Common buckthorn from Europe (Rhamnus cathartica) and glossy/alder buckthorn from East Asia (Frangula alnus syn. Rhamnus frangula) are considered invasive in most states in the US. The designation of “invasive” comes from individual states and it signifies a plant’s ability to crowd out native plants, spread quickly and negatively impact the ecosystem. I see these in many of the properties I visit and a lot of people don’t realize they have it. If you have a small number of these and you don’t w