Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sources
cat safety reference
Is Shamrock Plant safe for cats?
Oxalis spp.
Oxalis species, often known as wood sorrel or shamrock plants, are popular indoor plants characterized by their clover-like foliage. They contain soluble calcium oxalates which can cause irritation if ingested by pets.
Good Luck PlantOxalisOxalis spp.Shamrock PlantWood Sorrel
- Light
- Bright indirect light
- Habit
- Clumping or trailing
- Care
- Moderate
Safety status
What this means for your cat
Shamrock plant contains soluble oxalates that, in large amounts, can drop a cat's calcium and rarely cause acute kidney injury. The plant tastes very bitter, so most cats stop after a nibble — small chews tend to cause only mild GI upset, while a serious binge is the dangerous scenario.
What to watch for
Mild exposures: drooling, vomiting, mild diarrhea, and a brief loss of appetite. Larger ingestions can add weakness, tremors, and lethargy as blood calcium drops. Bloody diarrhea is reported. Renal failure is rare but possible after a large meal of the plant.
Time window
GI signs typically begin within a few hours and ease within 24 hours for small exposures. With a large ingestion, low-calcium and renal effects can appear over the first day.
When to call the vet
Call right away if you saw your cat eat more than a leaf or two, or if you see weakness, tremors, repeated vomiting, or any blood in vomit or stool. For a small nibble with no symptoms, call for guidance — it's usually mild but worth a check, especially in kittens or older cats.
First aid at home
Do not induce vomiting at home — Pet Poison Helpline specifically warns against that for cats. Remove any remaining plant material and rinse fragments from the mouth and paws. Then contact your vet or Pet Poison Helpline before doing anything else.
Sources: ASPCA, Pet Poison Helpline.
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
Drooling, vomiting, decreased appetite, and oral irritation.
Escalation note
Ingestion of large quantities may lead to more severe systemic effects due to calcium oxalate crystals. Please contact your veterinarian if you suspect your cat has ingested this plant.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
Oxalis species contain soluble calcium oxalates that are toxic to cats and dogs.
NC State Extension Plant Toolbox
botanical · 94% reliability
Oxalis is a large genus of plants in the wood sorrel family, often grown for their attractive foliage.
Questions about Shamrock Plant
Is the shamrock plant toxic to cats?
Yes, the shamrock plant (Oxalis spp.) is potentially toxic to cats. It contains soluble calcium oxalates, which can cause oral irritation, drooling, vomiting, and decreased appetite if ingested.
What symptoms will my cat show after eating a shamrock plant?
For small exposures, expect drooling, vomiting, mild diarrhea, and a brief loss of appetite — usually starting within a few hours and easing within 24 hours. Larger ingestions can cause weakness, tremors, lethargy, and bloody diarrhea as blood calcium drops; renal failure is rare but possible after a large amount.
What should I do if my cat ate a shamrock plant?
Do not induce vomiting. Remove any remaining plant material and rinse fragments from your cat's mouth and paws, then call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435 right away. Call immediately if your cat ate more than a leaf or two, or if you see weakness, tremors, repeated vomiting, or blood in vomit or stool.
Why is the shamrock plant dangerous to cats — what's the toxic mechanism?
Oxalis plants contain soluble calcium oxalates, which bind to calcium in the body when ingested in large quantities. This can lower blood calcium levels and, in significant exposures, potentially affect the kidneys — though severe systemic effects are more likely after large ingestions than a casual nibble.
Same cat verdict
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