Creeping thyme is a very short flowering ground cover. It looks especially good spilling over a stone wall, as in this picture. Learn more at http://landscaping.about.com/od/herbplants/p/creeping_thyme.htm
Weed-smothering groundcovers are ideal for troublesome spots in your yard where grass won't grow (or you don't want to mow). See some of the Costa Farms' gardening experts' top picks for easy-care, colorful groundcovers.