Is Begonia Rex Toxic to Cats?

Yes — Begonia Rex is mildly toxic to cats

Rex Begonias are grown for their stunning patterned foliage in shades of silver, purple, pink, and red. Like all begonias, they contain soluble calcium oxalates. Leaf ingestion is mildly irritating; rhizome ingestion (rare) is more concerning.

Symptoms in Cats

If your cat eats Begonia Rex, watch for these symptoms (onset: Immediate):

Oral burning
Drooling
Vomiting
Kidney irritation (large amounts)

What To Do

Rinse mouth. Monitor at home. Underground parts are most toxic but rarely accessed by pets. Most ingestions cause only mild GI upset.

Cat-Safe Alternatives to Begonia Rex

✓ Calathea Roseopicta ✓ Nerve Plant ✓ Polka Dot Plant

Quick Facts

Scientific Name

Begonia rex-cultorum

Also Toxic to Dogs?

Yes (mild)

Toxic Compound

Soluble calcium oxalates

Toxic Parts

all parts, rhizomes (most concentrated)

Sources: ASPCA Animal Poison Control Center, Pet Poison Helpline. View full Begonia Rex toxicity profile.