photo

seeds, leaves

slightly poisonous

Buddleja 'Nanho Purple' - photo

seeds, leaves

slightly poisonous

Buddleja 'Peace' - click on photo

seeds, leaves

slightly poisonous

Buddleja 'Purple Prince' - photo

seeds, leaves

slightly poisonous

Buddleja 'Royal Red' - click on photo

seeds, leaves

slightly poisonous

Buddleja davidii - click on photos

Bulbs - lily-of-the-valley - photo , amaryllis - photos , hyacinth - photos , iris - photos , tulip - photos , daffodil - click on photos , jonquil and narcissus (pets including birds and dogs, cattle, humans)

seeds, leaves

bulb

slightly poisonous

very poisonous

Buxus microphylla 'Faulkner' - photo

Whole plant

very poisonous

Buxus sempervirens (North Carolina State University states for this plant that " it causes only low toxicity if eaten, and, Symptoms - respiratory failure." I used to be under the impression that if you did not breathe you were dead - I would hate to think what high toxicity would do to you. - click on photos in Gallery and view photos in https://commons.wikimedia.org/wiki/Category:Buxus_sempervirens

Whole plant

very poisonous

Buxus sempervirens 'Blauer Heinz' - photo

Whole plant

very poisonous

Buxus sempervirens 'Bullata' - photo

Whole plant

very poisonous

Buxus sempervirens 'Handsworthiensis' - click on photo

Whole plant

very poisonous

Buxus sempervirens 'Rotundifolia' - photo

Whole plant

very poisonous

Buxus sempervirens 'Suffruticosa' - photo

Whole plant

very poisonous

Buxus sempervirens arborescens - click on photos

Whole plant

very poisonous

Calycanthus floridus - click on thumbnail photos

seeds, Whole plant

slightly poisonous

Caragana arborescens - photos and view photos in https://commons.wikimedia.org/wiki/Category:Caragana

Whole plant

slightly poisonous

Catalpa bignonioides - click on photos

Whole plant

slightly poisonous

Celastrus orbiculatus - click on photos

Whole plant

poisonous

Chamaecyparis lawsoniana - photos

Whole plant

poisonous

Chamaecyparis lawsoniana 'Alumigold' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Alumii' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Columnaris' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Ellwood's Gold'

Whole plant

poisonous

Chamaecyparis lawsoniana 'Ellwoodii' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Glauca Spek'

Whole plant

poisonous

Chamaecyparis lawsoniana 'Golden Wonder' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Kelleriis Gold' - photos

Whole plant

poisonous

Chamaecyparis lawsoniana 'Lane' - photos

Whole plant

poisonous

Chamaecyparis lawsoniana 'Minima Glauca' - photo

Whole plant

poisonous

Chamaecyparis lawsoniana 'Stewartii' - photos

Whole plant

poisonous

Chamaecyparis lawsoniana 'Tharandtensis Caesia' - click on photos

Whole plant

poisonous

Chamaecyparis nootkatensis 'Pendula' - photo

Whole plant

poisonous

Chamaecyparis obtusa 'Nana Gracilis' - photo

Whole plant

poisonous

Chamaecyparis pisifera - click on photos

Whole plant

poisonous

Chamaecyparis pisifera 'Boulevard' - photo

Whole plant

poisonous

Chamaecyparis pisifera 'Filifera Aurea Nana' - click on photo

Whole plant

poisonous

Chamaecyparis pisifera 'Filifera Aurea' - photo

Whole plant

poisonous

Chamaecyparis pisifera 'Filifera Nana'- click on photo

Whole plant

poisonous

Chamaecyparis pisifera 'Plumosa Aurea' - photo

Whole plant

poisonous

Chamaecyparis pisifera 'Sungold' - see video

Whole plant

poisonous

Clematis - click on photos and view photos in https://commons.wikimedia.org/wiki/Category:Clematis

Whole plant

poisonous

Clematis 'Baron Veillard' - photos

Whole plant

poisonous

Clematis 'Bees Jubilee' - photos

Whole plant

poisonous

Clematis 'Blue Gem' - photo

Whole plant

poisonous

Clematis 'Comtesse de Bouchard' - photo

Whole plant

poisonous

Clematis 'Dr Ruppel' - photos

Whole plant

poisonous

Clematis 'Duchess of Edinburgh' - photos

Whole plant

poisonous

Clematis 'Ernest Markham' - photos

Whole plant

poisonous

Clematis 'Gipsy Queen' - photos

Whole plant

poisonous

Clematis 'Hagley Hybrid' - photo

Whole plant

poisonous

Clematis 'Henryi' - click on photos

Whole plant

poisonous

Clematis 'Hybrida Sieboldii' - photo

Whole plant

poisonous

Clematis 'Jackmanii' - photo

"A woman is like a tea-bag. You only know how strong she is when she is put in hot water" from Eleanor Roosevelt

Whole plant

poisonous

Clematis 'Jackmanii Superba' - click on photos

Whole plant

poisonous

Clematis 'Jackmanii Alba' - photo

Whole plant

poisonous

Clematis 'Konigskind' - photos

Whole plant

poisonous

Clematis 'Lady Betty Balfour' - photos

Whole plant

poisonous

Clematis 'Lady Northcliffe' - photos

Whole plant

poisonous

Clematis 'Lasurstern' - click on photos

Whole plant

poisonous

Clematis 'Madame le Coultre' - click on photo

Whole plant

poisonous

Clematis 'Miss Bateman' - click on photos

Whole plant

poisonous

Clematis 'Mrs Cholmondeley' - photo

Whole plant

poisonous

Clematis 'Mrs N. Thompson' - photo

Whole plant

poisonous

Clematis 'Multi Blue' - photos

Whole plant

poisonous

Clematis 'Nelly Moser' - photo

Whole plant

poisonous

Clematis 'Niobe' - photos

Whole plant

poisonous

Clematis 'Perle d'Azur' - photo

Whole plant

poisonous

Clematis 'Pink Fantasy' - photos

Whole plant

poisonous

Clematis 'Romantica' - photo

Whole plant

poisonous

Clematis 'Rouge Cardinal' - photo

Whole plant

poisonous

Clematis 'The President' - photo

Whole plant

poisonous

Clematis 'Ville de Lyon' - photos

Whole plant

poisonous

Clematis 'Vyvyan Pennell' - click on photos

Whole plant

poisonous

Clematis 'William Kennett' - photos

Whole plant

poisonous

Clematis Hybriden - see video

Whole plant

poisonous

Clematis alpina - click on varieties

Whole plant

poisonous

Clematis alpina 'Francis Rivis' - photo

Whole plant

poisonous

Clematis durandii - photos

Whole plant

poisonous

Clematis integrifolia - click on photos

Whole plant

poisonous

Clematis macropetala - click on varieties

Whole plant

poisonous

Clematis macropetala 'Markham's Pink' - click on photos

Whole plant

poisonous

Clematis montana - click on varieties

Whole plant

poisonous

Clematis montana 'Elizabeth' - photos

Whole plant

poisonous

Clematis montana 'Grandiflora' - photo

Whole plant

poisonous

Clematis montana 'Rubens' - photo

Whole plant

poisonous

Clematis montana 'Superba' - click on photo

Whole plant

poisonous

Clematis montana 'Tetrarose' - photos

Whole plant

poisonous

Clematis orientalis 'Orange Peel' - click on photos

Whole plant

poisonous

Clematis paniculata - photos

Whole plant

poisonous

Clematis tangutica - click on varieties

Whole plant

poisonous

Clematis texensis - click on varieties

Whole plant

poisonous

Clematis texensis 'Etoile Rose' - photos

Whole plant

poisonous

Clematis texensis 'Gravetye Beauty' - photos

Whole plant

poisonous

Clematis vitalba - photo

Whole plant

poisonous

Clematis viticella - click on varieties

Whole plant

poisonous

Clematis viticella 'Etoile Violette' - photos

Whole plant

poisonous

Clematis viticella 'Huldine' - photos

Whole plant

poisonous

Clematis viticella 'Kermesina' - photo

Whole plant

poisonous

Clematis viticella 'Madame Julia Correvon' - photo

Whole plant

poisonous

Collutea arborescens - photo and diagram and view photos in https://commons.wikimedia.org/wiki/Category:Colutea_arborescens

seeds, leaves

poisonous

Cornus sanguinea - photo
Cornus florida has purplish-black berries which are acrid with glucoside cornine

seeds, leaves

slightly poisonous

Cotinus coggygria - click on thumbnail photos

Whole plant

slightly poisonous

Cotinus coggygria 'Royal Purple'- photo

Whole plant

slightly poisonous

Cupressocyparis - click on photos

Whole plant

poisonous

Cupressocyparis leylandii - photos

Whole plant

poisonous

Cupressocyparis leylandii 'Castlewellan Gold' - photos

Whole plant

poisonous

Cytisus Hybriden

Whole plant

poisonous

Cytisus beanii - click on photo

Whole plant

poisonous

Cytisus decumbens - click on photos

Whole plant

poisonous

Cytisus kewensis - photo

Whole plant

poisonous

Cytisus nigricans 'Cyni' - photos

Whole plant

poisonous

Cytisus praecox - click on photos

Whole plant

poisonous

Cytisus praecox 'Allgold' - click on photo

Whole plant

poisonous

Cytisus praecox 'Hollandia' - click on photo

Whole plant

poisonous

Cytisus purpureus - click on photos

Whole plant

poisonous

Cytisus scoparius - click on thumbnail photos

Whole plant

poisonous

Cytisus scoparius 'Andreanus Splendens' - click on photos

Whole plant

poisonous

Cytisus scoparius 'Burkwoodii' - click on photos

Whole plant

poisonous

Cytisus scoparius 'Butterfly' - photo

Whole plant

poisonous

Cytisus scoparius 'Daisy Hill' - photo

Whole plant

poisonous

Cytisus scoparius 'Dorothy Walpole' - click on photos

Whole plant

poisonous

Cytisus scoparius 'Dragonfly' - click on photos

Whole plant

poisonous

Cytisus scoparius 'Erlkonig' - click on photo

Whole plant

poisonous

Cytisus scoparius 'Firefly' - click on photo

Whole plant

poisonous

Cytisus scoparius 'Goldfinch' - click on photo

Whole plant

poisonous

Cytisus scoparius 'Luna' - click on photo

Whole plant

poisonous

Cytisus scoparius 'Palette' - click on photo

Whole plant

poisonous

Cytisus scoparius 'Roter Favorit' - click on photo

Whole plant

poisonous

Daphne burkwoodii 'Somerset' (cats, dogs, humans)

Whole plant

extremely poisonous

Daphne cneorum (cats, dogs, humans) - click on Thumbnail photos

Whole plant

extremely poisonous

Daphne mezereum 'Rubra Select' (cats, dogs, humans) - click on photos
Daphne mezereum has glucoside, called daphnine and malic acid in its red fruits. It is harmless to birds.

Whole plant

extremely poisonous

Daphne mezereum alba (cats, dogs, humans) - photo

Whole plant

extremely poisonous

Euonymus alatus - click on thumbnail photos

Whole plant

very poisonous

Euonymus alatus 'Compactus' - click on photo

Whole plant

very poisonous

Euonymus europaeus (humans, goats, horses, sheep) - click on thumbnail photos
Euonymus europaeus leaves, flowers and pink-orange berries contain a toxic glucoside called euonymine, which is a violent poison to man.

Whole plant

very poisonous

Euonymus europaeus 'Red Cascade' (humans, goats, horses, sheep) - click on photo

Whole plant

very poisonous

Euonymus fortunei - click on thumbnail photos

Whole plant

very poisonous

Euonymus fortunei 'Coloratus' - click on photo

Whole plant

very poisonous

Euonymus fortunei 'Dart's Blanket' - click on photos

Whole plant

very poisonous

Euonymus fortunei 'Emerald Gaiety' - photo

Whole plant

very poisonous

Euonymus fortunei 'Emerald And Gold' - photo

Whole plant

very poisonous

Euonymus fortunei 'Minimus' - click on photo

Whole plant

very poisonous

Euonymus fortunei 'Sunspot' - click on photos

Whole plant

very poisonous

Euonymus fortunei 'Variegatus' - click on photo

Whole plant

very poisonous

Euonymus fortunei 'Vegetus' - click on photo

Whole plant

very poisonous

Euonymus fortunei radicans - click on photos

Whole plant

very poisonous

Euonymus japonicus - click on photos

Whole plant

very poisonous

Euonymus japonicus 'Aureomarginatus' - see video, which includes reversion back to green

Whole plant

very poisonous

Euonymus phellomanus - click on images

Whole plant

very poisonous

Euonymus planipes - click on images

Whole plant

very poisonous

Euonymus yedoensis - click on photos

Whole plant

very poisonous

Fagus sylvatica - click on thumbnail photos

beechnuts

slightly poisonous

Genista - click on photos

Whole plant

poisonous

Genista lydia - photo

Whole plant

poisonous

Genista radiata - click on photo

Whole plant

poisonous

Genista sagittalis - photo

Whole plant

poisonous

Genista tinctoria - photos

Whole plant

poisonous

Genista tinctoria 'Plena' - photo

Whole plant

poisonous

Gleditsia triacanthos - click on thumbnail photos

leaves

poisonous

Gleditsia triacanthos 'Shademaster' - click on photos

leaves

poisonous

Gleditsia triacanthos 'Skyline' - click on photos

leaves

poisonous

Gleditsia triacanthos 'Sunburst' - photo

leaves

poisonous

Gleditsia triacanthos inermis - click on photos

leaves

poisonous

Gymnocladus dioicus (humans, cattle) - click on thumbnail photos

seeds, leaves

poisonous

Hedera - photos

Whole plant

poisonous

Hedera colchica - click on photo

Whole plant

poisonous

Hedera colchica 'Arborescens' - photo

Whole plant

poisonous

Hedera colchica 'Dentata' - photo

Whole plant

poisonous

Hedera colchica 'Dentata Variegata' - click on photo

Whole plant

poisonous

Hedera helix (cattle, dogs, sheep, humans) - click on thumbnail photos
Purplish-black berries are bitter and acrid; strong emetic. Plant contains a glucoside called hederine, which makes the mouth sore. View photos in https://commons.wikimedia.org/wiki/Hedera_helix

Whole plant

poisonous

Hedera helix 'Arborescens' (cattle, dogs, sheep, humans) - click on photos

Whole plant

poisonous

Hedera helix 'Conglomerata' (cattle, dogs, sheep, humans) - photo

Whole plant

poisonous

Hedera helix 'Gloire de Marengo' (cattle, dogs, sheep, humans) - click on photos

Whole plant

poisonous

Hedera helix 'Goldheart' (cattle, dogs, sheep, humans) - click on photo

Whole plant

poisonous

Hedera helix 'Woerner' (cattle, dogs, sheep, humans) - click on photos

Whole plant

poisonous

Hedera helix hibernica (cattle, dogs, sheep, humans) - photo

Whole plant

poisonous

Ilex - click on photos click on photo in ilex photo collection or individual ilex

Whole plant

poisonous

Ilex 'Washington'

Whole plant

poisonous

Ilex altaclerensis 'Golden King' - click on photos

Whole plant

poisonous

Ilex aquifolium (children) - click on photos

Whole plant

very poisonous

Ilex aquifolium 'Alaska' (children) - click on photos

Whole plant

very poisonous

Ilex aquifolium 'Argentea Marginata' (children) - photo

Whole plant

very poisonous

Ilex aquifolium 'J.C. Van Tol' (children) - photo

Whole plant

very poisonous

Ilex aquifolium 'Pyramidalis' (children) - photo

Whole plant

very poisonous

Ilex aquifolium 'Sharpy' (children) - photo

Whole plant

very poisonous

Ilex crenata - click on thumbnail photos

Whole plant

very poisonous

Ilex crenata 'Convexa' - click on photos

Whole plant

very poisonous

Ilex crenata 'Glorie Gem' - click on photo

Whole plant

very poisonous

Ilex crenata 'Golden Gem' - photo

Whole plant

very poisonous

Ilex crenata 'Green Lustre' - click on photos

Whole plant

very poisonous

Ilex crenata 'Rotundifolia' - click on photo

Whole plant

very poisonous

Ilex crenata 'Stokes' - click on photo

Whole plant

very poisonous

Ilex meserveae - click on thumbnail photos

Whole plant

very poisonous

Ilex meserveae 'Blue Angel' - click on photo

Whole plant

very poisonous

Ilex meserveae 'Blue Maid' - click on photo

Whole plant

very poisonous

Ilex meserveae 'Blue Prince' - click on photo

Whole plant

very poisonous

Ilex meserveae 'Blue Princess' - photo

Whole plant

very poisonous

Ilex verticillata - click on thumbnail photos

Whole plant

very poisonous

Juniperus horizontalis - click on thumbnail photos

Whole plant

very poisonous

Juniperus horizontalis 'Andorra Compact' - photo

Whole plant

very poisonous

Juniperus horizontalis 'Prince of Wales' - photo

Whole plant

very poisonous

Juniperus horizontalis 'Wiltonii' - photo

Whole plant

very poisonous

Juniperus media - click on detailed images

Whole plant

very poisonous

Juniperus media 'Hetzii' - click on photos

Whole plant

very poisonous

Juniperus media 'Mint Julep' - photo

Whole plant

very poisonous

Juniperus media 'Old Gold' - photo

Whole plant

very poisonous

Juniperus media 'Pfitzeriana' - photo

Whole plant

extremely poisonous

Juniperus media 'Pfitzeriana Aurea' - photo

Whole plant

extremely poisonous

Juniperus sabina - click on thumbnail photos and view photos in https://commons.wikimedia.org/wiki/Juniperus_sabina

Whole plant

extremely poisonous

Juniperus sabina 'Femina' - click on photos

Whole plant

extremely poisonous

Juniperus sabina 'Mas' - photo

Whole plant

extremely poisonous

Juniperus sabina 'Rockery Gem' - click on photo

Whole plant

extremely poisonous

Juniperus sabina 'Tamariscifolia' - photo

Whole plant

extremely poisonous

Juniperus virginiana - click on thumbnail photos

Whole plant

extremely poisonous

Juniperus virginiana 'Canaertii' - click on photos

Whole plant

extremely poisonous

Juniperus virginiana 'Glauca' - photo

Whole plant

extremely poisonous

Juniperus virginiana 'Grey Owl' - photo

Whole plant

extremely poisonous

Kalmia angustifolia 'Rubra' (cattle, goats, sheep, humans) - click on photos

Whole Plant

poisonous

Kalmia latifolia - click on thumbnail photos

Whole Plant

poisonous

Kalmia latifolia 'Elf' - photo

Whole Plant

poisonous

Kalmia latifolia 'Heart of Fire' - click thumbnails

Whole Plant

poisonous

Kalmia latifolia 'Heart's Desire' - photo from European Kalmia Society

Whole Plant

poisonous

Kalmia latifolia 'Nipmuk' - click on photos

Whole Plant

poisonous

Kalmia latifolia 'Olympic Fire' - click on photos

Whole Plant

poisonous

Kalmia latifolia 'Ostbo Red' - click on photos

Whole Plant

poisonous

Kalmia latifolia 'Pink Surprise' - photo from European Kalmia Society

Whole Plant

poisonous

Kalmia latifolia 'Pinwheel' - photo

Whole Plant

poisonous

Kalmia latifolia 'Quinnipiac' - photo from European Kalmia Society

Whole Plant

poisonous

Kalmia latifolia 'Richard Jaynes' - photo

Whole Plant

poisonous

Laburnum anagyroides (cattle, dogs, horses, humans, swine) - photos
Laburnum seeds cause violent emetic. Seeds contain 1.8-3% of cytisine, a highly poisonous alkaloid.

Whole plant

extremely poisonous

Laburnum wateri 'Vossii' - click on photos

Whole plant

extremely poisonous

Ledum palustre - click on photo

Whole plant

poisonous

Ligustrum delavayanum - click on photos

Whole plant

poisonous

Ligustrum japonicum - click on thumbnail photo

Whole plant

poisonous

Ligustrum obtusifolium regelianum - click on thumbnail photos

Whole plant

poisonous

Ligustrum ovalifolium - click on photo

Whole plant

poisonous

Ligustrum ovalifolium 'Aureum' - photo

Whole plant

poisonous

Ligustrum vulgare (children) - click on thumbnail photos
Ligustrum vulgare has tannic acid in its bark.

Whole plant

poisonous

Ligustrum vulgare 'Atrovirens' (children) - click on photos

Whole plant

poisonous

Ligustrum vulgare 'Lodense' (children) - click on photos

Whole plant

poisonous

Liriodendron tulipifera - click on thumbnail photos

Whole plant

poisonous

Liriodendron tulipifera 'Fastigiatum' - click on thumbnails

Whole plant

poisonous

Lonicera - click on photos

berries

slightly poisonous

Lonicera brownii 'Dropmore Scarlet' - click on photos

berries

slightly poisonous

Lonicera caerulea - photo

berries

slightly poisonous

Lonicera caprifolium - click on photos

berries

slightly poisonous

Lonicera heckrottii - click on thumbnail photos

berries

slightly poisonous

Lonicera heckrottii 'Gold Flame' - photo

berries

slightly poisonous

Lonicera henryii - photo

berries

slightly poisonous

Lonicera japonica 'Aureoreticulata' - photo

berries

slightly poisonous

Lonicera japonica 'Halliana' - photo

berries

slightly poisonous

Lonicera japonica repens - click on photo

berries

slightly poisonous

Lonicera korolkowii zabelii - photos

berries

slightly poisonous

Lonicera ledebourii - click on photos

berries

slightly poisonous

Lonicera maackii - click on thumbnail photos

berries

slightly poisonous

Lonicera nitida 'Elegant' - click on photo

berries

slightly poisonous

Lonicera nitida 'Maigrun' - click on photos

berries

slightly poisonous

Lonicera periclymenum - click on thumbnail photos
Berries and leaf are acrid and bitter, since they contain a glucoside. Strongly emetic; makes mouth sore.

berries

slightly poisonous

Lonicera pileata - click on photos

berries

slightly poisonous

Lonicera tatarica - click on thumbnail photos

berries

slightly poisonous

Lonicera tellmanniana - photo

berries

slightly poisonous

Lonicera xylosteoides 'Clavey's Dwarf' - click on photo

berries

slightly poisonous

Lonicera xylosteum - click on thumbnail photos

berries

slightly poisonous

Lycium barbarum - click on photos and diagram and view photos in https://commons.wikimedia.org/wiki/Lycium_barbarum

Whole plant

very poisonous

Mahonia aquifolium - click on thumbnail photos

Whole plant

poisonous

Microbiota decussata - click on thumbnail photos

Whole plant

poisonous

Myrica gale - photos

Whole plant

poisonous

Pachysandra terminalis - click on thumbnail photos

Whole plant

poisonous

Paeonia suffruticosa - click on photos

Whole plant

poisonous

Paeonia suffruticosa 'Baronne d'Ales' - click on photos

Whole plant

poisonous

Paeonia suffruticosa 'Beaute de Twicket' - click on photos

Whole plant

poisonous

Paeonia suffruticosa 'Blanche de His' - scroll down page to photo

Whole plant

poisonous

Paeonia suffruticosa 'Jeanne d'Arc' - scroll down page to photo

Whole plant

poisonous

Paeonia suffruticosa 'Louise Mouchelet'

Whole plant

poisonous

Paeonia suffruticosa 'Madame Laffay'

Whole plant

poisonous

Paeonia suffruticosa 'Madame Stuart Low'

Whole plant

poisonous

Paeonia suffruticosa 'Reine Elisabeth' - scroll down page to photo

Whole plant

poisonous

Paeonia suffruticosa 'Souvenir de Bucher'

Whole plant

poisonous

Pernettya mucronata - click on photos

Whole plant

poisonous

Pernettya mucronata 'Alba' - click on photos

Whole plant

poisonous

Pernettya mucronata 'Coccinea' - photo

Whole plant

poisonous

Pernettya mucronata 'Lilian' - photo

Whole plant

poisonous

Pernettya mucronata 'Purpurea' - photo

Whole plant

poisonous

Pernettya mucronata 'Rosea' - click on photos

Whole plant

poisonous

Phytolacca americana (cattle, sheep, humans, turkeys, swine, horses) - photos and view photos in https://commons.wikimedia.org/wiki/Phytolacca_americana

berries

very poisonous

Pieris floribunda - click on thumbnail photos and view photos in https://commons.wikimedia.org/wiki/Pieris_floribunda

Whole plant

poisonous

Pieris japonica - click on thumbnail photos and view photos in https://commons.wikimedia.org/wiki/Pieris_japonica

Whole plant

poisonous

Pieris japonica 'Debutante' - photo

Whole plant

poisonous

Pieris japonica 'Forest Flame' - photo

Whole plant

poisonous

Pieris japonica 'Purity' - photo

Whole plant

poisonous

Pieris japonica 'Red Mill' - click on photos

Whole plant

poisonous

Pieris japonica 'Valley Valentine' - photo

Whole plant

poisonous

Pieris japonica 'Variegata' - click on photos

Whole plant

poisonous

Pieris japonica 'White Cascade' - photos

Whole plant

poisonous

Pieris japonica 'White Pearl' - photo

Whole plant

poisonous

Prunus laurocerasus (horses, cattle, moose, sheep, swine, goats) - click on thumbnail photos
Prunus laurocerasus contains prussic acid (Hydrogen cyanide), split off from amygdalin. Moth collectors know that laurel leaves put in a bottle will kill moths merely by their presence.

Whole plant

poisonous

Prunus laurocerasus 'Caucasica' (horses, cattle, moose, sheep, swine, goats) - click on photos

seeds, leaves

poisonous

Prunus laurocerasus 'Cherry Brandy' (horses, cattle, moose, sheep, swine, goats) - click on photos

Whole plant

poisonous

Prunus laurocerasus 'Herbergii' (horses, cattle, moose, sheep, swine, goats) - photo

Whole plant

poisonous

Prunus laurocerasus 'Mano' (horses, cattle, moose, sheep, swine, goats) - photo

seeds, leaves

poisonous

Prunus laurocerasus 'Mount Vernon' (horses, cattle, moose, sheep, swine, goats) - click on photos

seeds, leaves

poisonous

Prunus laurocerasus 'Otto Luyken' (horses, cattle, moose, sheep, swine, goats) - click on photos

Whole plant

poisonous

Prunus laurocerasus 'Rotundifolia' (horses, cattle, moose, sheep, swine, goats) - click on photos

Whole plant

poisonous

Prunus laurocerasus 'Schipkaensis Macrophylla' (horses, cattle, moose, sheep, swine, goats) - click on photo

Whole plant

poisonous

Prunus laurocerasus 'Zabeliana' (horses, cattle, moose, sheep, swine, goats) - click on photos

Whole plant

poisonous

Prunus serotina (horses, cattle, moose, sheep, swine, goats) - click on thumbnail photos

Whole plant

poisonous

Rhamnus catharticus (humans) - click on thumbnal photos and view photos in https://commons.wikimedia.org/wiki/Rhamnus_cathartica

Whole plant

poisonous

Rhamnus frangula (cattle, children) - click on thumbnail photos

Whole plant

poisonous

Rhus glabra - click on thumbnail photos

milky sap

poisonous

Rhus typhina - click on thumbnail photos and view photos in https://commons.wikimedia.org/wiki/Rhus_typhina

milky sap

poisonous

Rhus typina 'Dissecta' - photos

milky sap

poisonous

Robinia 'Casque Rouge' - click on photos

Whole plant

very poisonous

Robinia hispida 'Macrophylla' - click on photos

Whole plant

very poisonous

Robinia pseudoacacia (horses, cattle, humans, poultry, sheep, goats) (children) - click on thumbnail photos

Whole plant

very poisonous

Robinia pseudoacacia 'Bessoniana' (horses, cattle, humans, poultry, sheep, goats) (children) - click on photos
Roots taste and smell like liquorice, but are a dangerous poison - Robine, poisonous proteid, 1.6%

Whole plant

very poisonous

Robinia pseudoacacia 'Frisia' (horses, cattle, humans, poultry, sheep, goats) (children) - photo

Whole plant

very poisonous

Robinia pseudoacacia 'Monophylla' (horses, cattle, humans, poultry, sheep, goats) (children) - photos

Whole plant

very poisonous

Robinia pseudoacacia 'Pyramidalis' (horses, cattle, humans, poultry, sheep, goats) (children) - click on photo

Whole plant

very poisonous

Robinia pseudoacacia 'Sandaudiga' (horses, cattle, humans, poultry, sheep, goats) (children)

Whole plant

very poisonous

Robinia pseudoacacia 'Semperflorens' (horses, cattle, humans, poultry, sheep, goats) (children) - click on photo

Whole plant

very poisonous

Robinia pseudoacacia 'Tortuosa' (horses, cattle, humans, poultry, sheep, goats) (children) - click on photos

Whole plant

very poisonous

Robinia pseudoacacia 'Umbraculifera' (horses, cattle, humans, poultry, sheep, goats) (children) - click on photos

Whole plant

very poisonous

Sambucus canadensis 'Aurea' (cattle, humans, goats) (children) - click on photo

Whole plant

slightly poisonous

Sambucus canadensis 'Maxima' (cattle, humans, goats) (children) - click on photo

Whole plant

slightly poisonous

Sambucus nigra (swine, cattle, turkeys, humans) - photo

Whole plant

slightly poisonous

Sambucus racemosa - click on thumbnail photos and view photos in https://commons.wikimedia.org/wiki/Sambucus_racemosa

Whole plant

slightly poisonous

Skimmia japonica - photo

Whole plant

slightly poisonous

Skimmia japonica 'Rubella' - photos

Whole plant

slightly poisonous

Sophora japonica - click on thumbnail photos

Whole plant

very poisonous

Sophora japonica 'Pendula' - click on photos

Whole plant

very poisonous

Sophora japonica 'Regent' - click on photos

Whole plant

very poisonous

Symphoricarpos - photo

berries

slightly poisonous

Symphoricarpos albus laevigatus (children) - click on photos

berries

slightly poisonous

Symphoricarpos albus laevigatus 'White Hedge' (children) - click on photos

berries

slightly poisonous

Symphoricarpos chenaultii - click on photos

berries

slightly poisonous

Symphoricarpos chenaultii 'Hancock' - click on photos

berries

slightly poisonous

Symphoricarpos doorenbosii 'Magic Berry' - click on photos

berries

slightly poisonous

Symphoricarpos orbiculatus - photo

berries

slightly poisonous

Taxus baccata (cattle, horses, humans, all animals) - click on thumbnail photos
Taxus baccata leaves and seeds contain an alkaloid called Taxine, which acts as a cardiac depressant, interferes with respiration. Death occurs from suffocation. Fatal to men and animals. It was used as a vermifuge until it was found to kill the patient as well as the worms!

seeds, whole plant

extremely poisonous

Taxus baccata 'Aureovariegata' (cattle, horses, humans, all animals) - photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Dovastoniana' (cattle, horses, humans, all animals) - click on photos

seeds, whole plant

extremely poisonous

Taxus baccata 'Dovastonii Aurea' (cattle, horses, humans, all animals) - click on photos

seeds, whole plant

extremely poisonous

Taxus baccata 'Fastigiata' (cattle, horses, humans, all animals) - photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Fastigiata Aureomarginata' (cattle, horses, humans, all animals) - click on photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Fastigiata Robusta' (cattle, horses, humans, all animals) - click on photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Nissens Corona' (cattle, horses, humans, all animals) - click on images

seeds, whole plant

extremely poisonous

Taxus baccata 'Nissens President' (cattle, horses, humans, all animals) - photos

seeds, whole plant

extremely poisonous

Taxus baccata 'Overeynderi' (cattle, horses, humans, all animals) - photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Repandens' (cattle, horses, humans, all animals) - photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Semperaurea' (cattle, horses, humans, all animals) - click on photos

seeds, whole plant

extremely poisonous

Taxus baccata 'Summergold' (cattle, horses, humans, all animals) - photo

seeds, whole plant

extremely poisonous

Taxus baccata 'Washingtonii' (cattle, horses, humans, all animals) - click on thumbnails

seeds, whole plant

extremely poisonous

Taxus cuspidata 'Nana' (affects all species) - click on photos

seeds, whole plant

extremely poisonous

Taxus media - click on thumbnail photos

poisondartfrog

seeds, whole plant

extremely poisonous

Taxus media 'Brownii' - click on photo

seeds, whole plant

extremely poisonous

Taxus media 'Farmen' - photo

seeds, whole plant

extremely poisonous

Taxus media 'Hicksii' - photo

seeds, whole plant

extremely poisonous

Taxus media 'Hillii' - photo

seeds, whole plant

extremely poisonous

Thuja occidentalis - click on thumbnail photos

Whole plant

extremely poisonous

Thuja occidentalis 'Columna' - photo

Poison Dart Frog being looked up at by brassed-off Tree frog

Whole plant

extremely poisonous

Thuja occidentalis 'Smaragd' - photo

treefrog

Whole plant

extremely poisonous

Thuja plicata 'Aurescens' - click on thumbnail

Whole plant

extremely poisonous

Thuja plicata 'Excelsa' - see video

Whole plant

extremely poisonous

Ulex europaeus - diagram and click on photos

Whole plant

very poisonous

Viburnum - click on photos

berries

poisonous

Viburnum 'Pragense' - click on photos

berries

poisonous

Viburnum bodnantense 'Dawn' - photo

berries

poisonous

Viburnum burkwoodii - photo

berries

poisonous

Viburnum carlcephalum - photo

berries

poisonous

Viburnum carlesii - click on thumbnail photos

berries

poisonous

Viburnum carlesii 'Aurora' - photo

berries

poisonous

Viburnum davidii - photo

berries

poisonous

Viburnum farreri - photo

berries

poisonous

Viburnum lantana - click on thumbnail photos

berries

poisonous

Viburnum opulus (humans) - click on thumbnail photos

berries

poisonous

Viburnum opulus 'Roseum' (humans) - click on photos

berries

poisonous

Viburnum plicatum - click on thumbnail photos

berries

poisonous

Viburnum plicatum 'Mariesii' - photo

berries

poisonous

Viburnum plicatum 'Watanabe' - click on photos

berries

poisonous

Viburnum plicatum tomentosum - click on thumbnail photos

berries

poisonous

Viburnum rhytidophyllum - click on thumbnail photos

berries

poisonous

Viburnum tinus - photo

berries

poisonous

Vinca major - click on photos

Whole plant

poisonous

Vinca minor - click on thumbnail photos

Whole plant

poisonous

Vinca minor 'Alba' - photo

Whole plant

poisonous

Wisteria floribunda (humans) (children) - click on thumbnail photos

Whole plant

poisonous

Wisteria sinensis (humans) - click on photo and view photos in https://commons.wikimedia.org/wiki/Wisteria_sinensis

Whole plant

poisonous

A Guide To The Poisonous Plants And Weed Seeds Of Canada And The Northern United States by Robert Boyd Thomson, H. B. Sifton. University of Toronto Press, Published 1922.

The primary reason for this publication is the long-felt need of a text-book to accompany the course on poisonous plants which is given the students of the Ontario Veterinary College. This object has been kept constantly in mind. It has necessitated the preparation of a book at a price within the reach of every student, and yet one that contains in easily available form an up-to-date knowledge of our common poisonous plants, the characteristics by which they may be recognized, the symptoms produced by them and the remedial treatment required. It is hoped that the book will also prove useful to the veterinarian who is in practice, the farmer, the stockman and, to a more limited extent, the medical practitioner and the public generally.

 

Poisonous Plants of Pakistan by Abid Askari will be published in August 2010 about 158 poisonous plants. The author has collected, in one volume, information about the poisonous plants that can be found in Pakistan, which previously could only be found in scattered, specialized scientific papers. Detailed descriptions of the plants and how to avoid injury from them are accompanied by the authors own accurate illustrations which highlight the poisonous parts of each plant. There is also useful information on how to recognise the symptoms of poisoning and provide first aid.

 

Poisonous Plants of North Carolina website by:-
"Dr. Alice B. Russell, Department of Horticultural Science; In collaboration with: Dr. James W. Hardin, Department of Botany; Dr. Larry Grand, Department of Plant Pathology; and Dr. Angela Fraser, Department of Family and Consumer Sciences; North Carolina Cooperative Extension Service, North Carolina State University.
Disclaimer-- The list of poisonous plants on this web site does not necessarily include every poisonous plant that is known, or that might be found in an urban landscape or home. North Carolina State University does not advise eating any of the plants included in this web site. The information concerning edibility is taken from the literature, and the degree of reliability is unknown. We discourage the use of any of these plants for self medication. In cases of accidental exposure or ingestion, contact the Poison Control Center 1-800-222-1222."

with Other Links of Interest:
Cornell University Poisonous Plants PageCanadian Poisonous Plants Information System
other Poisonous Plants websites.

Plants toxic to Horses
Plants toxic to Cats
Plants toxic to Dogs
Plants toxic to Donkeys
UK Wildflowers toxic to humans and animals
Plants toxic to Chickens
Indoor/Outdoor Plants toxic to Babies
Plants toxic in School Grounds to Children
Plants toxic to Guinea pigs.
Plants potentially harmful to people.

 

See Poisonous Cultivated and UK Wildflower Plants with Photos Page for combination of

Site design and content copyright ©December 2006. Page structure changed September 2012. Height x Spread in feet changed to Height x Spread in inches (cms) June 2015. Chris Garnons-Williams. Page Structure amended September 2012. Photo links added August 2013. Poisonous Wildflower plants added September 2016

DISCLAIMER: Links to external sites are provided as a courtesy to visitors. Ivydene Horticultural Services are not responsible for the content and/or quality of external web sites linked from this site.  

Topic
Case Studies
Companion Planting
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Plants *

Soil
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Topic - Plant Photo Galleries
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Soft Fruit
Top Fruit
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Topic - Wildlife on Plant Photo Gallery
Butterfly

.

PLANTS PAGE
MENU

Introduction
Site Map
 

PLANT USE
Plant Selection
Level 1

Attracts Bird/Butterfly
Photos - Butterfly

Bee Pollinated Plants for Hay Fever Sufferers
Photos -
Bloom per Month

Groundcover Height
0-24 inches
(0-60 cms)

24-72 inches
(60-180 cms)

Above 72 inches
(180 cms)

 

Poisonous Cultivated and UK Wildflower Plants with Photos
or
Cultivated Poisonous Plants

or
Wildflower Poisonous Plants


Rabbit-Resistant Plant
Flower Arranging
Wildflower
Photos - Wildflowers

 


PLANTS FOR SOIL
Plant Selection
Level 2

Info - Any Soil
Plants - Any Soil A-F
Plants - Any Soil G-L
Plants - Any Soil M-R
Plants - Any Soil S-Z

Info
- Chalky Soil
Plants - Chalky Soil A-F
Plants - Chalky Soil G-L
Plants - Chalky Soil M-R
Plants - Chalky Soil S-Z

Info - Clay Soil
Plants - Clay Soil A-F
Plants - Clay Soil G-L
Plants - Clay Soil M-R
Plants - Clay Soil S-Z

Info - Lime-Free Soil
Plants -
Lime-Free Soil A-F
Plants -
Lime-Free Soil G-L
Plants -
Lime-Free Soil M-R
Plants -
Lime-Free Soil S-Z

Info - Sandy Soil
Plants -
Sandy Soil A-F
Plants -
Sandy Soil G-L
Plants -
Sandy Soil M-R
Plants -
Sandy Soil S-Z

Info - Peaty Soils
Plants -
Peaty Soil A-F
Plants -
Peaty Soil G-L
Plants -
Peaty Soil M-R
Plants -
Peaty Soil S-Z

Following parts of Level 2a,
Level 2b,
Level 2c and
Level 2d are included in separate columns
together with

Acid Soil,
Alkaline Soil,
Any Soil,
Height and Spread,
Flowering Months and
Flower Colour in their Columns,
and also

Companion Plants to aid this plant Page,
Alpine Plant for Rock Garden Index Page
Native to UK WildFlower Plant in its Family Page in this website

and/or
Level 2cc
in the Comment Column
within each
of the Soil Type Pages of
Level 2

PLANTS PAGE MENU

 


Plant Selection by Plant Requirements
Level 2a

Sun aspect, Moisture


Plant Selection by Form
Level 2b

Tree Growth Shape
Shrub/Perennial Growth Habit


Plant Selection by Garden Use
Level 2c

Bedding
Photos - Bedding
Bog Garden
Coastal Conditions
Containers in Garden
Front of Border
Hanging Basket
Hedge
Photos - Hedging
Pollution Barrier
Rest of Border
Rock Garden
Photos - Rock Garden
Thorny Hedge
Windbreak
Woodland


Plant Selection by Garden Use
Level 2cc Others

Aquatic
Back of Shady Border
Crevice Garden
Desert Garden
Raised Bed
Scree Bed
Specimen Plant
Trees for Lawns
Trees for Small Garden
Wildflower
Photos - Wildflowers


Plant Selection by Plant Type
Level 2d

Alpine
Photos - Evergr Per
Photos - Herbac Per
Photos - RHS Herbac
Photos - Rock Garden
Annual
Bamboo
Photos - Bamboo
Biennial

Bulb
Photos - Bulb
Climber
Photos - Climber
Conifer
Deciduous Rhizome
Deciduous Shrub
Photos - Decid Shrub
Evergreen Perennial
Photos - Evergr Per
Evergreen Shrub
Photos - Evergr Shrub
Fern
Photos - Fern
Fruit Plant
Grass
Herb
Herbaceous Perennial
Photos - Herbac Per
Remaining Top Fruit
Soft Fruit
Sub-Shrub
Top Fruit
Tuber
Vegetable
Photos - Vegetable

 

 

 

 

Website Structure Explanation and User Guidelines

PLANTS PAGE MENU

 


REFINING SELECTION
Plant Selection by
Flower Colour
Level 3a

Blue Flowers
Photos - Bedding
Photos - Bulb
Photos - Climber
Photos - Evergr Per
Photos - Evergr Shrub
Photos - Wild Flower

Orange Flowers
Photos - Bedding
Photos - Wild Flower

Other Colour Flowers
Photos - Bedding
Photos - Bulb
Photos - Climber
Photos - Evergr Per
Photos - Evergr Shrub
Photos - Wild Flower

Red Flowers
Photos - Bedding
Photos - Bulb
Photos - Climber
Photos - Decid Shrub
Photos - Evergr Per
Photos - Evergr Shrub
Photos - Herbac Per
Photos - Rose
Photos - Wild Flower

White Flowers
Photos - Bedding
Photos - Bulb
Photos - Climber
Photos - Decid Shrub
Photos - Decid Tree
Photos - Evergr Per
Photos - Evergr Shrub
Photos - Herbac Per
Photos - Rose
Photos - Wild Flower

Yellow Flowers
Photos - Bedding
Photos - Bulb
Photos - Climber
Photos - Decid Shrub
Photos - Evergr Per
Photos - Evergr Shrub
Photos - Herbac Per
Photos - Rose
Photos - Wild Flower


Photos - 53 Colours in its Colour Wheel Gallery

Photos - 12 Flower Colours per Month in its Bloom Colour Wheel Gallery


Plant Selection by Flower Shape
Level 3b

Photos - Bedding
Photos - Evergr Per
Photos - Herbac Per


Plant Selection by Foliage Colour
Level 3c

Aromatic Foliage
Finely Cut Leaves
Large Leaves
Other
Non-Green Foliage 1
Non-Green Foliage 2
Sword-shaped Leaves

 


PRUNING
Plant Selection by Pruning Requirements
Level 4

Pruning Plants

 


GROUNDCOVER PLANT DETAIL
Plant Selection
Level 5

Plant Name - A
Plant Name - B
Plant Name - C
Plant Name - D
Plant Name - E
Plant Name - F
Plant Name - G
Plant Name - H
Plant Name - I
Plant Name - J
Plant Name - K
Plant Name - L
Plant Name - M
Plant Name - N
Plant Name - O
Plant Name - P
Plant Name - Q
Plant Name - R
Plant Name - S
Plant Name - T
Plant Name - U
Plant Name - V
Plant Name - W
Plant Name - XYZ

 


Then, finally use
COMPANION PLANTING to

aid your plant selected or to
deter Pests
Plant Selection
Level 6

 

To locate mail-order nursery for plants from the UK in this gallery try using search in RHS Find a Plant.

To locate plants in the European Union (EU) try using Search Term in Gardens4You and Meilland Richardier in France.

To locate mail-order nursery for plants from America in this gallery try using search in Plant Lust.

To locate plant information in Australia try using Plant Finder in Gardening Australia.

 

Ivydene Gardens Wild Flower Gallery:
Wild Flowers Poisonous Plants

"The Symbol P denotes a plant poisonous in greater or less degree to man in one or more of its parts at one or more seasons" from The Pocket Guide to Wild Flowers by David McClintock and R.S.R Fitter assisted by Francis Rose. Eleventh Impression 1978. (ISBN 0 00 219363 9). The plants with the Symbol P at the end of the line with their name on it in that book are shown in the following list.

Flora of the British Isles by A.R. Clapham, T.G. Tutin and E.F. Warburg. Cambridge at the University Press 1952. This book details the poisonous parts and toxicity of those poisonous plants native to the UK.

The Poison Garden website originated from John Robertson's role as the first Poison Garden Warden at the Alnwick Garden.

All the plants in this linked list are poisonous to animals.

Is your home poisoning you and your pet?

Plants, household items and foods poisonous to dogs.

Plants that are toxic to cats.

Plants that are poisonous to horses:-

High Risk: 

Black Nightshade, Box, Bracken, Cowbane, Cuckoo Pint, Deadly Nightshade, Foxglove, Hellebore, Hemlock, Hemlock Water-Dropwort, Henbane, Herb-Paris, Horsetail, Iris, Laburnum, Larkspur, Lily of the Valley, Linseed, Lupin, Meadow Saffron, Monkshood, Potato, Privet, Ragwort, Rhododendron, Yew.

Low Risk: 

Acorns, Alder Buckthorn, Black Bryony, Broom, Buckthorn, Buckwheat, Buttercup, Greater Celandine, Charlock, Cherry Laurel, Chickweed, Clover, Columbine, Corncockle, Darnel, Ground Ivy, Hemp Nettle, Horse Radish, Marsh Marigold, Melilot, Mercury, Oak, Pimpernel, Poppy, Rhubarb, Rush, St John's Wort, Sorrel, Spurge, Thorn Apple, White Bryony, Woody Nightshade.

Prevention is better than cure:

  • Pull out Ragwort and remove any acorns from paddocks.
  • Check paddock boundaries for evidence of poisonous plants, check in hedges and on the other side of the boundary to a distance a horse could reach.
  • Make sure that your boundaries are secure.
  • Break open hay bales and discard any plants that you cannot identify.

It is useful if your garden boundary is where horses could reach, that you avoid having any of the above plants in that area.

Direct link table for Poisonous to Humans Wild Flower Plants of Great Britain:-

Plant Family Name
linked to its Family Page

Plant Name
linked to its Plant Description Page and to photos in Wikimedia Commons

Poisonous Parts

Toxicity

 

A

 

 

Buckthorn

Alder Buckthorn (Frangula alnus)

Deze foto toont de stam van de gewone vuilboom of het sporkehout. Ik nam de foto op 2 maart 2006 in arboretum heempark in Delft. This picture shows the trunk of Rhamnus frangula. By TeunSpaans, via Wikimedia Commons
 

Purgative. Bark contains emetic fragularoside.

frangulacbarkalnuswikimediacommons

Poisonous

 

B

 

 

Buttercup

Baneberry (Actaea spicata)

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The rhizome of Actaea spicata was formerly officinal as Radix Christophorianae and was used against skin disease and asthma.

Very poisonous

Nightshade

Bittersweet (Solanum dulcamara)

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The poisons are the alkaloid solanine and the amorphous glucoside Dulcamarine. Solanine acts narcotically; in large doses it paralyses the central nervous system, without affecting the peripheral nerves or voluntary muscles. It slows the heart and respiration, lessens sensibility, lowers the temperature and causes vertigo and delirium, terminating in death with convulsions.
The berries have proved poisonous to a certain degree to children.

Very Poisonous

Yam

Black Bryony (Dioscorea communis, Tamus communis)

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The large, fleshy root high in starch is black on the outside, very acrid, and extremely poisonous. Literature usually states that 15 red berries could be fatal to a child.

Very Poisonous

Nightshade

Black Nightshade (Solanum nigrum)

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Like Bittersweet above, this plant contains the alkaloid solanine, which is very poisonous even in small amounts. It also contains atropine. These poisons produce the following symptoms:-

• Eyes, ears, nose, mouth, and throat
◦ Dry mouth
◦ Enlarged (dilated) pupils

• Gastrointestinal
◦ Diarrhea
◦ Stomach pain
◦ Vomiting

• Heart and blood
◦ Pulse - slow or rapid
◦ Shock

• Lungs
◦ Slowed breathing

• Nervous system
◦ Delirium
◦ Fever
◦ Hallucinations
◦ Headache
◦ Loss of sensation
◦ Paralysis

• Whole body
◦ Sweating

Very poisonous

Buttercup

Buttercup Family (Ranunculus species):-

Adderstongue Spearwort (Ranunculus ophioglossifolius)
Bulbous Buttercup (Ranunculus bulbosus)
Celery-leaved Buttercup (Ranunculus sceleratus)
Corn Buttercup (Ranunculus arvensis)
Creeping Buttercup (Ranunculus repens)
Creeping Spearwort (Ranunculus reptans)
Greater Spearwort (Ranunculus lingua)
Hairy Buttercup (Ranunculus sardous)
Ivy-leaved Crowfoot (Ranunculus hederceus)
Jersey Buttercup (Ranunculus flabellatus)
Lesser Celandine (Ranunculus ficaria)
Lesser Spearwort (Ranunculus flammula)
Meadow Buttercup (Ranunculus acris)
Scilly Buttercup (Ranunculus muricatus)
Small-flowered Buttercup (Ranunculus parviflorus)
Thread-leaved Crowfoot (Ranunculus trichophyllus)
Various-leaved Crowfoot (Ranunculus heterophyllus)
Water Crowfoot (Ranunculus aquatilis)
Wood Goldilocks (Ranunculus auricomus)

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All Ranunculus species are acrid, poisonous and are dangerous to cattle, but are ordinarily avoided by all grazing animals. The poisonous constituent is probably anemonin.

Poisonous

 

C

 

 

Buttercup

Columbine (Aquilegia vulgaris)

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Its seeds and roots contain cardiogenic toxins, which cause both severe gastroenteritis and heart palpitations if consumed as food. Native Americans used very small amounts of Aquilegia root as an effective treatment for ulcers. Columbine poisonings may be fatal.

Highly Poisonous

Buckthorn

Common Buckthorn (Rhamnus cathartica)

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Bark is a skin irritant. Berries are a strong laxative (purgative) and can also irritate the skin.

Poisonous

Umbellifer

Cowbane (Cicuta virosa)

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The plant contains cicutoxin, which disrupts the workings of the central nervous system. In humans, cicutoxin rapidly produces symptoms of nausea, emesis and abdominal pain, typically within 60 minutes of ingestion. Poisoning can lead to tremors and seizures. A single bite of the root (which has the highest concentration of cicutoxin) can be sufficient to cause death. One gram of water hemlock per kilogram of weight will kill a sheep and 230 grams is sufficient to kill a horse. Due to the rapid onset of symptoms, treatment is usually unsuccessful.

Highly Poisonous

 

D

 

 

Nightshade

Deadly Nightshade (Atropa bella-donna)

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Belladonna is one of the most toxic plants found in the Western hemisphere. All parts of the plant contain tropane alkaloids. The berries pose the greatest danger to children because they look attractive and have a somewhat sweet taste. The consumption of two to five berries by children and ten to twenty berries by adults can be lethal. The root of the plant is generally the most toxic part, though this can vary from one specimen to another. Ingestion of a single leaf of the plant can be fatal to an adult.

The active agents in Belladonna, atropine, hyoscine (scopolamine), and hyoscyamine, have anticholinergic properties. The symptoms of belladonna poisoning include:-
dilated pupils, sensitivity to light, blurred vision, tachycardia, loss of balance, staggering, headache, rash, flushing, dry mouth and throat, slurred speech, urinary retention, constipation, confusion, hallucinations, delirium, and convulsions.
In 2009, atropa belladonna that was mistaken for blueberries with six berries ingested by an adult woman was documented to result in severe anticholinergic syndrome. The plant's deadly symptoms are caused by atropine's disruption of the parasympathetic nervous system's ability to regulate non-volitional/subconscious activities such as sweating, breathing, and heart rate. The antidote for belladonna poisoning is physostigmine or pilocarpine, the same as for atropine.

Lethal

Spurge

Dog's Mercury (Mercurialis perennis)
Annual Mercury (Mercurialis annua)

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Dog's mercury is highly poisonous. Methylamine (mercurialine) and trimethylamine are thought to be present, together with a volatile oil and saponins. Symptoms of poisoning appear within a few hours; they can include vomiting, pain, gastric and kidney inflammation, and sometimes inflammation of the cheeks and jaw, and drowsiness. Apart from Chenopodium bonus-henricus and some other edible members of the Chenopodiaceae (also known as mercuries), the most similar-looking species is probably Mercurialis annua (annual mercury), which is also thought to be poisonous.

Highly Poisonous

 

E

 

 

Spurge

Euphorbia Family:-

Broad Spurge (Euphorbia platyphyllos)
Caper Spurge (Euphorbia lathyrus)
Cypress Spurge (Euphorbia cyparissias)
Dwarf Spurge (Euphorbia exigua)
Hungarian Spurge (Euphorbia esula)
Irish Spurge (Euphorbia hyberna)
Petty Spurge (Euphorbia peplus)
Portland Spurge (Euphorbia portlandica)
Purple Spurge (Euphorbia peplis)
Sea Spurge (Euphorbia paralias)
Sun Spurge (Euphorbia heliocopia)
Tiatern Spurge (Euphorbia stricta)
Wood Spurge (Euphorbia amygdaloides)

 

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The latex (milky sap) of spurges acts as a deterrent for herbivores as well as a wound healer. As it is under pressure, it runs out from the slightest wound and congeals within a few minutes of contact with the air. Among the component parts are many di- or tri-terpen esters, which can vary in composition according to species, and in some cases the variant may be typical of that species. The terpen ester composition determines how caustic and irritating to the skin it is. In contact with mucous membranes (eyes, nose, mouth) the latex can produce extremely painful inflammation. In experiments with animals it was found that the terpen ester resiniferatoxin had an irritating effect 10,000 to 100,000 times stronger than capsaicin, the "hot" substance found in chili peppers. Several terpen esters are also known to be carcinogenic.

Therefore spurges should be handled with caution. Latex coming in contact with the skin should be washed off immediately and thoroughly. Partially or completely congealed latex is often no longer soluble in water, but can be removed with an emulsion (milk, hand-cream). A physician should be consulted regarding any inflammation of a mucous membrane, especially the eyes, as severe eye damage including possible permanent blindness may result from acute exposure to the sap. It has been noticed, when cutting large succulent spurges in a greenhouse, that vapours from the latex spread and can cause severe irritation to the eyes and air passages several metres away. Precautions, including sufficient ventilation, are required. Small children and domestic pets should be kept from contact with spurges.

Poisonous

 

F

 

 

Umbellifer

Fool's Parsley (Aethusa cynapium)

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Usually contains coniine and is consequently poisonous. It is related to Hemlock and Water-dropwort, and like them, is poisonous, though less so than Hemlock. Poisoning from Fool's Parsley showed symptoms of heat in the mouth and throat and a post-mortem examination showed redness of the lining membrane of the gullet and windpipe and slight congestion of the duodenum and stomach. Since some toxins are destroyed by drying, hay containing the plant is not poisonous.

Poisonous

Figwort - mulleins

Foxglove (Digitalis purpurea)

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Due to the presence of the cardiac glycoside digitoxin, the leaves, flowers and seeds of this plant are all poisonous to humans and some animals, and can be fatal if eaten.
The main toxins in Digitalis are the two chemically similar cardiac glycosides: digitoxin and digoxin. Like other cardiac glycosides, the Digitalis toxins exert their effects by inhibiting the ATPase activity of a complex of transmembrane proteins that form the sodium potassium ATPase pump, (Na+/K+-ATPase). Inhibition of the Na+/K+-ATPase in turn causes a rise not only in intracellular Na+, but also in calcium, which in turn results in increased force of myocardial muscle contractions. In other words, at precisely the right dosage, Digitalis toxin can cause the heart to beat more strongly. However, digitoxin, digoxin and several other cardiac glycosides, such as ouabain, are known to have steep dose-response curves, i.e. minute increases in the dosage of these drugs can make the difference between an ineffective dose and a fatal one.

Symptoms of Digitalis poisoning include a low pulse rate, nausea, vomiting, and uncoordinated contractions of different parts of the heart leading to cardiac arrest and finally death.

Fatal

 

G

Wikipedia.org provides a great deal of information about the poison chemicals in the plants detailed in this page.

 

 

 

 

 

 

H

 

 

Umbellifer

Hemlock (Conium maculatum)

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All plant parts are poisonous. Conium contains the piperidine alkaloids coniine, N-methylconiine, conhydrine, pseudoconhydrine and γ-coniceine (or g-coniceïne), which is the precursor of the other hemlock alkaloids. The most important and toxic of these is coniine, which has a chemical structure similar to nicotine. Coniine is a neurotoxin, which disrupts the workings of the central nervous system and is toxic to humans and all classes of livestock. Ingestion in any quantity can result in respiratory collapse and death. Coniine causes death by blocking the neuromuscular junction in a manner similar to curare; this results in an ascending muscular paralysis with eventual paralysis of the respiratory muscles which results in death due to lack of oxygen to the heart and brain. Death can easily be prevented by artificial ventilation until the effects have worn off 48–72 hours later. For an adult the ingestion of more than 100 mg of coniine (approximately 6 to 8 fresh leaves, or a smaller dose of the seeds or root) may result in fatality.

Very poisonous

Nightshade

Henbane (Hyoscyamus niger)

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0.03-0.15% tropane alkaloids (hyoscyamine, hyoscine = scopolamine), flavonol glycosides (quercitin, rutin, kaempferol), small amounts of volatile amines (choline, methylpyrroline, pyridine). have been found in the foliage and seeds of the plant. Common effects of henbane ingestion in humans include hallucinations, dilated pupils, restlessness, and flushed skin. Less common symptoms such as tachycardia, convulsions, vomiting, hypertension, hyperpyrexia and ataxia have all been noted.
Henbane can be toxic, even fatal, to animals in low doses.
Children have been poisoned by eating the seeds.

Very poisonous

 

I

 

 

Ivy

Ivy (Hedera helix)

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Fruit is poisonous. Sap from leaves can cause severe contact dermatitis in some people.

Poisonous

 

J

 

 

 

 

 

 

 

K

 

 

 

 

 

 

 

L

 

 

Lily

Lily of the Valley (Convallaria majalis)

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All parts, including the berries, are highly poisonous. Roughly 38 different cardiac glycosides (cardenolides) have been found in the plant, some among others:

  • convallarin
  • convallamarin
  • convallatoxin
  • convallotoxoloside
  • convallosid
  • neoconvalloside
  • glucoconvalloside
  • majaloside
  • convallatoxon
  • corglycon
  • cannogenol-3-O-α-L-rhamnoside
  • cannogenol-3-O-β-D-allomethyloside
  • cannogenol-3-O-6-deoxy-β-D-allosido-β-D-glucoside,
  • cannogenol-3-O-6-deoxy-β-D-allosido-α-L-rhamnoside,
  • strophanthidin-3-O-6-deoxy-β-D-allosido-α-L-rhamnoside,
  • strophanthidin-3-O-6-deoxy-β-D-allosido-α-L-arabinoside,
  • strophanthidin-3-O-α-L-rhamnosido-2-β-D-glucoside,
  • sarmentogenin-3-O-6-deoxy-β-D-allosido-α-L-rhamnoside
  • sarmentogenin-3-O-6-deoxy-β-D-guloside
  • 19-hydroxy-sarmentogenin-3-O-α-L-rhamnoside,
  • 19-hydroxy-sarmentogenin
  • arabinosido-6-deoxyallose
  • lokundjoside

The plant also contains saponins.

If the plant is touched or handled, hands should be washed before doing anything else.

Highly poisonous

Arum

Lords and Ladies (Arum maculatum)

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It contains the same oxalates as found in Arum italicum. These needle-shaped crystals can irritate the skin, mouth, tongue, and throat, resulting in throat swelling, breathing difficulties, burning pain, and stomach upset.

Though the orange berries are quite attractive, their acrid taste and the tingling in the mouth which begins quite quickly, mean that large amounts are rarely ingested and serious harm is unusual.

The plant is said to be one of the most common causes of accidental plant poisoning based on attendance at hospital A & E departments though this may be because the irritation of the tongue and mouth is more likely to result in hospital attendance than a simple stomach upset from, say, eating a daffodil bulb thinking it to be an onion.

Poisonous

 

M

 

 

Lily: Garlic

Meadow Saffron (Colchicum autumnale)

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It is poisonous in all its parts which is due to the presence of the alkaloid colchicine. This molecule, the structure of which has been determined has the IUPAC name: N-((7S)-5,6,7,9-tetrahydro-1,2,3,10-tetramethoxy-9-oxobenzo(a)heptalen-7-yl)- acetamide

Poisonous

Daphne

Mezereon (Daphne mezereum)

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The fruit is a bright red berry. Daphnetoxin present in the berries and twigs is very poisonous for people, though fruit-eating birds like thrushes are immune and eat the berries, dispersing the seeds in their droppings. Handling the fresh twigs can cause rashes and eczema in sensitive individuals.

Very poisonous

Buttercup

Monkshood (Aconitum anglicum. Syn. Aconitum napellus)

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All species are highly poisonous and have often proved fatal owing to the presense of the powerful and deadly alkaloid aconitin and of other associated alkaloids. Aconitim napellus has long been officinal as a narcotic and analgesic.

Highly poisonous

 

N

 

 

 

 

 

 

 

O

 

 

 

 

 

 

 

P

 

 

Olive

Privet (ligustrum vulgare)

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The fruits of some species are mildly poisonous to humans.
Privet is one of several plants which are poisonous to horses.
Privet pollen is known to cause asthma and eczema in sufferers.
36% of respondents to a survey of gardeners in the UK said that that privet would put them off buying a property.

Mildly poisonous

 

Q

 

 

 

 

 

 

 

R

 

 

Iris

Roast-Beef Plant (Iris foetidissima)

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The rhizomes are toxic.

Poisonous

 

S

 

 

Spindletree

Spindle-Tree (Euonymus europaeus)

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Poisonous bright pink fruit, which is attractive to children, but is harmful, since it is strongly emetic and purgative: it has proved fatal to sheep. The bark, leaves and fruit are all injurious, and no animal but the goat will browse upon them

Poisonous

Daphne

Spurge-Laurel (Daphne laureola)

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All parts of the plant are poisonous to humans. Its poisonous black berries are eaten by birds. The sap is known to cause skin rashes on contact., so wear gloves against this caustic sap.

Poisonous

Buttercup

Stinking Hellebore (Helleborus foetidus)
Green Hellebore (Helleborus viridis)

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All the hellebores have a burning taste and are highly poisonous owing to the presence of the glycosides helleborin and helleborein. Both Helleborus viridis and Helleborus foetidus were formerly officinal as violent cathartics and emetics, but their use has long been discontinued.

Highly Poisonous

 

T

 

 

Nightshade

Thorn-Apple (Datura stramonium)

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Tropane alkaloids are autonomic nervous system blocking agents. The level of alkaloids in individual plants varies from day to day depending on environmental conditions and stages of plant development. This can lead to problems for people who use the plant as a narcotic as higher levels of these alkaloids can cause death instead of the intended "trip." 
To learn more about these alkaloids and the toxicity of Datura check out "Medical Botany: Plants Affecting Man's Health" by Walter H. Lewis, P.F. Elvin-Lewis (A Wiley-Interscience publication) (Paperback)

Very Poisonous

Umbellifer

Tubular Water Dropwort (Oenanthe fistulosa)
Hemlock Water Dropwort (Oenanthe crocata)
Fine-Leaved Water Dropwort (Oenanthe aquatica)

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The active poison is oenanthotoxin. The root is particularly dangerous, as it lacks the unpleasant flavour of the foliage, but is equally toxic: the species is common in wet ditches and streamsides, and the roots are often exposed when drainage ditches are cleared. Livestock fatalities are frequent when these exposed roots are found and eaten in mistake for parsnips, one root being sufficient to kill a cow. Human fatalities are also known in these circumstances (crushed to death by the cow!).

Extremely Poisonous

 

U

 

 

 

 

 

 

 

V

 

 

 

 

 

 

 

W

 

 

Melon

White Bryony (Bryonia dioica)

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Avoided by rabbits and common in warrens.
The acrid and cathartic properties of the milky juice in the root are shared in some measure by all parts of the plant: the berries are emetic and even poisonous.

Poisonous

 

X

 

 

 

 

 

 

 

Y

 

 

Yew

Yew (Taxus baccata)

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Most parts of the tree are toxic, except the bright red aril surrounding the seed, enabling ingestion and dispersal by birds. The major toxin is the alkaloid taxane. The foliage remains toxic even when wilted or dried. Horses have the lowest tolerance, with a lethal dose of 200–400 mg/kg body weight, but cattle, pigs, and other livestock are only slightly less vulnerable. Symptoms include staggering gait, muscle tremors, convulsions, collapse, difficulty breathing, coldness and eventually heart failure. However, death occurs so rapidly that many times the symptoms are missed. The wood remains poisonous after it is cut.

Fatal

 

Z

 

 

 

 

 

 

 

General Poison Remedies from The New illustrated Gardening Encyopedia by Richard Sudell - Published in 1950:-

For most plant poisons it is safe, while waiting for doctor's arrival, to give:

  • A drink of milk, which coagulates in the stomach and may take up poison in its clot.
  • An emetic, which should bring away milk and poison together.
  • A purge, such as 1 fluid ounce (30 millilitres) of castor-oil, which should clear out any remainder of poison.
  • Some strong tea - preferably boiled, as tannin is an antidote to many poisons; or another stimulant such as brandy or sal volatile (smelling salts).

Throughout, keep the patient warm, quiet, and with plenty of fresh air.
If patient seems sleepy, keep him/her awake as some poisons induce a "sleep of death".

Emetics:-

  • A dessertspoonful of mustard in a tumbler of lukewarm water.
  • A tablespoonful of salt in a tumbler of luke-warm water.
  • For a child - A teaspoonful of ipecacuanha wine repeated twice at intervals of 15 minutes.