Veronicastrum virginicum | Culver's Root
Culver's Root is a graceful, native perennial. Slender flower spikes are densely packed with small white flowers that open from the top down in mid-summer. Butterflies and other pollinators visit the flowers for nectar. The tall stems provide good winter cover for all kinds of hibernating insect wildlife.
Exposure: Full Sun Bloom Time: Summer Height x Width: 4-6' x 2-4' Hardiness: -40°C to -34°C USDA Zone: 3