|The cultivar, 'Puget Blue' is a vigorous upright evergreen shrub with bright blue flower clusters covering the plant in spring. Best suited to dry beds and borders. Excellent large cover for dry banks.
C. impressus has good flower production in full sun. Hardy in zone 7. This plants grows to a height of 8 feet tall and 6 feet wide. Keep soil moist until completely established. Drought tolerant when established. Fertilize in spring just before new growth begins. Little pruning is needed.