Rocky Knoll Farm
This compact mounded shrub has striking blue-violet flowers. Blossoms have wavy edges and there are about 20 per dome-shaped truss. Expect mid-season blooms, and grows in partial to full sun. Hardy to -10° F, this dwarf hybrid grows to only about about 2' tall so it makes an excellent addition to a small space or rock garden. The foliage responds to weather variations with spotting, which is normal.