Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

Buxus spp.
Boxwood is a popular evergreen shrub often used for hedging and topiary, containing steroidal alkaloids that can cause gastrointestinal distress if ingested. It is considered toxic to both cats and dogs.
Safety status
Dogs
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Boxwood is toxic to dogs (ASPCA) and, unlike cats, dogs are more likely to eat enough leaves to make themselves sick. A few leaves usually means vomiting and diarrhea; larger amounts cause dehydration, and in senior dogs or those with underlying illness Pet Poison Helpline notes that even a single leaf has been linked to severe stomach, respiratory, or heart trouble. Take ingestion seriously.
Vomiting and diarrhea are the most common signs. Watch for dehydration (sticky gums, lethargy) if GI signs are heavy. In older dogs or those with chronic conditions, also watch for laboured breathing, weakness, or any sign of cardiac upset — these are the red flags Pet Poison Helpline calls out for the rare severe presentations.
Pet Poison Helpline guidance indicates that veterinary-induced vomiting is most effective within about 2 hours of ingestion — that's the window you want to act in. Uncomplicated cases typically resolve within 24–48 hours with supportive care.
Call right away for senior dogs, dogs with heart, kidney, or GI disease, or any dog after a large ingestion. Otherwise call if vomiting or diarrhea is severe, bloody, or persists more than a few hours.
Remove any leaves your dog still has and bag a plant sample. Rinse the mouth with a wet cloth. Do not induce vomiting at home — call your vet or Pet Poison Helpline (855-764-7661) first; they decide whether to bring the dog in for veterinary-induced vomiting and activated charcoal within the 2-hour window.
Sources: ASPCA, Pet Poison Helpline.
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.
Dogs — concern notes
Common signs
Vomiting, diarrhea, and potential lethargy.
Escalation note
While typically causing mild to moderate digestive irritation, ingestion of large quantities should be treated as a medical concern. Contact your veterinarian for guidance.
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NC State Extension Plant Toolbox
botanical · 94% reliability
Buxus is a genus of about 70 species in the family Buxaceae, known for its use in formal gardens and its toxic properties if ingested.
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