4 plants
Ground covers solve the problems that mulch only postpones. They suppress weeds, prevent erosion, and look better than bare soil under trees or along slopes. The best ones flower, so you get color along with function. Creeping phlox turns a slope purple in April. Ajuga covers dry shade that nothing else wants. Sweet woodruff spreads agreeably without becoming a menace.
For gardeners who like to stay ahead.
