Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My cat ate Lemon Verbena - what should I do?
Aloysia triphylla
Potentially toxic
Contact your veterinarian or an animal poison-control resource now, especially if any amount was chewed or swallowed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Signs to watch for
Gastrointestinal upset, including vomiting, diarrhea, and potential skin irritation upon contact.
Escalation note
Ingestion may cause discomfort; please contact your veterinarian if your cat shows signs of distress or persistent vomiting.
What to watch for
Most likely signs: stomach upset (vomiting, drooling, lack of appetite) and colicky discomfort (restlessness, hunching, hiding). Reactions are usually mild, but a cat that keeps vomiting can dehydrate quickly.
Time window
Exact onset and duration aren't well documented for lemon verbena in cats; essential-oil GI upset typically begins within a few hours of ingestion and resolves once the source is removed.
When to call the vet
Call your vet if vomiting or diarrhea continues past 12 hours, your cat refuses food at the next meal, or you see lethargy or signs of dehydration. Sooner if a kitten, senior cat, or any cat with a known illness is involved.
What this means for your cat
Cats should not nibble on lemon verbena. The ASPCA classifies it as toxic to cats because of its essential oils, which can irritate a cat's stomach and cause colic. Cats metabolize plant essential oils less efficiently than dogs, so even a small bite warrants attention.
Sources: ASPCA (no first-aid guidance).
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.