Cat Health
Lily Poisoning in Cats
Published Last updated 4 min read
Quick answer
True lilies — Easter, tiger, Asiatic, day, and related species — cause acute kidney failure in cats. Every part is toxic: petals, leaves, stems, pollen, and even vase water. If your cat chewed a lily, licked pollen, or drank from the vase, call your vet or Animal PoisonLine on 01202 509000 and go to an emergency clinic immediately — treatment within eighteen hours saves lives.
Key takeaways
- True lilies cause acute kidney failure in cats — there is no safe dose; a single leaf, pollen, or vase water can be enough.
- Easter, tiger, Asiatic, day, and related Lilium/Hemerocallis species are the main UK bouquet risk — never bring them into a cat home.
- Call your vet or Animal PoisonLine (01202 509000) immediately after any exposure — do not wait for symptoms.
Why lilies kill cats
Cats are uniquely sensitive to unidentified toxins in plants of the Lilium and Hemerocallis (day lily) genera. Ingestion causes acute tubular necrosis — rapid destruction of kidney cells — leading to kidney failure within one to three days.
There is no antidote. Treatment relies on preventing toxin absorption and supporting kidney function with aggressive fluid therapy before irreversible damage occurs.
Dogs may develop mild gastrointestinal upset from lilies but do not suffer the same kidney failure cats do. This toxicity is cat-specific and among the most dangerous plant poisonings in feline medicine.
Which plants are dangerous?
Highly toxic true lilies (cause kidney failure in cats)
- Easter lily
- Tiger lily
- Asiatic lily
- Japanese show lily
- Rubrum lily
- Day lily (Hemerocallis species)
- Stargazer lily
- Wood lily
Not true lilies — different toxicity profile
- Peace lily, calla lily, lily of the valley — cause oral irritation, drooling, and vomiting but not the same acute renal failure. Still keep away from cats and contact your vet if ingested.
When uncertain about the plant species, assume kidney-toxic lily exposure and seek emergency care.
Exposure types and risk
| Exposure type | Risk to cats |
|---|---|
| Chewing leaf, petal, or stem | High — can cause kidney failure; no safe dose |
| Licking pollen from fur or paws | High — pollen alone can be enough |
| Drinking vase water | High — toxin leaches into water |
| Brushing against bouquet then grooming | High — pollen transfer via fur or owner clothing |
| Peace / calla lily (not true lily) | Oral irritation — still call your vet |
Symptoms of lily toxicosis
Early signs (within 2–12 hours):
- Vomiting — often the first sign
- Loss of appetite
- Lethargy and depression
Kidney failure (24–72 hours):
- Increased thirst then decreased drinking
- Reduced or absent urination
- Dehydration
- Bad breath from urea buildup
Some cats show minimal early signs. Do not wait for symptoms — by the time kidney values rise on bloodwork, damage may be severe.
Emergency treatment
If lily exposure is possible:
- Call your vet or Animal PoisonLine (01202 509000) immediately — do not wait for symptoms
- Bring the plant or a photo for identification if possible
- If your daytime practice is closed, use the Vets Now emergency clinic finder
- Go to the clinic as advised — even if your cat seems well
Treatment within 18 hours of ingestion, before azotaemia develops, offers the best prognosis:
- Induced vomiting if ingestion was very recent
- Activated charcoal to limit absorption
- Aggressive IV fluid diuresis for 48–72 hours minimum
- Serial bloodwork monitoring kidney values (creatinine, BUN, phosphorus)
- Anti-nausea medication and supportive care
Cats treated after established kidney failure may require prolonged hospitalisation or dialysis. Some do not survive despite intensive care.
Prevention — no lilies in cat households
- Never bring true lilies into a home with cats — including bouquets from florists
- Tell friends and family lilies are forbidden gifts
- Check floral arrangements — lilies are commonly mixed with roses and greenery
- Remove lilies from gardens accessible to outdoor cats
- Wash hands and clothing after handling lilies before touching your cat
Safer flower alternatives include roses, sunflowers, orchids, and gerbera daisies — though any plant ingestion can cause mild stomach upset.
Sources & further reading
Facts in this guide are rewritten in plain English from publicly available UK advice. We name the organisation where a specific point comes from their guidance. Links below go to the original pages — use them to read the source material directly.
PETHEALTH+ is independent. These organisations do not sponsor, approve, or partner with this website. Guidance checked against sources listed below (last updated 2026-07-10).
- Kidney Disease in Cats
- Cat Not Eating
- When to See an Emergency Vet in the UK
- Why Is My Cat Vomiting?
- Can I Give My Cat Antihistamines? UK Guide
- Can Cats Eat Bread UK?
- Can Cats Eat Cheese UK?
- Can Cats Eat Ice Cubes UK?
Also see symptoms, symptom checker, and poison guide.
Frequently Asked Questions
- Which lilies are poisonous to cats?
- True lilies — including Easter, tiger, Asiatic, day, and Japanese show lilies — cause acute kidney failure. Peace and calla lilies cause oral irritation but not the same kidney toxicity. When in doubt, treat any lily exposure as an emergency.
- How much lily is toxic to cats?
- Any exposure may be lethal — ingesting a single leaf, licking pollen, or drinking vase water can cause kidney failure. There is no safe amount.
- What are symptoms of lily poisoning in cats?
- Vomiting, lethargy, and loss of appetite appear within hours. Kidney failure develops within one to three days, with reduced urination and dehydration. Early treatment before symptoms is critical.
- Can cats survive lily poisoning?
- Yes — if treated within eighteen hours of ingestion, before kidney damage occurs. Delayed treatment after kidney failure develops carries a much poorer prognosis.