Rhubarb — (c) Rasbak, some rights reserved (CC BY-SA)
Photo by (c) Rasbak, some rights reserved (CC BY-SA)iNaturalistCC BY-SA
Pet safety reference

Rhubarb

Rheum rhabarbarum

Rhubarb is a perennial vegetable known for its edible stalks, but its leaves contain high levels of soluble oxalate crystals that are harmful if ingested. It is widely grown in gardens for culinary use but requires caution regarding pet access to the foliage.

Pie PlantRheum rhabarbarum
Light
Full sun to partial shade
Habit
Clumping herbaceous perennial
Care
Moderate

Safety status

Cats & Dogs

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

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.

Catsconcern notes

Common signs

Drooling, vomiting, diarrhea, tremors, and potential kidney damage due to calcium oxalate crystals.

Escalation note

Ingestion of leaves can be serious. Please contact your veterinarian or an animal poison control center immediately if ingestion is suspected.

Dogsconcern notes

Common signs

Excessive salivation, abdominal pain, vomiting, lethargy, and potential renal failure in severe cases.

Escalation note

The leaves are considered toxic to dogs. Seek veterinary attention promptly if your dog has consumed any part of the plant.

Safer alternatives

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

Rhubarb contains soluble calcium oxalates which can cause kidney failure in pets.

NC State Extension Plant Toolbox

botanical · 94% reliability

Open source

Rheum rhabarbarum is a herbaceous perennial known for its edible stalks, though leaves are toxic.

cats safety pageMy cat ate Rhubarbdogs safety pageMy dog ate Rhubarb

Same safety verdict

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