Common plants toxic to cats
| Plant | Toxin / mechanism | Severity |
|---|---|---|
| True lilies (Easter, tiger, day, Asiatic) | Unknown toxin — every part, even pollen and vase water | Emergency — kidney failure |
| Sago palm | Cycasin — seeds are the most toxic part | Severe — liver failure |
| Pothos | Insoluble calcium oxalate crystals | Moderate — oral pain, drooling, vomiting |
| Monstera | Insoluble calcium oxalate crystals | Moderate — oral irritation, swelling |
| Philodendron | Insoluble calcium oxalate crystals | Moderate — oral irritation, drooling |
| Aloe vera | Saponins and anthraquinones in the latex | Mild–moderate — vomiting, diarrhoea, lethargy |
The aroid family (pothos, monstera, philodendron, peace lily, dieffenbachia) all share the same defence: microscopic calcium oxalate needles that stab the mouth on the first bite. It’s painful and distressing but rarely fatal — most cats stop after one chew. Lilies and sago palm are a different category entirely: even small amounts can kill, and speed of treatment decides the outcome.
What to do if your cat chews a plant
- Remove plant material from your cat’s mouth and move the plant out of reach.
- Identify the plant — take a photo. Treatment depends on the species.
- Call your vet or the ASPCA Animal Poison Control Center: (888) 426-4435 (available 24/7; a consultation fee may apply). Describe the plant and how much was eaten.
- Do not induce vomiting unless a vet tells you to.
- Watch for symptoms: drooling, pawing at the mouth, vomiting, lethargy, loss of appetite. For lilies or sago palm, skip the watching — go straight in.
Cat-safe swaps that scratch the same itch
| Instead of… | Try… |
|---|---|
| Pothos / philodendron (trailing vines) | Spider plant — trailing, tough, and safe (some cats do love chewing it, harmlessly) |
| Monstera (big dramatic foliage) | Calathea / prayer plants — bold patterned leaves, cat-safe |
| Ferny, lush textures | Boston fern — full, fluffy and non-toxic |
| Palmy look (not sago!) | Parlor palm or areca palm — both cat-safe |
Other reliable cat-safe picks: peperomia, hoya, ponytail palm, haworthia and most orchids (Phalaenopsis). "Pet-safe" doesn’t mean "chew-proof", though — a determined cat can still shred a calathea, and any plant eaten in quantity can cause a mild upset stomach.
Check any plant’s cat safety before you buy it
FloraCure’s plant library covers 180+ species, and every one is clearly marked toxic or pet-friendly with ASPCA-sourced safety data — so you can check a plant in the shop before it comes home, or audit the shelf you already have. Scan a mystery plant and get its identity, health and safety status in one go.
Coming soon to Google Play →Living with cats and plants: practical rules
- Audit what you own first — most cat owners are surprised how many of their plants are on the toxic list.
- Keep mildly toxic plants (aroids) on high shelves or in hanging planters; keep severely toxic ones (lilies, sago palm) out of the house entirely.
- Give chewers a legal outlet: a pot of cat grass redirects most nibbling.
- Refuse lily bouquets as gifts, or keep them behind a closed door — pollen transfer alone is dangerous.
- Save the ASPCA poison control number, (888) 426-4435, in your phone now, not during an emergency.
