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Poisonous Plants

We've done a lot of work to make the information here as accurate as we can, but if you find anything wrong or missing, please email us.

If you're not sure about a particular plant do try to check for yourself - preferably not by giving it a quick nibble and seeing what happens!

When seeking medical assistance as a result of poisoning always take a piece of the plant with you.  Do not attempt to make the victim vomit.

 

Names marked with an asterisk* mean that the plant's dangerous - possibly fatal in some cases. 

 

Plants are listed in alphabetical order of botanical name. If you want to find one by its common name, press Ctrl-F and you'll get a box that lets you search the page.

Click on any picture to see it full size.

 
 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 
 

 

Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
Abrus precatorius

Jequirity
Crab's eye
Rosary pea
'John Crow' bead
Precatory bean
Indian licorice
Akar saga
Giddee giddee
Jumbie bead

seeds

 

   
   
Acalypha

Chenille plant
Copperleaf

sap
 
 
Acokanthera oblongifolia

Poison arrow plant
Bushmen's poison

sap
 
 
Aconitum Monkshood all parts; toxin can be absorbed through the skin*
 
 
Actaea

Baneberry
Bugbane
Black snakeroot

all parts, especially berries*; toxin can be absorbed through the skin

 
 
Adenium obesum Desert rose sap
 
 
Aesculus hippocastanum Horse-chestnut all parts
 
 
Ageratina altissima White Snakeroot all parts*
 
 
Aglaonema Chinese evergreen all parts
   
   
Agrostemma githago Corncockle all parts
 
 
Allamanda

Yellow Bell
Golden Trumpet
Buttercup Flower

all parts
 
 
Allium Onions and garlic all parts poisonous to dogs & cats
 
 
Alocasia Taro all parts
 
 
Aloe Aloe sap of leaves

 
 
Amaryllis belladona

Belladonna lily
Naked lady

sap & bulb

 
 

Anabaena circinalis
Anacystis cynea

Blue-green algae (cyanobacteria) contaminated water
 
 
Anthurium

Flamingo flower
Boy flower

all parts
 
 
Apocynum spp.

Dogbane
Indian hemp

all parts
 
 
Arisaema Cobra-lily all parts
 
 
Arum

Cuckoo-pint
Lords-and-ladies

all parts
 
 

Asparagus
(except officinalis)

Asparagus fern berries
  
  
Atropa belladonna Deadly nightshade all parts, especially berries*

 
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

   
Brugmansia Angelís trumpet leaves, flowers & seeds

 
 
Brunfelsia

Yesterday, today and
 tomorrow
Lady of the night

all parts, especially berries & seeds
 
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
Caladium

Angelís wings
Elephant ear
Heart of Jesus

all parts
 
 
Calla palustris

Water arum
Bog arum
Marsh calla

all parts
 
 

Catheranthus Roseus
syn. Vinca rosea
syn. Lochnera rosea

Rosy periwinkle
Madagascar periwinkle
Cape periwinkle
Old-maid

all parts

 
 
Cerbera odollam

Suicide tree
Othalanga
Pong-pong

nut*

 
 
Chelidonium majus Greater celandine all parts, especially root*
 
 

Chrysanthemum X morifolium
syn. Dendranthema X grandiflorum

Chrysanthemum
Mum
Chrysanth

leaves, flowers
 
 
Cicuta sp.

Water hemlock
Cowbane
Poison parsnip

all parts, especially root*
 
 
Colchicum

Autumn crocus
Meadow saffron
Naked lady

all parts*
 
 
Colocasia esculenta

Taro
Dasheen
Arrowroot
Elephant ear

all parts when unprocessed

 
 
Conium maculatum

Hemlock
Poison hemlock

all parts*
 
 
Convallaria majalis Lily-of-the-valley all parts

 
 
Coriaria

Redoul
Deu
Huique

berries*
 
 
Cycadophyta Cycads unprocessed seeds
 
 
Cytisus Broom leaves, twigs, flowers, seeds

 

Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
Daphne mezereum

Daphne
Spurge laurel
Mezereon

all parts, especially berries*

 
 
Datura

Nightshade
Thorn-apple

all parts*

 
 
Datura stramonium

Datura
Jimson weed
Angel's trumpet
Devil's weed
Thorn-apple
Stinkweed
Jamestown weed
Moonflower
Tolguacha

all parts*

 
 

Delphinium
(including Consolida)

Larkspur all parts, especially young plants & seeds*

 
 
Dicentra cucullaria Dutchman's breeches foliage & roots poisonous

 
 
Dichapetalum cymosum

Gifblaar
Poison leaf

poisonous (livestock & associated predators)

 
 
Dieffenbachia

Dumb cane
Leopard lily

all parts
 
 
Digitalis Foxglove foliage, flowers & seeds*

 
 
Dracunculus

Dragon arum
Black arum
Voodoo lily
Snake lily
Stink lily
Black dragon
Dragonwort
Ragons
Drakondia

root when unprocessed
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Echium

Viper's bugloss
Patterson's curse
Tower of jewels

all parts

 
 
Epipremnum

Devilís ivy
Pothos
Silver vine
Money plant
Centipede tongavine
Solomon islands' ivy
Philodendron (error)

all parts
 
 
Erythrina herbacea

Coral tree
Coral bean
Cherokee bean
Red cardinal
Cardinal spear

all parts, mainly seeds
 
 
Euonymus

Spindle
Spindle tree

all parts

 

 
 

Euphorbia
(including E. pulcherrima)

Spurge
(including Poinsettia)

all parts

 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Fungi Mushrooms and 
toadstools
fruiting bodies of many
species, some*
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 

Gaultheria
(syn. Pernettya)

leaves, nectar, berries*
 
 
Gelsemium sempervirens

Yellow jessamine
Yellow jasmine
Carolina jessamine
Carolina jasmine
Evening trumpet flower
Gelsemium
Woodbine

all parts*
 
 
Gloriosa superba

Flame lily
Fire lily
Gloriosa lily
Glory lily
Superb lily
Climbing lily
Creeping lily

poisonous
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Hedera Ivy leaves and berries
 
 
Helleborus niger

Christmas rose
Black hellebore

all parts
 
 
Hippeastrum Amaryllis bulb
 
 
Hippomane mancinella

Manchineel
Manchioneel

all parts*
 
 
Homeria Cape tulips all parts
 
 
Hyacinthoides Bluebell all parts
 
 
Hyacinthus Hyacinth all parts
 
 
Hydrangea Hortensia all parts

 
 
Hyoscyamus

Henbane
Stinking nightshade

all parts*
 
 
Hypericum perforatum

St John's wort
Perforate St Johnís wort
Titton's weed
Klamath weed

poisonous to livestock

Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
  
Ilex aquifolium

Holly
European holly
Christmas holly
Mexican holly

berries
 
 
Ipomoea

Morning glory
Moonflower
Bindweed

seeds
 
 
Iris

Iris
Flag Iris

rhizome

 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 

Jacobaea vulgaris
syn. Senecio jacobaea

Ragwort poisonous to livestock

 
  
Juniperus sabina

Savin juniper
Savin

all parts
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Kalanchoe tubiflora

Mother of millions
Mother of thousands
Chandelier plant

poisonous to livestock
 
 
Kalmia

Mountain laurel
Calico bush
Spoonwood
Ivybush
Sheep laurel
Lambkill
Clamoun

all parts (livestock but not small household pets)
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
  

Laburnum

Laburnum

all parts, especially seeds*

 
 
+Laburnocytisus ĎAdamiií Adam's laburnum
Broom laburnum
all parts, especially seeds*
 
 
Lagenaria

Calabash
Bottle gourd

poisonous
 
 
Lantana

Lantana
Ham 'n eggs
Bacon and eggs
Spanish flag

all parts poisonous
to livestock
 
 
Lathyrus sativus

Indian pea
Grass pea
Blue sweet pea
Chickling vetch
Indian pea
Indian vetch
White vetch

seeds (cumulative)
 
 
Leucothoe

Black laurel
Doghobble
Sweetbells

leaves, nectar
 
 
Ligustrum Privet leaves and berries
 
 
Lilium Lily poisonous, including pollen,
especially to cats*
 
 

Lobelia
except L. erinus

Lobelia
Asthma Weed
Indian Tobacco
Pukeweed
Vomitwort

all parts
 
 
Lolium temulentum

Darnel
Cockle
Poison ryegrass

seeds and seed heads
 
 
Lupinus

Lupin
Lupine

seeds
 
 
Lysichiton Skunk cabbage poisonous, 
especially to cats
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Malus domestica Apple seeds mildly poisonous
 
 
Mandragora Mandrake all parts
 
 
Manihot esculenta

Cassava
Manioc
Yuca

roots, leaves poisonous
 in unprocessed form
 
 
Melia azedarach

White cedar
Persian lilac
Chinaberry
Bead tree
Lunumidella
Ceylon cedar
Malai vembu

leaves, berries*
 
 
Menispermum Moonseed all parts*
 
 
Mirabilis

Marvel of Peru
Four oíclock plant

seeds

 
 
Monstera deliciosa

Swiss cheese plant
Cheese plant
Ceriman
Fruit salad plant
Monster fruit
Monsterio delicio
Monstereo
Mexican breadfruit
Monstera

all parts, especially unripe fruit (ripe fruit edible)

 
 
Myristica fragrans Nutmeg poisonous to humans in high doses, to animals in low doses
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Narcissus Daffodil bulbs* and stems
 
 
Nerium oleander Oleander all parts, including smoke when burning*
 
 
Nicotiana Tobacco plant all parts*
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Oenanthe crocata Hemlock water-dropwort all parts*

 
 
Ornithogalum

Chincherinchee
Star of Bethlehem
Sun star
Pregnant onion
False sea onion
Snake flower
Bath asparagus
Prussian asparagus

all parts, especially bulbs
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Papaver somniferum Opium poppy sap
 
 
Parthenocissus

Virginia creeper
Japanese creeper
Boston ivy
Sevenleaf creeper
Thicket creeper
Woodbine
Grape woodbine

berries
 
 
Passiflora caerulea

Hardy passion flower
Blue passion flower
Common passion flower

leaves

 
 
Phaseolus lunatus

Lima bean
Butter bean

seeds when raw

 
 
Phaseolus vulgaris Kidney bean seeds when raw
 
 
Philodendron all parts
 
 
Physostigma venenosum

Calabar bean
Ordeal bean

seeds
 
 
Phytolacca

Pokeweed
American nightshade
Cancer jalap
Coakum
Garget
Inkberry
Pigeon berry
Pocan bush
Redweed

leaves (other parts debated) by eating and entering by a cut in the skin
 
 
Podophyllum Mayapple all parts
 
 
Polygonatum

Solomonís seal
King Solomon's seal

berries
 
 
Polyscias Aralia all parts
 
  
Prunus laurocerasus

Cherry laurel
English laurel
Laurel

all parts except flesh of berry
 
 
Prunus lusitanica Portugal laurel seed kernels
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Quercus Oak leaves & acorns poisonous to livestock (except pigs)
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
Ranunculus

Buttercup
Spearwort
Water crowfoot
Lesser celandine

poisonous to livestock
 
 

Rhamnus
including Frangula

Alder buckthorn
Buckthorn

berries

 
 
Rheum rhaponticum Rhubarb leaves
 
 
Rhododendron pollen & nectar; whole plant poisonous to livestock
 
 
Ricinus communis Castor oil plant all parts, especially seeds
 
 
Robinia pseudoacacia

Locust
Black locust
False acacia

all parts, especially seed-pods, except flowers
 
 
Ruta Rue all parts*
 
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 

Sambucus
except S. nigra

Nightshade
Horsenettle

green parts & berries*

 
  
Scilla Squill all parts
 
 

Solanum
most species

Nightshade
Horsenettle

green parts & berries*
 
 
Solanum dulcamara

Woody nightshade
Bittersweet nightshade
Bitter nightshade
Amara Dulcis
Fellenwort
Poisonberry
Scarlet berry
Snakeberry
Violet bloom

berries*
 
 
Solanum lycopersicum Tomato foliage
 
 
Solanum nigrum

Black nightshade
Duscle
Garden nightshade
Hound's berry
Petty morel
Wonder berry
Small-fruited black nightshade
Popolo

all parts, especially unripe berries*
 
 

Solanum pseudocapsicum
syn. Solanum karstenii
syn. Solanum microcarpum

Jerusalem cherry
Madeira winter cherry
Winter cherry
Christmas cherry

leaves, berries
 
 
Solanum tuberosum Potato foliage and green-tinged tubers
 
 
Spartium junceum

Spanish broom
Weaver's broom

all parts, especially seeds
 
 
Spathiphyllum

Peace lily
Spath lily

leaves
 
 
Strychnos nux-vomica Strychnine Tree seeds and bark*
 
 
Symphoricarpos

Snowberry
Waxberry

berries
 
 
Symphytum

Comfrey
Healing herb
Blackwort
Bruisewort
Wallwort
Gum plant

all parts
 
 
Syngonium

Arrowhead plant
Arrowhead vine
Goosefoot vine
Arrowhead philodendron
Goosefoot
Trileaf wonder
African evergreen

all parts
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Tabernaemontana

Crepe jasmine
Crape jasmine
Milkwood
Pinwheel Flower
Nero's Crown

sap
 
 
Tamus communis Black bryony all parts
  
 
Taxus baccata Yew all parts except flesh of berries, seeds*


 
 

Toxicodendron vernicifluum
syn. Rhus verniciflua

Japanese lacquer tree
Japanese sumach

sap

 
 
Tulipa Tulip all parts
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Veratrum False hellebore all parts, especially root and rhizomes
 
 
Viscum album

Mistletoe
European mistletoe
Common mistletoe

all parts
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Wisteria

Wisteria
Wistaria

seeds
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
 
Xanthium Cocklebur seedlings and seedlings poisonous to livestock
 
Return to index
 
 
Botanical name Common name Poisonous part/s

Illustration

_____________ _____________ _______________

__________

 
Zantedeschia

Arum lily
Calla lily

all parts*
 
 
Zigadenus

Deathcamas
Star lily

all parts*
 
 

 

Thank you to:

Forest and Kim Starr for their image of Allamanda.

Wikimedia Commons - http://commons.wikimedia.org/wiki/Main_Page  - and Wikipedia - http://en.wikipedia.org/wiki/Main_Page - for use of their images.

If weíve used your picture inadvertently without permission please contact us and we will either remove it or credit it accordingly.

 

 

Copyright © Eve Pavitt 2010