Plants that are toxic to cats

The short answer: True lilies (Easter, tiger, Asiatic, Stargazer and daylilies) are the most dangerous plants for cats — even pollen can cause kidney failure. Sago palm, oleander and kalanchoe are also emergencies. Most common houseplants, like pothos and monstera, only irritate the mouth.

Cats chew plants. Some do it out of boredom, some for fiber, some just to make eye contact with you while they do it. So if you share your home with a cat, it’s worth knowing which plants are truly dangerous, which ones are mostly irritating, and which are completely safe.

If your cat may have eaten a lily, go to the vet now. Don’t wait for symptoms. ASPCA Animal Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661 · Animal Poisons Helpline: 1300 869 738. (Fees may apply.)

This guide uses the ASPCA’s toxic and non-toxic plant lists and veterinary sources. It’s general info, not a diagnosis.

Level 1: Emergency plants (can be deadly)

True lilies and daylilies

Easter lily, tiger lily, Asiatic lily, Stargazer, Oriental lily, daylily — all of them. For cats, these are the most dangerous common plants in the house.

• Every part is toxic: petals, leaves, stems, pollen, even the water in the vase.
• A cat grooming pollen off its fur can be enough.
• Symptoms start with vomiting, drooling and hiding, then kidney failure within 1–3 days.
• With fast treatment, most cats survive. Without it, many don’t.

The safest rule: no lilies in a home with cats. Watch out for bouquets — lilies are in a lot of Mother’s Day, Easter and sympathy arrangements. Ask the florist to leave them out.

Note: peace lilies and calla lilies are not true lilies. They’re irritating (see Level 3), not kidney-toxic.

Sago palm

Common as a patio plant in warm parts of the US and in Australian gardens. All parts are toxic, the seeds most of all, and it can cause liver failure in cats and dogs. Keep pets well away from it.

Oleander, kalanchoe and lily of the valley

These contain heart-affecting compounds (cardiac glycosides). Oleander is a common hedge in the US South, California and Australia. Kalanchoe is a cheap flowering succulent sold everywhere. Signs include vomiting, weakness and an abnormal heart rate. Call a vet.

Level 2: Seriously toxic (call your vet)

• Azaleas and rhododendrons — vomiting, weakness, heart problems.
• Tulip, hyacinth and daffodil bulbs — the bulb is the most toxic part; a big concern for cats that dig in pots.
• Cyclamen — the tuber is the dangerous bit.
• Autumn crocus — not the same as spring crocus; can cause severe organ damage.

Level 3: Irritating (common houseplants)

Many of the most popular houseplants contain insoluble calcium oxalate crystals — microscopic needles that sting the mouth. A cat that bites one usually gets an immediate burning feeling, drools, paws at its mouth and maybe vomits. Serious harm is rare because the pain stops them eating much, but it’s miserable for your cat and worth avoiding.

Plant	Problem
Pothos	Calcium oxalates: drooling, vomiting
Heartleaf philodendron	Calcium oxalates
Monstera	Calcium oxalates
Peace lily	Calcium oxalates (not a true lily)
ZZ plant	Calcium oxalates
Dieffenbachia (dumb cane)	Calcium oxalates — can cause throat swelling
Chinese evergreen	Calcium oxalates
Snake plant	Saponins: nausea, vomiting
Aloe vera	Vomiting, diarrhea, lethargy
Jade plant	Vomiting, wobbliness
Dracaena	Vomiting, drooling, dilated pupils
English ivy	Vomiting, diarrhea
Fiddle leaf fig & rubber plant	Irritating sap

The overhyped one: poinsettia

Every December, poinsettias get treated like poison. In reality, they’re mildly toxic: the milky sap can cause drooling, mouth irritation and an upset stomach. Keep it out of reach, but don’t panic if your cat takes a nibble.

12 cat-safe swaps

Love the look of a toxic plant? There’s usually a safe alternative.

Instead of…	Grow…
Pothos (trailing)	Hoya or string-of-turtles peperomia
Snake plant (tough, upright)	Cast iron plant
Monstera (big, tropical)	Parlor palm or areca palm
Peace lily (flowers in low light)	African violet or moth orchid (Phalaenopsis)
Aloe vera (succulent)	Haworthia or echeveria
Jade plant (sun, tree-like)	Ponytail palm
Chinese evergreen (colorful)	Calathea / prayer plant
Rubber plant (glossy)	Peperomia or money tree
English ivy	Spider plant in a hanging basket
Fern-look toxic plants (asparagus fern)	Boston fern or bird’s nest fern

Bonus: grow a pot of cat grass (wheat or oat grass) and put it where your cat likes to chew. Many cats leave the other plants alone once they have their own.

How to keep cats away from plants

1. Go up. Hanging planters and high shelves solve most problems (cats can jump — think really high, or a closed room).
2. Cover the soil with large pebbles or pine cones so it isn’t a litter box or a digging site.
3. Citrus peels around the base deter many cats.
4. Give them a better option: cat grass, catnip or a window perch near safe plants.

Lily poisoning: what happens and when

According to the U.S. FDA, the first signs usually appear within a few hours: vomiting, drooling, loss of appetite and hiding. Some cats then seem to improve — which is the dangerous part — before kidney failure develops, typically within 1–3 days. The sooner a vet starts treatment, the better the chance of saving the kidneys.

Time after exposure	What you may see
0–6 hours	Vomiting, drooling, not eating, hiding
12–24 hours	Some cats seem to improve for a while
24–72 hours	Drinking and urinating more, then less; weakness; kidney failure

Don’t wait for symptoms. If a cat touched, chewed or licked pollen from a true lily or daylily, call a vet now.

US holiday and occasion plants: quick check

Seasonal plants and bouquets cause a lot of calls to poison lines. Status from the ASPCA lists:

Occasion	Plant	For cats
Valentine’s Day, Mother’s Day	Lilies in bouquets	Emergency — remove them
Valentine’s Day	Roses	Non-toxic (watch the thorns)
Easter	Easter lily	Emergency
Spring	Tulip and hyacinth bulbs, daffodils	Toxic (bulbs most of all)
Fall, Thanksgiving	Chrysanthemums (mums)	Toxic — vomiting, drooling
Fall	Autumn crocus	Severely toxic
Christmas	Poinsettia	Mildly toxic
Christmas	Amaryllis, mistletoe, holly	Toxic
Christmas	Christmas cactus	Non-toxic
Year-round gift plant	Kalanchoe	Toxic (heart effects)

Getting flowers delivered? Ask the florist for a lily-free arrangement — most will swap them for roses, sunflowers or snapdragons.

What to have ready when you call poison control

1. The plant’s name — or a photo of it, or a piece in a bag.
2. What part and how much your cat may have eaten (leaf, flower, pollen, vase water).
3. When it happened, as closely as you can.
4. Your cat’s weight and age, and any health problems.
5. Symptoms so far.

Write the poison line numbers on the fridge or save them in your phone before you need them.

If your cat keeps chewing plants

Chewing is normal cat behavior, not a sign something is wrong. To redirect it:

• Offer a pot of cat grass (oat or wheat grass) in the cat’s favorite spot.
• Move the plants your cat targets to a room with a closed door or to hanging planters.
• Cover the soil with large stones so pots aren’t litter boxes.
• Play more. Bored indoor cats chew more; two short play sessions a day help.
• Avoid sprays that claim to repel cats unless the label confirms they’re safe for pets and the plant.

If your cat ate a plant

1. Take any plant pieces out of its mouth and keep the cat away from the plant.
2. Identify the plant — take a photo or bring a piece with you.
3. Call your vet or a pet poison line (numbers at the top). Don’t try to make your cat vomit unless a vet tells you to.
4. For lilies, sago palm, oleander or kalanchoe: go to the vet even if your cat seems fine.

Want the full list of safe plants for cats and dogs, sorted by light? Here’s our guide to pet-safe houseplants.