Pet safety
Is Wood Sorreltoxic to cats & dogs?
Oxalis acetosella
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Oxalis acetosella
Is wood sorrel safe for cats and dogs?
Use caution. Wood Sorrel is on the mildly-toxic side of the ASPCA list. Most ingestions are short-lived but unpleasant for the pet; the cost-free fix is a placement they can't reach. 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. ASPCA lists Oxalis species (shamrock plants) as toxic to dogs, cats, and horses due to soluble calcium oxalates. Clinical signs include salivation, vomiting, and in large ingestions, tremors and kidney effects. Culinary use in small amounts by humans is traditional and generally considered safe at low doses (similar oxalate levels to spinach or rhubarb); however, people with gout, kidney stones, or arthritis should avoid it. Never offer to 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 wood sorrel?
ASPCA lists Oxalis species (shamrock plants) as toxic to dogs, cats, and horses due to soluble calcium oxalates. Clinical signs include salivation, vomiting, and in large ingestions, tremors and kidney effects. Culinary use in small amounts by humans is traditional and generally considered safe at low doses (similar oxalate levels to spinach or rhubarb); however, people with gout, kidney stones, or arthritis should avoid it. Never offer to 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 wood sorrel, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate wood sorrel
- Remove any plant material from your pet's mouth and move wood sorrel 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 wood sorrel 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 wood sorrel
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:
- Cucumber — non-toxic to cats and dogs (care guide)
- Lettuce — non-toxic to cats and dogs (care guide)
- Bean — non-toxic to cats and dogs (care guide)
- Pea — non-toxic to cats and dogs (care guide)
Wood Sorrel and pets — frequently asked questions
Is wood sorrel toxic to cats?
Wood Sorrel (Oxalis acetosella) is mildly toxic to cats according to the ASPCA. ASPCA lists Oxalis species (shamrock plants) as toxic to dogs, cats, and horses due to soluble calcium oxalates. Clinical signs include salivation, vomiting, and in large ingestions, tremors and kidney effects. Culinary use in small amounts by humans is traditional and generally considered safe at low doses (similar oxalate levels to spinach or rhubarb); however, people with gout, kidney stones, or arthritis should avoid it. Never offer to 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 wood sorrel toxic to dogs?
Per the ASPCA, Wood Sorrel (Oxalis acetosella) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like wood sorrel is best removed from the floor and low shelves entirely.
What happens if my pet eats wood sorrel?
ASPCA lists Oxalis species (shamrock plants) as toxic to dogs, cats, and horses due to soluble calcium oxalates. Clinical signs include salivation, vomiting, and in large ingestions, tremors and kidney effects. Culinary use in small amounts by humans is traditional and generally considered safe at low doses (similar oxalate levels to spinach or rhubarb); however, people with gout, kidney stones, or arthritis should avoid it. Never offer to 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 wood sorrel, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate wood sorrel?
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 wood sorrel to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to wood sorrel?
If you want a similar look without the risk, good non-toxic swaps include cucumber, lettuce, bean, pea. 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 wood sorrel care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete wood sorrel care guide, or browse the full pet-safe plant library to check another plant before you buy it.