Common buckthorn, a woody shrub/small tree in the Rhamnaceae family, is an understory invasive that produces large amounts of seeds and outcompetes many native species. Additionally, this species is ...

Q: Can you please explain how to distinguish common buckthorn (which is invasive) from alderleaf buckthorn (which I see is listed as a desirable native plant)? The Seek app can distinguish them but it ...

I just moved into a new home and need to get rid of buckthorn trees that seem to have gotten a foothold in my new garden. What is a good strategy to deal with this pesky weed? Common buckthorn grows ...

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.

While spring gardening might not be foremost on residents’ minds during a snowstorm, the state announced Friday it will ban plant sales of certain pampas grasses and two varieties of buckthorn. The ...

"Fall is a great time to scout for invasive plants because they stay green longer than native species," says Hana Kim, Extension educator.