Common Buckthorn

(Rhamnus cathartica)
*Established in Michigan*
Report this species:
Use the Midwest Invasive Species Information Network (MISIN) online reporting tool
- Or - download the MISIN smartphone app and report from your phone - http://www.misin.msu.edu/tools/apps/#home
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
Identification:
- Deciduous small tree or shrub – can reach 25 feet tall
- Leaves are dark- green, oval and slightly toothed
- In spring, small, yellow-green, 4-petaled flowers grow in clusters of 2-6 at the base of leaves
- Small, purple to black fruits ripen in the fall
- Twigs often have a single, sharp thorn at their tip
- Distinctive orange inner bark
Habitat: Common buckthorn can be found in disturbed and undisturbed areas including roadsides, pastures, old fields and woodlots.
Native Range: Europe and Asia
U. S. Distribution: East Coast and Midwest, also in limited areas of California and Oregon.
Local Concern: This invasive plant spreads quickly through seeds distributed by birds and wildlife and crowds out native shrubs and understory plants. It is a host for alfalfa mosaic virus and crown fungus, and may be a possible host for the soybean aphid.
MORE INFORMATION:
Common Buckthorn Invasive Species Alert - Printable PDF
Best Control Practice Guide for Common Buckthorn - This document provides in-depth information about common buckthorn in the state of Michigan including identification, distribution, management and control options.