Snow-in-summer plants get their common name from their blooming habit. They bloom profusely in the early summer, and the flowers are a pristine white—suggesting a fresh snowfall—with little notches cut into them. But their name does not tell the whole story. This ground cover is just as admired for its delicate, woolly, silver leaves as for its charming flowers. The plants grow to be 6 to 12 inches tall, with a width of 12 to 18 inches. They spread quickly by reseeding themselves and by producing runners when grown in conditions favorable to them.