Is Oxalis Toxic to Dogs?
Also known as: Purple Shamrock, False Shamrock, Wood Sorrel, Oxalis triangularis · Oxalis triangularis
What makes it toxic
Soluble calcium oxalates absorbed into the bloodstream after chewing. They irritate the gut at low doses and bind calcium and injure kidneys at high doses.
Warning signs to watch for
Drooling, vomiting, diarrhea and appetite loss within hours. Significant ingestion can bring tremors, weakness, increased thirst and abnormal urination.
What to do if your dog eats it
Take away remaining leaves, note the amount eaten and call your vet the same day. Tremors, collapse or a dog that stops urinating needs emergency care now.
Common questions
My dog grazes the potted shamrock every day — is that serious?
Yes, repeated doses accumulate risk beyond simple stomach upset. Move the plant out of reach and call your vet about the ongoing habit.
Why is oxalis rated worse than other houseplants?
Its oxalates are soluble, so they enter the bloodstream, unlike the insoluble crystals in pothos or monstera that stay in the mouth.
Is wood sorrel in the lawn the same plant?
Same genus, same compounds. Dogs grazing lawns with wood sorrel face the same toxicity as the potted version.
More plants checked for dogs
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.