Dense and thorny, Japanese barberry shrubs can be identified by their small ... yellow, purple and green. Some, he said, grow skyward in tall pillars, while others remain small and dwarf-like.

If the only question you’re asking about the plants in your landscape is “Friend or foe?”, step back and look through a ...

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.