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Flowers & Plants

Can cats eat hydrangea?

Toxic

Hydrangea safety for cats

Hydrangeas are toxic to cats. Ingestion most often causes vomiting, depression, and diarrhea.

Toxic principle: cyanogenic glycoside

Watch for

  • vomiting
  • depression
  • diarrhea

Sources

Reviewed 2026-07-28

Frequently asked questions

Can cats eat hydrangea?

Hydrangeas are toxic to cats. Ingestion most often causes vomiting, depression, and diarrhea.

What should I do if my cat ate hydrangea?

Contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. Do not wait for symptoms to appear before calling.

What symptoms should I watch for with hydrangea and cats?

vomiting, depression, diarrhea. If you notice any of these, contact your veterinarian.

This page is for informational purposes only and is not veterinary advice. Always consult your veterinarian about your pet's diet and health.

Read our methodology for how every cat food verdict is sourced and reviewed.