Dark Knight Bluebeard is a low mounding deciduous shrub with aromatic dull green lace shaped foliage with silvery undersides . Profuse clusters of fragrant deep purplish blue flowers bloom on new wood from summer into fall. Flowers best in full sun and loamy well-drained soils. Tolerates some drought. Type: Shrub Height: 2' - 3' Spread: 2’ - 3' Spacing: 2' USDA Hardiness Zone: 5 - 9 Culture: Full Sun Bloom Color: Blue Season of Interest: Summer , Fall MAINTENANCE NEEDS: Low Maintenance. Prune back stems in spring to promote growth. Crown rot may occur in poorly drained soils. No serious pest or disease issues. LANDSCAPE USES: Accents or Group Plantings, Borders , Naturalized Areas , Wildlife Garden , Foundation Plantings, and Containers. COMPANION PLANTS: White Wood Aster , Lantana, Coreopsis IMAGES : Photo by David J. Stang, Caryopteris x clandonensis Dark Knight 16zz , CC BY-SA 4.0 , (2) Photo by David J. Stang, Caryopteris x clandonensis Dark Knight 3zz , CC BY-SA 4.0 , (3) Photo by David J. Stang, Caryopteris x clandonensis Dark Knight 17zz , CC BY-SA 4.0 , (4) R.A. Dudley Nurseries, Inc. *As plants have ranges in appearance they may not appear as the images shown.