What To Plant Instead Of Invasive Periwinkle In Oregon Shade Gardens
A small patch of periwinkle went into an Oregon flower bed sometime back in the 1970s. Fifty years later, its glossy vines have crept past the fence, down the slope, and deep into the woods behind the house. Periwinkle is considered invasive in Oregon, and it quietly smothers the native plants that forests actually need…

