Family: Apocynaceae, Dogbane view all from this family
Description Introduced. A common garden ground cover with evergreen leaves and purple flowers.
Flowers: 1-2" (2.5-5 cm) wide; purple to blue, 5 petals.
Leaves: opposite; lower leaves heart-shaped, upper leaves elliptical; shiny, dark green, mottled with white or yellow in some cultivars.
Height: 8-18" (20-45 cm); trails along ground.
Habitat Shady, damp woods, woodland edges, roadsides, disturbed sites.
Range Europe native; naturalized in the United States, from Massachusetts to Texas and several of the western states.
Discussion Bigleaf Periwinkle is a popular evergreen ground cover that tolerates shady situations, and as such has been heavily planted. It spreads easily into natural and disturbed habitats and is considered an invasive or noxious plant in many states.