Hosta Marshmallow Sky will form a medium sized mound of 15"-20" in height, with a spread of up to 30", at maturity. It has stunning white leaves with a dark green margin. Leaves are fairly upright, on an open clump, with very wavy edges. Pale Lavender flowers appear from July and into August, held well ablove the foliage, on scapes of up to 36". Not slug resistant and doesn't particularly like the sun. This is a georgeous looking Hosta, and should be in everyones collection.