What happens if a dog eats Hydrangea?

If a dog eats Hydrangea, they may experience: Vomiting, diarrhea, lethargy, difficulty breathing, potential cyanide toxicity.

Not Safe

Not SafeVet ReviewedReviewed by Dr Alex Crow BVetMed MRCVSflower

Not Safe for Dogs

Key warning: all parts — flowers, leaves, buds

Is Hydrangea Toxic to Dogs? Yes — All Parts Cause GI Upset

This food is NOT safe for dogs. Keep it away from your pet.

Hydrangeas are toxic to dogs. They contain cyanogenic glycosides that release cyanide when metabolized.

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Warning Signs & Symptoms

Vomiting, diarrhea, lethargy, difficulty breathing, potential cyanide toxicity.

If Your Dog Ate This

Call vet if plant material consumed. Monitor for vomiting and lethargy.

What to Avoid

all parts — flowers, leaves, buds

Preparation & Serving

Keep hydrangea plants away from dogs. Common garden shrub that is easy to access.

Safer Alternatives

Choose dog-safe flowering shrubs like roses or forsythia

Did you know?

Hydrangeas contain cyanogenic glycosides — compounds that release hydrogen cyanide when metabolized. The blue or pink flower color actually correlates with soil pH, not toxin concentration.

Portions & nutrition

Toxic dose (per kg body weight): Cyanogenic glycosides — any significant plant material consumption warrants vet contact
Calories (per 100g): 0
Safe frequency: Never

Source

Source: ASPCA

What You Need to Know

All parts of the hydrangea plant are toxic including flowers, leaves, and buds. Common in many gardens. Keep dogs away from hydrangea plants.

Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic

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If Your Dog Ate This — Act Now

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Frequently asked questions

Is Hydrangea safe for dogs?: No, Hydrangea is not safe for dogs. Hydrangeas are toxic to dogs. They contain cyanogenic glycosides that release cyanide when metabolized.
What happens if a dog eats Hydrangea?: If a dog eats Hydrangea, they may experience: Vomiting, diarrhea, lethargy, difficulty breathing, potential cyanide toxicity.
How much Hydrangea can a dog eat?: All parts of the hydrangea plant are toxic including flowers, leaves, and buds. Common in many gardens. Keep dogs away from hydrangea plants.

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Medical Disclaimer: This information is for educational purposes only. Always consult a licensed veterinarian before making dietary changes for your pet.