Pet safety
Is Common Wormwoodtoxic to cats & dogs?
Artemisia absinthium
Toxic
Quick verdict — at a glance
- Toxic to cats?
- Yes — toxic
- Toxic to dogs?
- Yes — toxic
- ASPCA classification
- Toxic to pets · botanical name Artemisia absinthium
Is common wormwood safe for cats and dogs?
No — common wormwood is toxic to cats and dogs. Keep it well away from any pet that chews plants; reactions can be significant. 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. Artemisia absinthium contains the monoterpene thujone and the bitter glycoside absinthin. The North Carolina Extension Plant Toolbox lists it as a problem for both cats and dogs, and veterinary toxicology sources note that ingestion of significant quantities can cause vomiting, diarrhoea, neurological signs including tremors or seizures, and liver damage. Thujone acts as a GABA-A receptor antagonist. Keep pets away from this plant.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes | Toxic to pets |
| Dogs | Yes | Toxic to pets |
What happens if a pet eats common wormwood?
Artemisia absinthium contains the monoterpene thujone and the bitter glycoside absinthin. The North Carolina Extension Plant Toolbox lists it as a problem for both cats and dogs, and veterinary toxicology sources note that ingestion of significant quantities can cause vomiting, diarrhoea, neurological signs including tremors or seizures, and liver damage. Thujone acts as a GABA-A receptor antagonist. Keep pets away from this plant. 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 common wormwood, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate common wormwood
- Remove any plant material from your pet's mouth and move common wormwood 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 common wormwood 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 common wormwood
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)
Common Wormwood and pets — frequently asked questions
Is common wormwood toxic to cats?
Common Wormwood (Artemisia absinthium) is toxic to cats according to the ASPCA. Artemisia absinthium contains the monoterpene thujone and the bitter glycoside absinthin. The North Carolina Extension Plant Toolbox lists it as a problem for both cats and dogs, and veterinary toxicology sources note that ingestion of significant quantities can cause vomiting, diarrhoea, neurological signs including tremors or seizures, and liver damage. Thujone acts as a GABA-A receptor antagonist. Keep pets away from this plant. 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 common wormwood toxic to dogs?
Per the ASPCA, Common Wormwood (Artemisia absinthium) is toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like common wormwood is best removed from the floor and low shelves entirely.
What happens if my pet eats common wormwood?
Artemisia absinthium contains the monoterpene thujone and the bitter glycoside absinthin. The North Carolina Extension Plant Toolbox lists it as a problem for both cats and dogs, and veterinary toxicology sources note that ingestion of significant quantities can cause vomiting, diarrhoea, neurological signs including tremors or seizures, and liver damage. Thujone acts as a GABA-A receptor antagonist. Keep pets away from this plant. 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 common wormwood, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate common wormwood?
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 common wormwood to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to common wormwood?
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 common wormwood care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete common wormwood care guide, or browse the full pet-safe plant library to check another plant before you buy it.