Glossy & Common Buckthorn
Frangula Alnus & Rhamnus Cathartica
Why is it a problem?
Invasive buckthorn quickly disperses its seeds via birds and other wildlife, enabling it to rapidly outcompete native shrubs. Additionally, it serves as a host for both alfalfa mosaic virus and crown fungus, further exacerbating its impact on local ecosystems.
How to identify it?
Common and glossy buckthorn is a shrub or small tree that can reach heights of up to 25 feet. Its dark green leaves are oval-shaped with a subtle serrated edge. In spring, the plant produces yellowish flowers, which give way to small purple berries in the fall. The twigs of buckthorn feature sharp thorns, and the plant is easily identifiable by its distinctive inner orange bark.
How to manage it?
Buckthorn seedlings can be mechanically pulled especially when the soil is moist and the population is small. Mowing can help to prevent seedlings from growing and establishing themselves. You can check out the DNR recommendations for treatment. (link)
Glossy Buckthorn
Common Buckthorn
