Glossy buckthorn, a small, woody tree from the Rhamnaceae family, is an understory invasive that produces large amounts of seeds and outcompetes many native species. It’s also both sun and shade ...

Here’s how to identify it and kill it. Common buckthorn, the most widely-found variety, has glossy green leaves with ...

The Pennsylvania Department of Agriculture has added ravenna grass, glossy buckthorn and common buckthorn to a list of noxious weeds — plants that cannot be legally sold or cultivated in the state.