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Is Kentucky Coffee Tree Toxic to Cats?

☠️ ToxicSeverity: Severe
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Yes, the Kentucky coffee tree is toxic to cats. The seeds and the sweet pulp around them contain cytisine, a nicotine-like alkaloid that attacks the nervous system.

Also known as: American Coffee Berry, Coffeenut, Gymnocladus dioicus · Gymnocladus dioicus

What makes it toxic

Cytisine, a nicotine-like alkaloid concentrated in the large seeds and the greenish pulp of the pods. People roast the seeds as a coffee substitute, but raw seeds and pulp are hazardous to pets.

Warning signs to watch for

Vomiting, drooling, lethargy and loss of appetite within hours, followed by rapid or labored breathing, muscle twitching, tremors and seizures as the alkaloid takes hold.

What to do if your cat eats it

Call a vet immediately if seeds or pod pulp were eaten. Early professional decontamination and supportive care can prevent escalation — do not wait for tremors to appear.

Common questions

Are the seeds dangerous before they ripen?

Yes — the fresh seeds and green pulp are the most toxic stage. Fallen pods under an ornamental or street tree are the main way pets meet them.

Is the danger only in the seeds?

The seeds and pod pulp carry the cytisine load; leaves are considered less dangerous but are not recommended chewing material for pets either.

More plants checked for cats

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.