About the Bluebeard -
Dark Knight :
The Bluebeard 'Dark Knight', Caryopteris x
clandonensis 'Dark Knight', is a mounding deciduous
broadleaf shrub. It is drought tolerant. It displays
compact, green leaves. Spectacular deep blue flowers
appear in mid-summer.
Cut back after bloom for repeat bloom. This is a
relatively small shrub that will die back to the
ground during the winter and regrow in the spring