The ‘Dark Knight’ Caryopteris has deep purple or blue flowers. The colors are very dramatic. This is a low, mounded shrub that is slightly aromatic. Cut the plant back in the winter. Very attractive to butterflies.
Bloom Time: Summer.
Growth Habit: Low, Mounded, 2′ in height.
Foliage: Gray-Green.
Sun/Shade: Sun.
Hardiness Zones: 6-9.
