A fantastic evergreen ground cover plant vinca major produces trailing stems clothed in glossy green leaves from mid45spring through to autumn pretty star45shaped blue45lilac flowers decorate the plant on upright stems tolerating even heavy shade greater periwinkle is a fantastic ground cover plant beneath trees and shrubs or on steep banks where it39s vigorous growth will suppress weeds periwinkles can even be grown in hanging baskets or patio containers for trailing display