H6 in. x W18 in. Back in stock! This cheerful, low-growing mountain aster hails from western China, and thrives in full sun in rich grit, kept slightly moist in summer. Flowers are a beautiful lilac-purple with a yellow central disc, appearing for several weeks beginning in early summer. Mats of green foliage remain green through winter. Plants shipped are from 3" pot. Hardy to Zone 5.