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Toxic Plants


Note: Although this data was originally gathered for those who keep reptiles, it also pertains to mammals.

There is a mistaken belief that all animals know what is and is not
good to eat. This is a mistake—a potentially lethal mistake—when
you are talking about an animal who has been removed from its
native habitat. An animal in its native environment does know what
it can and cannot eat. If it makes a mistake, and becomes merely
ill, it will not eat that plant again. If it eats a plant that kills it, well,
it clearly won’t be eating that again! The fact that the leading
causes of death in the wild is not from eating toxic foods indicates
that animals either learn their lessons well by observing older
conspecifics, or through a sort of genetic field guide to edible plants.

Once you remove an animal from its environment, however, that field
guide becomes useless. Instead, the animal will pretty much try to
eat anything that resembles what it is programmed (learned or
instinctual behavior) to eat. Hence, toxic plants such as poinsettias,
with their wide deep green leaves and attractive red flowers* look like
a terrific snack for a hungry or curious iguana. A broad green leaf and
palm frond on a tree frog t-shirt looks good enough to eat, as they
say.

* Leaves, actually, the flowers of a poinsettia are the small yellow
structures in the middle of the red leaves.

If you are thinking about furnishing a tank with plants or are
considering letting your animals free-roam in your house or in an
outdoor enclosure, you need to be sure that the plants in those
areas are not toxic.

The toxic chemicals of plants are passed to an animal in one of two
ways - by ingestion of plant material, or by dermal contact with a
plant. If anyone has ever had poison oak or ivy, you are quite familiar
with this latter method of transmission. Some plants are completely
toxic; others have only certain parts that are toxic, such as the
leaves, or flowers. Keep this list somewhere handy so that you may
refer to it as needed when considering plants for your animals.

If you are in doubt as to whether a plant, or part of a plant, is toxic,
do not use the plant. Or, discuss it with other herpetoculturists and
horticulturists to see if they have ever had experience with that plant.

 


A 

ACOCANTHERA

fruit and flowers

ACONITE (Monkshood)

roots, flowers and leaves

AMARYLLIS (A. belladonna)

bulbs contain alkaloids

AMSINCKIA (Tarweed)

foliage, seeds

ANENOME (Wildflower)

whole plant

ANGEL TRUMPET TREE (Datura arborra)

flowers and leaves

APPLE

seeds

APRICOT PITS

inner seed dangerous

ATROPA BELLADONNA

all parts, especially 
black berries

AUTUMN CROCUS

bulbs

AVOCADO

foliage

AZALEAS

all parts are fatal!

B 

BALSAM PEAR

seeds, outer rind of fruit

BANEBERRY (Doll’s Eyes)

red or white berries, roots, 
and foliage

BEACH PEA

all

BETEL NUT PALM

all

BELLADONNA

all

BIRD OF PARADISE

seeds

BITTERSWEET

berries

BLACK LOCUST

bark, sprouts and foliage

BLEEDING HEART

foliage and roots

BLUEBONNETS

all

BLUE FLAG (Iris)

bulbs

BLUE-GREEN ALGAE

some forms are toxic

BLOODROOT

all

BOTTLEBRUSH

flowers

BOXWOOD

all

BUCKEYE HORSE CHESTNUT

sprouts and nuts

BUCKTHORN

fruit, bard

BUTTERCUP

all

C 

CALADIUM

all

CALLA LILY

all

CARDINAL FLOWER

all

CAROLINA JESSAMINE

foliage, flowers and sap

CASSAVA

roots

CASTOR BEAN (castor oil)

uncooked beans

CHALICE VINE (Trumpet vine)

all

CHERRY

bark, twig, leaves &
seed pit

CHERRY LAUREL

foliage and flowers

CHINA BERRY TREE

berries

CHRISTMAS BERRY

berries

CHRISTMAS CACTUS (_Euphorbia_)

entire plant

CHRISTMAS CANDLE

sap

CHRISTMAS ROSE

foliage and flowers

COLUMBINE

foliage, flowers and seeds

COMMON PRIVET

foliage and berries

CORAL PLANT

all parts

CROCUS

bulbs

CROTON

foliage, shoots

CYCLAMEN

foliage, stems and flowers

D 

DAFFODIL

bulbs, foliage, flowers 
and pods

DAPHNE

berries

DATURA (Jimson weed)

leaves, seeds

DEADLY AMANITA

all

DEADLY NIGHTSHADE

foliage, unripe fruit, sprouts

DEATH CAMAS

all

DEATH CAP MUSHROOM

all

DELPHINIUM

all

DEIFFENBACHIA (Dumbcane)

all

DESTROYING ANGEL (Death cap)

all

DOGWOOD

fruit mildly toxic

DUMBCANE

all

DUTCHMAN’S BREECHES

foliage and roots

E 

EGGPLANT

all but the fruit

ELDERBERRY

foliage

ELEPHANT EARS (Taro)

leaves, stem

ENGLISH IVY

leaves, berries

EQUISETUM

all

EUPHORBIA (spurge(s))

foliage, flowers sap

F

FALSE HELLEBORE

all parts

FALSE HENBANE

all

FIDDLENECK (_Senecio_)

all

FLY AGARIC (amanita, death cap)

all

FOUR O’CLOCK

all

FOXGLOVE

leaves, seeds

G 

GELSEMIUM

all

GHOSTWEED

all

GOLDEN CHAIN (Laburnum)

all

H 

HEMLOCK ROOTS (poison & water)

all

HENBANE

seeds

HOLLY, English and American

berries

HORSE CHESTNUT

nuts, twigs

HORSETAIL REED (_Equisetum_)

all

HYACINTH

bulbs

HYDRANGEA

flower

I 

INDIAN TURNIP (Jack-in-the-pulpit)

all

IMPATIENS (Touch-me-not)

all

IRIS (Blue flag)

bulbs

IVY (all forms)

foliage, fruit

J 

JACK-IN-THE-PULPIT

all

JASMINE

foliage, flowers, sap

JASMINE, STAR

foliage, flowers

JATROPHA

seeds, sap

JAVA BEAN

uncooked bean

JERUSALEM CHERRY

berries

JESSAMINE

berries

JIMSON WEED (Thorn apple)

foliage flowers, seed pods

JOHNSON GRASS

all

JUNIPER

needles, stems, berries

L 

LABURNUM

all

LAMBKILL (Sheep laurel)

all

LANTANA CAMARA

foliate, flowers, esp. berries

LARKSPUR

all parts

LAUREL

all parts

LILY OF THE VALLEY

all parts, including water

LIMA BEAN (java bean)

uncooked bean

LOBELIA

all parts

LOCOWEED

all

LOCUST(S)

all

LORDS AND LADIES (cuckoopint)

all

LUPINE

esp. seeds, pods foliage

M 

MACHINEEL

all

MARIJUANA

leaves

MAY APPLE

all except fruit

MESCAL (BEAN)

seed; all parts may be toxic

MILKWEED

foliage

MISTLETOE

berries

MOCCASIN FLOWER

foliage, flowers

MOCK ORANGE

fruit

MONKSHOOD

leaves, roots

MOODSEED

berries

MORNING GLORY

all

MOUNTAIN LAUREL

young leaves, shoots

MUSHROOMS (some wild forms)

caps, stems
N 

NARCISSUS (Paper-white)

bulbs

NATAL CHERRY

berries, foliage

NECTARINE SEED

inner pit only

NICOTINE (tree, bush, flowering)

foliage flowers

NIGHTSHADES

berries, leaves

O

OAK TREES

acorn, foliage

OLEANDER

leaves, branches, sap

P 

PEACH PIT

inner seed

PEAR

seeds

PENNYROYAL

foliage, flowers

PEONY

foliage, flowers

PERIWINKLE

all

PHILODENDRON (some species)

leaves, stem

PINKS

all

PLUMS

foliage, inner seed

POINSETTIA

leaves, flowers

POISON HEMLOCK

foliage, seeds

POISON IVY

foliage, fruit, sap

POISON OAK

foliage, fruit, sap

POISON SUMAC

foliage, fruit, sap

POKEWOOD / POKECHERRY

roots, fruits

POPPY (except California)

all

POTATO

eyes, shoots

PRIVET

all

R 

REDWOOD

resinoids, leached 
wet wood

RHODODENDRON

all parts are fatal!

RHUBARB

foliage, uncooked s
tems

ROSARY PEAS

foliage, flowers, pods

ROSEMARY

foliage in some species

RUSSIAN THISTLE

foliage, flowers

S 

SAGE

foliage in some species

SALMONBERRY

foliage, fruit

SCARLET PIMPERNEL

foliage, flowers, fruit

SCOTCH BROOM

seeds

SENECIO (“fiddle neck”)

all

SKUNK CABBAGE

all

SNAPDRAGON

foliage, flowers

SNOWDROP

all

SNOW-ON-THE-MOUNTAIN (Ghostweed)

all

SPANISH BAYONET

foliage, flowers

STAR JASMINE

foliage, flowers

SQUIRREL CORN

foliage, flowers, seeds

SUDAN GRASS

all

STAR OF BETHLEHEM

foliage, flowers

SUNDEW

foliage

SWEET PEA

seeds and fruit

T 

TANSY

foliage, flowers

TARO (Elephant ears)

foliage

TARWEED

foliage, seeds

THORN APPLE

flowers, foliage, pods

TIGER LILY

foliage, flowers, seed 
pods

TOAD FLAX

foliage

TOBACCO

leaves

TOMATO PLANT

foliage, vines

TOUCH-ME-NOT

all

TOYON BERRY

berries

TRILLIUM

foliage

TRUMPET VINE

all

TULIP

all

V 

VENUS FLYTRAP

all

VERBENA

foliage, flowers

VIRGINIA CREEPER

sap

W 

WATER HEMLOCK

roots, foliage

WILDFLOWER

leaves, flowers

WILD PARSNIP

underground roots, 
foliage

WISTERIA

all

Y 

YAM BEAN

roots, immature pods

YELLOW STAR THISTLE

foliage, flowers

YEW (all varieties)

needles, seeds



All Creatures Animal Hospital
1894 Ohio Pike
Amelia, OH 45102
Phone: 513-797-PETS
Fax: 513-797-7388

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