The return of Barberry Trade-Up Days! Got barberry? Japanese barberry (Berberis thunbergii) is an invasive species commonly sold as a landscaping shrub. These shrubs spread from gardens, causing ...

Tosh Mazzone, Penn State Extension, Field and Forage Educator By early May in South-Central Pennsylvania, invasive shrubs have fully leafed out. Scout now to identify shrubs as well […] ...