'Grape Crush' produces a large, very round mound with densely packed flowers. We have observed no lodging in our trials, a phenomenal achievement for fall blooming Asters. Very rich, dark purple flowers are produced above dark green foliage in early fall to midfall. A perfect finale to the growing season! Asters perform best in rich, evenly moist soil and full sun. Give them lots of room to grow; good air circulation will help to prevent powdery mildew. Though this cultivar has a bushy, compact habit, it may still require staking. To promote dense growth that is less likely to flop, pinch plants back from late spring until July 4th.Plants should be divided every couple of years in the spring to maintain their health and vigor.
Photo and Information from Walters Gardens