Caryopteris incana 'Blue Billows'
Long lasting, bright blue flower spikes make this Bluebeard selection an eye-catcher all summer long. This deciduous shrub will grow more as a groundcover, and is excellent falling over a wall. In central NC, this species of Caryopteris can die to the ground with sustained cold and wet winter soil. [2'T X 4'W, Zones 7-9]