It has nitrogen containing roots (giving them a yellow color) and spiny branches. Japanese barberry is a highly aggressive invasive species. It produces large amounts of seeds and has the ability to ...

A second prune may only be necessary if you are growing barberry as hedging plants to keep them neat and formal. Deciduous types of barberry are best pruned during dormancy from late winter to ...

For more than two decades, Pia Van de Venne of Murrysville has been working to rid the municipality’s parks of invasive plants including barberry, garlic mustard and Japanese stilt-grass.