Dogs
Generally safeConsulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

Crataegus douglasii
Crataegus douglasii is a deciduous shrub or small tree known for its dark, edible berries and thorny branches. It is generally considered safe for household pets, though its physical structure requires caution.
Safety status
Dogs
Generally safeConsulted references do not classify the plant as toxic for that pet type, while still allowing for mild GI upset if large amounts are chewed.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Black Hawthorn is safe for dogs — ASPCA lists no toxic principle and classifies the plant as non-toxic to dogs. The thorns are a bigger practical concern for a curious dog than the plant's chemistry.
Sources: ASPCA.
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
None typically expected from ingestion of plant material.
Escalation note
While non-toxic, consuming large amounts of fibrous plant material may cause mild gastrointestinal upset. Contact your veterinarian if you observe persistent vomiting or lethargy.
Bring it home
Black Hawthornis generally pet-safe in ordinary household exposure. If you’d like one for your space, here’s a starting point.
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NC State Extension Plant Toolbox
botanical · 94% reliability
Crataegus douglasii is a native shrub or small tree with dark purple to black fruit.
Black Hawthorn (Crataegus douglasii) is generally considered non-toxic to dogs. No toxic principles are documented for this plant, and ingestion of the berries or plant material is not expected to cause poisoning.
The berries are non-toxic, but eating large amounts of fibrous plant material can cause mild gastrointestinal upset such as vomiting or loose stools. If symptoms persist, contact your veterinarian.
No toxic symptoms are expected, but monitor your dog for signs of GI upset — vomiting, diarrhea, or lethargy — especially if a large amount was consumed. The main physical hazard of Black Hawthorn is its thorny branches, which can scratch the mouth or paws.
Yes — while the plant material itself is non-toxic, Black Hawthorn's sharp thorns pose a physical injury risk. Check your dog's mouth, paws, and face for puncture wounds or embedded thorns if they've been chewing or pushing through the shrub, and see a vet if a thorn appears lodged in tissue.
Same dog verdict

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