Genus: Culver's root

Veronicastrum

Photo/Illustration: 
Barry Glick
Culver's root (Veronicastrum)
ver-on-ih-KAS-trum
Scrophulariaceae
These erect perennials have multiple, tapering, soft spikes of white to pale pink or bluish purple that open with conspicuous stamens and look like elegant, living candelabras. The blooms add a vertical accent to a mixed border or wild garden in midsummer to early autumn. The lance-shaped, whorled leaves are deep green and remain attractive through the season. Both species in this genus occur in prairies, meadows, open woodlands, and grassy mountains.  
Noteworthy characteristics:  V. virginicum is a widespread native of Eastern North America.
Care:  Grow in moderately fertile, moist soil in full sun or partial shade.
Propagation: 

Sow seed in a cold frame in autumn. Divide in spring or fall.

Problems: 

Downy mildew, powdery mildew, leaf spot.

Species, varieties and clutivars for genus Veronicastrum

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Culver's root
Veronicastrum sibiricum
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Culver's root
Veronicastrum virginicum