Purging buckthorn

Purging Buckthorn

©Eli Sagor

Purging buckthorn

An uncommon hedgerow and woodland tree of central and eastern England, Purging buckthorn displays yellow-green flowers in spring, and poisonous, black berries in autumn.

Scientific name

Rhamnus cathartica

When to see

January to December

Species information

Statistics

Height: 10-12m
Common.

About

Purging buckthorn, sometimes simply called 'Buckthorn', is a small, spiny tree of woodland, scrub and hedgerows on chalky soils. It is widespread, but scarce, across lowland areas of central and eastern England. Clusters of small, yellow-green flowers appear in late spring, and bunches of poisonous, black berries ripen in autumn. Purging buckthorn is the main foodplant of the Brimstone butterfly in the areas where it grows, but Alder buckthorn is used as an alternative.

How to identify

Purging buckthorn is a small, spiny shrub. It displays oval, finely toothed leaves and clusters of black berries.

Distribution

Widespread, but scarce, in England and Wales.

Did you know?

Purging buckthorn is so-named because its berries are a strong laxative ('purgative') for humans; they can also irritate the skin.