Cats
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.
Sources
cat safety reference
Is Black Hawthorn safe for cats?
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.
Black HawthornCrataegus douglasiiDouglas Hawthorn
- Light
- Full sun to partial shade
- Habit
- Shrub or small tree
- Care
- Low
Safety status
What this means for your cat
Black Hawthorn is safe for cats — ASPCA lists it as non-toxic to cats with no toxic principle identified. A cat that chews on a leaf, flower, or berry isn't expected to need treatment.
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.
Cats — 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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Source evidence
ASPCA Toxic Plant List
toxicology · 99% reliability
The Black Hawthorn is listed as non-toxic to cats and dogs.
Questions about Black Hawthorn
Is Black Hawthorn toxic to cats?
Black Hawthorn (Crataegus douglasii) is considered non-toxic to cats. It is classified as generally safe, meaning ingestion of plant material is not expected to cause poisoning.
What happens if my cat eats Black Hawthorn berries or leaves?
No toxic symptoms are expected from a cat eating Black Hawthorn. However, consuming large amounts of fibrous plant material may cause mild gastrointestinal upset such as vomiting or loose stools.
What should I do if my cat ate a lot of Black Hawthorn?
Because Black Hawthorn is non-toxic, a small nibble requires no emergency action. If your cat ate a large quantity and shows persistent vomiting or lethargy, contact your veterinarian.
Are the thorns on Black Hawthorn dangerous to cats?
Yes — the physical thorns on Black Hawthorn branches pose a puncture or scratch risk to curious cats regardless of the plant's non-toxic status. Keep cats away from the thorny branches to avoid injury to paws, mouth, or eyes.
Same cat verdict
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