Asters are charming, classic fall flowers. Aster 'Purple Dome' is disease-resistant and grows 2 feet tall with purple-violet blooms. You'll find asters in shades of pink, blue, purple or white; they vary in height from 1 to 5 feet. Hardiness also varies, but most common types, including 'Purple Dome', are hardy in Zones 4-8.
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