Toxic Houseplants for Pets
Many popular houseplants are toxic to dogs and cats. Some cause mild irritation; others can be fatal. Here's what every pet owner needs to know.
Highly Toxic — Can Be Fatal
Lilies (Lilium and Hemerocallis species)
Toxic to: Cats (extremely — all parts including pollen and water)
Symptoms: Vomiting, lethargy, kidney failure within 24-72 hours
Urgency: EMERGENCY. Even small exposures can be fatal to cats.
Sago Palm (Cycas revoluta)
Toxic to: Dogs and cats
Most dangerous part: Seeds (contain highest concentration of cycasin)
Symptoms: Vomiting, diarrhoea, liver failure, death
Fatality rate: 50% even with treatment
Oleander (Nerium oleander)
Toxic to: Dogs, cats, horses
Symptoms: Cardiac arrhythmias, vomiting, drooling, tremors
Even water from a vase containing oleander is toxic.
Autumn Crocus (Colchicum autumnale)
Toxic to: Dogs and cats
Symptoms: Bloody vomiting, diarrhoea, organ failure, bone marrow suppression
Appears delayed — symptoms may not show for days.
Moderately Toxic — Cause Illness
Dieffenbachia (Dumb Cane)
Toxic to: Dogs and cats
Mechanism: Contains calcium oxalate crystals that cause intense oral pain
Symptoms: Oral pain, drooling, vomiting, difficulty swallowing
Philodendron
Toxic to: Dogs and cats
Symptoms: Oral irritation, drooling, vomiting, difficulty swallowing
Pothos (Devil's Ivy)
Toxic to: Dogs and cats
Symptoms: Oral irritation, vomiting, drooling
Note: Very popular and very commonly ingested.
Aloe Vera
Toxic to: Dogs and cats
Symptoms: Vomiting, diarrhoea, lethargy, tremors
The gel is mildly toxic; the latex layer beneath the skin is worse.
Jade Plant (Crassula ovata)
Toxic to: Dogs and cats
Symptoms: Vomiting, depression, incoordination
English Ivy (Hedera helix)
Toxic to: Dogs and cats
Symptoms: Vomiting, diarrhoea, drooling, abdominal pain
Mildly Toxic — Cause Discomfort
- Spider Plant: Mild GI upset (cats love to chew them)
- Peace Lily: Oral irritation, drooling (not a true lily — not fatal like Lilium)
- Rubber Plant: Mild GI upset
- Dracaena: Vomiting, drooling, dilated pupils in cats
Safe Alternatives
These popular plants are non-toxic to dogs and cats:
- Boston Fern — lush, safe, loves humidity
- Spider Plant — technically mild irritant but generally safe
- Calathea/Prayer Plant — beautiful, pet-safe
- Peperomia — huge variety, all safe
- Haworthia — succulent, safe, low maintenance
- African Violet — flowering, safe
- Parlour Palm — elegant, safe
- Orchids (Phalaenopsis) — non-toxic
- Cast Iron Plant — hardy, safe
- Air Plants (Tillandsia) — safe, unique
What to Do If Your Pet Eats a Toxic Plant
Prevention
- Place toxic plants in rooms pets can't access
- Use hanging planters out of reach
- Provide cat grass as a safe chewing alternative
- Train "leave it" for dogs
- When in doubt, check before buying — ASPCA has a complete database
Pet Capsule's vault stores your pet's health records and emergency contacts for quick access in plant poisoning emergencies.