Can cats eat Rosemary?
Yes. Fresh rosemary (Salvia rosmarinus) is non-toxic to cats and some gardeners grow it alongside catnip without issue. Rosemary essential oil is a different story — concentrated oils are not cat-safe.
What's the full picture?
Cats may occasionally nibble a rosemary shoot while exploring a garden. The fresh plant is non-toxic according to veterinary poison references, and small ingestions don't cause problems.
The fragrant oils are more concentrated in dried rosemary and especially in rosemary essential oil. A cat that licks up culinary rosemary sprinkled on a meal is fine; a cat exposed to rosemary essential oil (used in diffusers, 'natural' flea products, or undiluted aromatherapy) can show significant toxicity.
Rosemary in pet foods and shampoos is usually in safe, diluted concentrations and is not a concern.
Fresh herb vs. essential oil — the general rule
This "fresh plant fine, concentrated oil not" pattern shows up across many kitchen herbs, not just rosemary — the same logic applies to basil, mint, and others. Essential oils concentrate a plant's compounds to a level the fresh leaf never reaches, and cats process many of these compounds far less efficiently than humans or dogs do, particularly compounds that need to be broken down through the liver's glucuronidation pathway. A pinch of dried rosemary in cooking is a completely different exposure to a rosemary oil diffuser running in the same room for hours.
If you grow rosemary at home
A rosemary bush in the garden or a pot on the windowsill is safe to have around cats — most cats show little interest in it beyond an occasional curious sniff or nibble, since it isn't a plant that specifically attracts them the way catnip or cat grass does.
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Portion control helps too — a slow-feeder bowl slows down greedy eaters and keeps shared-food expectations low.
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About this guidance
Every entry on this site is compiled from published US veterinary toxicology sources — AAFP, ASPCA Animal Poison Control Center (ASPCA APCC) references, AVMA-registered practice materials, and peer-reviewed feline medicine literature. Where the evidence is mixed, we err on the cautious side because cats are unusually sensitive to many common substances that are harmless to humans and even to dogs.
This is general information written for US cat owners. It is not personalised veterinary advice for your specific cat, their age, weight, medical history, or the exact exposure you're dealing with. If your cat has eaten something or is unwell, call your vet first. The ASPCA Poison Control on (888) 426-4435 is available 24/7 for a small fee and can tell you whether an emergency visit is needed.
Entries are reviewed and updated as new research emerges. Spotted an error? Let us know — corrections are investigated and applied within 24 hours. For more context on how we work, see about and our full disclaimer.
Last reviewed: · By the Cat Ate It editorial team
Questions owners ask
Can cats eat Rosemary?
Yes. Fresh rosemary (Salvia rosmarinus) is non-toxic to cats and some gardeners grow it alongside catnip without issue. Rosemary essential oil is a different story — concentrated oils are not cat-safe.
What should I do if my cat has eaten Rosemary?
Call your vet or ASPCA Animal Poison Control at (888) 426-4435 (24/7, charges apply) for guidance specific to your cat.