Astilbe 'Color Flash' Hardy in USDA zones 4 through 11. In zones 5 and below, add some extra mulch (wood, chopped leaves, etc.) around the plants if snow-cover is not expected. In warmer climates, make certain that it does not dry out over winter/cooler months.
Aster New England aster bears loads of pink, blue, purple, and white flowers that are great in the vase or in the garden. Butterflies love it -- and we do, too. Name: Aster novae-angliae Growing Conditions: Full sun and well-drained soil Size: To 5 inches tall Zones: 4-8