Species library · Plants & herbs

Buckthorn: poisonous

Rhamnus cathartica

☠ Poisonous. Do not eat.What to do if poisoning is suspected

Buckthorn is classed as poisonous in the Forage field guide. This page helps you identify it and tell it apart from similar species. It is not a foraging guide. When in doubt, have a find identified by an expert.

If you suspect poisoning, call your local poison control center right away. If someone has trouble breathing, has a seizure or is unconscious, call emergency services. Don't wait for symptoms: with some poisonings they only start hours later. Keep any leftovers of the find, they help identify it.

Usually seen from August to September in the northern hemisphere. Found in Woodland edges, Scrub & hedgerows, Disturbed ground. Can be confused with similar species.

☠ Poisonous
Buckthorn (Rhamnus cathartica)

Photo: (c) Robert Flogaus-Faust, some rights reserved (CC BY) · iNaturalist

When Buckthorn appears

Typical window in the northern hemisphere. The southern hemisphere runs about six months offset.

Where it grows

Buckthorn is usually found in Woodland edges, Scrub & hedgerows, Disturbed ground.

⚠ Look-alikes

Look up Buckthorn in the app

In the Forage app, Buckthorn has a full field guide entry with more photos, key features and the species it can be confused with.

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Buckthorn: common questions

Is Buckthorn poisonous?

Yes. Buckthorn is classed as poisonous in the Forage field guide. Do not eat it. If you suspect poisoning, call your local poison control center right away, or emergency services if it is life-threatening.

When does Buckthorn appear?

Buckthorn usually appears from August to September in temperate northern regions. The exact timing shifts with latitude, elevation and each year's weather.

Where does Buckthorn grow?

Buckthorn is usually found in Woodland edges, Scrub & hedgerows, Disturbed ground.

What can Buckthorn be confused with?

Toxic look-alikes: Alder buckthorn, Wild privet, European holly. Only a confident identification tells them apart. When in doubt, have a find checked by an expert.

One note before you head out

Forage helps you discover and identify wild plants, but identification is never 100% certain. Many edible plants have toxic lookalikes. Never eat anything you find based only on what this app tells you. Always confirm with a field guide, an experienced forager or a local expert. The season score tells you where to look, too: it’s not a guarantee. Mind conservation law and property rights as well.

Species photos via Wikimedia Commons and iNaturalist · full credits