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Is Boxwood Toxic to Dogs?

☠️ ToxicSeverity: Moderate
✅ Cross-checked against veterinary poison-control guidance · Oct 2026 audit
⚠️ Educational info only. If your pet just chewed something and looks unwell, skip the reading and call your vet or Pet Poison Helpline (US): (855) 764-7661.
Yes, boxwood is toxic to dogs. Chewing leaves or fresh hedge clippings releases steroidal alkaloids that cause GI upset and can lead to wobbliness.

Also known as: Common Box, European Box · Buxus sempervirens

What makes it toxic

Buxin-type steroidal alkaloids and irritant volatile oils in the foliage and stems, harmful to the gut and in larger doses the nervous system.

Warning signs to watch for

Vomiting, diarrhea, drooling and appetite loss within a few hours; heavy chewing can cause incoordination and tremors.

What to do if your dog eats it

Take away any leaves or clippings and rinse the mouth. Call your vet the same day if symptoms develop; treat tremors or breathing trouble as an emergency.

Common questions

My dog ate boxwood trimmings from pruning day — what should I do?

Fresh clippings are just as toxic as the living hedge. Note how much was eaten, offer water, and call your vet or a poison hotline for guidance.

How much boxwood is dangerous for a dog?

Small nibbles usually mean mild stomach upset. A larger chew session, especially in a small dog, can progress to neurological signs and needs veterinary attention.

More plants checked for dogs

Pothos☠️ ToxicYes, pothos is toxic to dogs. Chewing any part of the vine releases calcium oxalate crystals thaAloe Vera⚠️ Mildly ToxicAloe vera is mildly to moderately toxic to dogs. The skin and latex layer of the leaf contain coSpider Plant✅ Non-ToxicNo, spider plants are non-toxic to dogs. A dog that nibbles the arching leaves is not at risk ofEaster Lily⚠️ Mildly ToxicEaster lilies are only mildly toxic to dogs — they usually cause stomach upset, not the fatal kiSago Palm☠️ ToxicYes — sago palm is severely toxic to dogs, with a documented fatality rate around 50% when untreBoston Fern✅ Non-ToxicNo, Boston ferns are non-toxic to dogs. Chewing a frond will not poison your dog.

This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.