The Sphaeralcea Shell Pink, 'Sphaeralcea hybrid', a Proven Selections plant, is a very vigorous trailing plant with a silvery foliage and single pink flowers, similar to Mallow. They are great in baskets and pots. They can spread up to 36 inches. The plant is vase-like and the stems originate from the center of the plant. For zones 9-11, this plant can also be a perennial. ... get more information