Pet safety
Is Rock Hyssoptoxic to cats & dogs?
Hyssopus officinalis subsp. aristatus
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Hyssopus officinalis subsp. aristatus
Is rock hyssop safe for cats and dogs?
Mildly. The ASPCA flags rock hyssop as mildly toxic to cats and dogs — a chewing pet gets oral irritation and drooling rather than a medical emergency, but it is still worth a high shelf. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. Hyssopus officinalis is not individually listed by the ASPCA Toxic and Non-Toxic Plants database, so a pet-safe label cannot be confirmed; treat with caution and verify with a vet. Its essential oil is rich in pinocamphone, a ketone that can be neurotoxic in large doses, so prevent significant ingestion by pets.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats rock hyssop?
Hyssopus officinalis is not individually listed by the ASPCA Toxic and Non-Toxic Plants database, so a pet-safe label cannot be confirmed; treat with caution and verify with a vet. Its essential oil is rich in pinocamphone, a ketone that can be neurotoxic in large doses, so prevent significant ingestion by pets. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to rock hyssop, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate rock hyssop
- Remove any plant material from your pet's mouth and move rock hyssop out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of rock hyssop to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Pet-safe alternatives to rock hyssop
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Basil — non-toxic to cats and dogs (care guide)
- Herb garden — non-toxic to cats and dogs (care guide)
- Rosemary — non-toxic to cats and dogs (care guide)
- Thyme — non-toxic to cats and dogs (care guide)
Rock Hyssop and pets — frequently asked questions
Is rock hyssop toxic to cats?
Rock Hyssop (Hyssopus officinalis subsp. aristatus) is mildly toxic to cats according to the ASPCA. Hyssopus officinalis is not individually listed by the ASPCA Toxic and Non-Toxic Plants database, so a pet-safe label cannot be confirmed; treat with caution and verify with a vet. Its essential oil is rich in pinocamphone, a ketone that can be neurotoxic in large doses, so prevent significant ingestion by pets. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is rock hyssop toxic to dogs?
Per the ASPCA, Rock Hyssop (Hyssopus officinalis subsp. aristatus) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like rock hyssop is best removed from the floor and low shelves entirely.
What happens if my pet eats rock hyssop?
Hyssopus officinalis is not individually listed by the ASPCA Toxic and Non-Toxic Plants database, so a pet-safe label cannot be confirmed; treat with caution and verify with a vet. Its essential oil is rich in pinocamphone, a ketone that can be neurotoxic in large doses, so prevent significant ingestion by pets. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to rock hyssop, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate rock hyssop?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of rock hyssop to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to rock hyssop?
If you want a similar look without the risk, good non-toxic swaps include basil, herb garden, rosemary, thyme. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full rock hyssop care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete rock hyssop care guide, or browse the full pet-safe plant library to check another plant before you buy it.