Toxic Plants For Cats

Written by AZ Animals Staff
Published: September 21, 2010
Written by AZ Animals Staff
Published: September 21, 2010


Our kitties are one of our most loved and treasured family members but did you know that more than 700 of the common plants that we fill our houses and gardens with actually contain substances which can be highly toxic to cats, some even having fatal consequences.



Sometimes it is the whole plant that can be poisonous, where as with others it is just one part (such as the bark, leaves, pollen, stem or the plant’s roots). Here is a list of the top ten houseplants which can be extremely harmful to our moggies and should be avoided.


Top Ten Most Deadly Plants For Cats


Tiger Lillies are thought to be the most poisonous plants for cats, with the whole plant being toxic and causing vomiting, lethargy and loss of appetite if ingested. If left untreated, the poisoning can cause fatal kidney failure within 24 to 72 hours.

Close-up image of an orange tiger lily with trees in the background.
Tiger Lillies can cause vomiting, lethargy, and loss of appetite in cats if ingested.



The Potato Family includes plants such as potatoes, tomatoes, peppers and chillies all of which contain a toxic substance called Glycoalkanoid Solamine which can be poisonous to cats. The raw leaves and stems of these plants can cause aggressive lower gastrointestinal pain if eaten by your cat.



Poison Ivy and other species of Ivy, can be highly toxic to your household pet (as the name suggests). If your cat comes into contact with poison ivy, severe rashes can appear which can become really nasty if left untreated.

Close-up image of poison ivy leaves.
Poison ivy can cause severe rash, which can become unpleasant if left untreated.



Mistletoe is one of the most deadly plants for cats, but it is the berries in particular that you should keep the kitty away from. Ingesting these festive white berries can cause vomiting and diarrhoea, along with blisters in the mouth and breathing problems.



Chrysanthemum is a common household plant throughout the UK but should be approached with caution as far as your four-legged friends are concerned. Simply coming into contact with chrysanthemums can cause your cat to have severe allergic reactions particularly around their nose and mouth.



Weeping Fig trees are quite tempting for cats to sleep underneath but it is the leaves that are the most toxic part. If eaten in large quantities, the weeping fig can be highly poisonous to cats often causing stomach problems.

A weeping fig tree in a blue pot in front of a light-colored stone backdrop.
If eaten in large quantities, the weeping fig can be highly poisonous to cats.



Azalea is a common landscape plant but both the leaves and the flowers can be poisonous to cats. If ingested, this plant can cause vomiting, diarrhoea, abdominal pains, breathing and kidney problems for your moggie.



Juniper Shrubs are one of the most well known berry plants in the country, but it is the ingestion of too many of the leaves from these plants that can lead to severe abdominal pain and upset for your cat.



Bulb Plants such as daffodils and tulips are poisonous for cats, particularly the bulbs. If ingested, bulb plants will cause vomiting and diarrhoea and have been known to have fatal consequences, and should be avoided in your back garden.


Onions are a fairly common garden vegetable but should not be allowed anywhere near your cats. The toxic substance found in the plants can cause anaemia in your cat (with garlic having a similar affect).

Multiple red, white, and yellow onions.
If ingested, onions can cause anaemia in cats.




If you would like to know what other plants may be toxic to your cat, please see the full list below:



A
Alfalfa

Almond (Pits)

Aloe Vera

Alocasia

Amaryllis

Apple (seeds)

Apple Leaf Croton

Apricot (Pits)

Arrowgrass

Asparagus Fern

Autumn Crocus

Avacado (fruit and pit)

Azalea


B
Baby’s Breath

Baneberry

Bayonet

Beargrass

Beech

Belladonna

Bird of Paradise

Bittersweet

Black-eyed Susan

Black Locust

Bleeding Heart

Bloodroot

Bluebonnet

Box

Boxwood

Branching Ivy

Buckeyes

Buddist Pine

Burning Bush

Buttercup



C
Cactus, Candelabra

Caladium

Calla Lily

Castor Bean

Ceriman

Charming Dieffenbachia

Cherry (pits, seeds & wilting leaves)

Cherry, most wild varieties

Cherry, ground

Cherry, Laurel

Chinaberry

Chinese Evergreen

Christmas Rose

Chrysanthemum

Cineria

Clematis

Cordatum

Coriaria

Cornflower

Corn Plant

Cornstalk Plant

Croton

Corydalis

Crocus, Autumn

Crown of Thorns

Cuban Laurel

Cutleaf Philodendron

Cycads

Cyclamen



D
Daffodil

Daphne

Datura

Deadly Nightshade

Death Camas

Devil’s Ivy

Delphinium

Decentrea

Dieffenbachia

Dracaena Palm

Dragon Tree

Dumb Cane


E
Easter Lily

Eggplant

Elaine

Elderberry

Elephant Ear

Emerald Feather

English Ivy

Eucalyptus

Euonymus

Evergreen


F
Ferns

Fiddle-leaf fig

Florida Beauty

Flax

Four O’Clock

Foxglove

Fruit Salad Plant


G
Geranium

German Ivy

Giant Dumb Cane

Glacier IvyGolden Chain

Gold Dieffenbachia

Gold Dust Dracaena

Golden Glow

Golden Pothos

Gopher Purge



H
Hahn’s Self-Branching Ivy

Heartland Philodendron

Hellebore

Hemlock, Poison

Hemlock, Water

Henbane

Holly

Honeysuckle

Horsebeans

Horsebrush

Horse Chestnuts

Hurricane Plant

Hyacinth

Hydrangea


I
Indian Rubber Plant

Indian Tobacco

Iris

Iris Ivy


J
Jack in the Pulpit

Janet Craig Dracaena

Japanese Show Lily

Java Beans

Jessamine

Jerusalem Cherry

Jimson Weed

Jonquil

Jungle Trumpets


K
Kalanchoe


L
Lacy Tree Philodendron

Lantana

Larkspur

Laurel

Lily Spider

Lily of the Valley

Locoweed

Lupine



M
Madagascar Dragon Tree

Marble Queen

Marigold

Marijuana

Mescal Bean

Mexican Breadfruit

Miniature Croton

Mistletoe

Mock Orange

Monkshood

Moonseed

Morning Glory

Mother-in Law’s Tongue

Morning Glory

Mountain Laurel

Mushrooms


N
Narcissus

Needlepoint Ivy

Nephytis

Nightshade


O
Oleander

Onion

Oriental Lily


P
Peace Lily

Peach (pits and wilting leaves)

Pencil Cactus

Peony

Periwinkle

Philodendron

Pimpernel

Plumosa Fern

Poinciana

Poinsettia (low toxicity)

Poison Hemlock

Poison Ivy

Poison Oak

Pokeweed

Poppy

Potato

Pothos

Precatory Bean

Primrose

Privet, Common



R
Red Emerald

Red Princess

Red-Margined Dracaena

Rhododendron

Rhubarb

Ribbon Plant

Rosemary Pea

Rubber Plant


S
Saddle Leaf Philodendron

Sago Palm

Satin Pothos

Schefflera

Scotch Broom

Silver Pothos

Skunk Cabbage

Snowdrops

Snow on the Mountain

Spotted Dumb Cane

Staggerweed

Star of Bethlehem

String of Pearls

Striped Dracaena

Sweetheart Ivy

Sweetpea

Swiss Cheese plant



T
Tansy Mustard

Taro Vine

Tiger Lily

Tobacco

Tomato Plant (green fruit, stem and leaves)

Tree Philodendron

Tropic Snow Dieffenbachia

Tulip

Tung Tree


V
Virginia Creeper


W
Water Hemlock

Weeping Fig

Wild Call

Wisteria


Y
Japanese Yew

English Yew

Western Yew

American Yew




Even though there are a number of plants on this list that are found in nearly every household, don’t panic. If you can’t remove them just make sure that they are out of reach and cannot be nibbled on by your curious kitty as there is no antidote for many of them.

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