Veronicastrum virginicum, Culver's root

Culver's root
Veronicastrum virgincium

Hardiness: Zones 3 to 8
Plant type: Herbaceous perennial
Height: 4- 7'
Spread: 2- 4'
Sun: Full sun
Water: Medium to wet
Bloom time: June to August
Bloom color: White, very pale blue
Soil: Moist, well-draining, rich to average, slightly acidic soil.

Notes: Long-tongued and short-tongued bees are frequent visitors, including honeybees, bumblebees, Mason bees, Green Metallic bees and Masked bees.

More information on this plant here.