Safety verdict
Consulted references classify the plant as toxic or irritating for that pet type.
Pet ingestion lookup
My cat ate Lemon Grass - what should I do?
Cymbopogon citratus
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, vomiting, and potential irritation of the mouth or throat.
Escalation note
Ingestion can cause physical irritation due to the sharp, fibrous nature of the leaves and chemical irritation from essential oils. Please contact your veterinarian if your cat has ingested this plant.
First aid at home
Move the cat away from the plant and gently wipe out any plant matter from the mouth. If essential oil contacted the fur or skin, wash with a mild dish soap to prevent further absorption through grooming. Do not induce vomiting unless directed by a veterinarian or poison control.
What to watch for
Most common after chewing the plant is stomach upset: vomiting, occasional diarrhea, and inappetence. Concentrated lemongrass essential oil exposure can additionally cause drooling, lethargy, anorexia, and respiratory or skin irritation. Large amounts of fibrous leaves can also cause GI obstruction in cats.
Time window
GI signs from chewing the plant typically appear within a few hours and resolve in 24 hours with supportive care. Essential-oil exposure can take 3–7 days to fully resolve.
When to call the vet
Call a vet or ASPCA Poison Control (888-426-4435) if your cat was exposed to lemongrass essential oil, vomits more than once or twice, refuses food for more than a day, or shows lethargy, breathing changes, or signs of obstruction.
What this means for your cat
Cats: ASPCA lists lemon grass as toxic to cats, with essential oils and cyanogenic glycosides as the toxic principles. Cats are especially vulnerable because they lack the liver enzymes needed to clear citrus-type essential oils efficiently — concentrated lemongrass oil is far more dangerous than chewing on a blade in the garden.
Sources: ASPCA, Pet Poison Helpline.
Poison-control resources
This page summarizes source-bound plant-safety information and is not veterinary advice.