USDA Zone 3 (-40°F) to USDA Zone 8 (10°F).
6" (15 cm)
Weekly during dry spells
Shear back lightly after bloom
Striking variegated foliage complements vibrant blue, hummingbird-attracting flower spikes. Beautiful in rock gardens, at garden's edge or planted with hostas or other perennials. Vigorous plants are an excellent ground cover beneath trees or shrubs.