Blankets of tiny, sparkling white flowers blooming from late spring to early summer give this hardy perennial its name. After the flowers have wilted, the silvery woolly foliage of the plant remains; it can withstand some of the toughest droughts.
Snow-in-summer (Cerastium tomentosum) offers a solid option for adding botanical beauty to retaining wall crevices and stones in a rock garden. The Cerastium genus belongs to the Caryophyllaceae family and consists of around 200 species[1] of flowering plants.