Refreshing clusters of blue-purple flowers add late season color and attract butterflies, bees and other pollinators to your garden. A low-mounded shrub, its gray-green, lance-shaped foliage is very aromatic. A brush of the hand releases scent into your garden. Its flower clusters resemble clouds of smoke. This easy-care shrub is a good choice for low hedges, shrub borders and mass plantings. This shrub is best planted in well-drained soil and full sun. Many northern gardeners prune it extensively in early spring. Because plants bloom on new growth, pruning does not affect flowering. Ships in 4" pot. Caryopteris clandonensis 'Dark Knight'