Canadian Poisonous Plants Information System

All poisonous plants

Scientific name
precatory-pea
red maple
monk's hood
Ohio buckeye
horse-chestnut
purple cockle
tree-of-heaven
golden-trumpet
wild onion
onion
garlic
chives
candalabra aloe
aloe - A. barbadensis
Peruvian lily
prostrate pigweed
smooth pigweed
redroot pigweed
amaryllis (A. belledonna)
amaryllis (A. vittata)
Saskatoon (a serviceberry)
fiddleneck
scarlet pimpernel
flamingo lily
spreading dogbane
hemp dogbane
Jack-in-the-pulpit
horseradish
wild ginger
showy milkweed
common milkweed
eastern whorled milkweed
pawpaw
Astragalus (A. adsurgens)
two-grooved milk-vetch
Canadian milk-vetch
Astragalus (A. lentiginosus)
timber milk-vetch
oats
wild false indigo
wild indigo
yellow rocket
five-hooked bassia
Australian umbrella tree
bird rape
Indian mustard
rapeseed
wild cabbage
caladium
wild calla
marijuana
blue cohosh
Russian knapweed
yellow star-thistle
bur buttercup
greater celandine
lamb's-quarters
chrysanthemum
stinking rabbitbrush
western water-hemlock
spotted water-hemlock
northern water-hemlock
Kaffir lily
croton
autumn crocus
poison-hemlock
lily-of-the-valley
cyclamen
hound's tongue
pink lady's-slipper
yellow lady's-slipper
showy lady's-slipper
garland daphne
spurge-laurel
February daphne
angel's trumpet
jimsonweed
low larkspur
tall larkspur
Menzies larkspur
green tansy mustard
squirrel-corn
Dutchman's-breeches
western bleedingheart
gas plant
giant dumbcane
dumbcane
spotted dumbcane
mother-in-law plant
foxglove
leatherwood
blueweed
field horsetail
marsh horsetail
wormseed mustard
burningbush
European spindletree
white snakeroot
cypress spurge
leafy spurge
sun spurge
candelabra-cactus
caper spurge
crown-of-thorns
petty spurge
poinsettia
penciltree
buckwheat
snowdrop
maidenhair tree
ground-ivy
glory lily
tall manna grass
broom snakeweed
Kentucky coffeetree
English ivy
sneezeweed
naked-flowered sneezeweed
sunflower
spatulate-leaved heliotrope
giant hogweed
common hop
English bluebell
hydrangea
Colorado rubberweed
black henbane
St. John's-wort
English holly
American holly
morning glory
yellow iris
blue flag iris
false ragweed
black walnut
Devil's-backbone
sheep-laurel
bog-laurel
kochia
golden-chain
prickly lettuce
yellow sage
Canada nettle
sweet pea
grass pea
motherwort
common privet
yellow toadflax
cardinalflower
Indian-tobacco
blue cardinalflower
Tartarian honeysuckle
fly honeysuckle
silvery lupine
Burke's lupine
large-leaved lupine
small lupine
silky lupine
Osage-orange
mango
alfalfa
white sweet-clover
yellow sweet-clover
moonseed
western minniebush
Swiss-cheese plant
narcissus
daffodil
oleander
tobacco
sensitive fern
star-of-Bethlehem
purple locoweed
locoweed (Oxytropis sericea)
Iceland poppy
Oriental poppy
corn poppy
opium poppy
Virginia creeper
wild parsnip
avocado
California bluebell
reed canarygrass
philodendron
heart-leaved philodendron
American mistletoe
Chinese-lantern
ground-cherry
pokeweed
ponderosa pine
May-apple
primula
pin cherry
black cherry
red chokecherry
bracken
white oak
red oak
black oak
bulbous buttercup
celery-leaved buttercup
wild radish
radish
European buckthorn
alder buckthorn
rhubarb
white rose-bay
California rose-bay
western poison-oak
poison ivy
poison sumac
castor-bean
black locust
cut-leaved coneflower
black-eyed Susan
garden-sorrel
sheep sorrel
veined dock
American elder
European elder
greasewood
Siberian scilla
entire-leaved groundsel
tansy ragwort
common groundsel
wild mustard
climbing nightshade
black nightshade
Jerusalem-cherry
potato
velvety goldenrod
Sorghum
Johnson grass
Sudan grass
poison suckleya
thin-leaved snowberry
prickly comfrey
common comfrey
skunk cabbage
tansy
English yew
Canada yew
Japanese yew
golden-bean
stinkweed
alsike clover
red clover
white clover
seaside arrow-grass
marsh arrow-grass
tulip
stinging nettle
false hellebore
Guelder-rose
broad bean
common vetch
hairy vetch
Japanese wisteria
cocklebur
white camas
death camas

Another search?