Asters excel for the Midwest Numerous asters, including some outstanding cultivars, are available to gardeners today for both cultivated and meadow gardens. Two of the recommended cultivars here are 'Monch' and 'Wonder of Staffa'. One of the most popular cultivars is 'Alma Potschke', a tall, brilliant pink that lights up the fall garden. The best purple is 'Purple Dome' and a good white choice is 'Mt. Everest'. Before trying any new aster, make sure you have the proper conditions necessary for optimum growth.
Asters grow best in full sun with good air circulation.
Overly crowded plantings or those sited in partial shade are susceptible to powdery mildew. Taller species will quickly flop when grown in less than full sun. The soil must be well drained in both summer and winter. Areas that retain winter moisture might promote root rot. Even though this produces sturdier plants, the sprawling types will still need staking.