Dark Knight Caryopteris
Caryopteris x clandonensis 'Dark Knight'
This small, deciduous, shrub-like perennial grows to 3 feet with dark green foliage and a mounded habit. Produces deep purple flowers from summer to frost. It is excellent for borders in perennial beds or along walks and entryways.
USDA Z5 - Cold Hardy -20 to -10F
