Amsonia 'String Theory'

A spring-flowering perennial that provides foliage and texture interest throughout summer. Light periwinkle blue flowers are produced above dark green, threadleaf leaves. Plant Type:  Perennial Garden Height: 18 - 22 InchesSpread: 32 - 36 InchesFlower Colors:  Blue Foliage Colors:  Green Light Requirement: Part Sun to Sun  Bloom Time: Late Spring - Early SummerHardiness Zones: 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b