Caryopteris Dark Knight is a compact, attractive deciduous perennial that requires full sun and is an overall low maintenance plant. It has showy flowers and fragrant foliage. ‘Dark Knight’ attracts butterflies, bees and other beneficial insects into the landscape. The bloom is a dark blue, purple color and will flower in the late summer when many shrubs are no longer in bloom.
Soil: Prefers a well-drained/loamy soil with a neutral pH
Height at maturity: 1.5-2 feet
Spread at maturity: 1.5-2 feet
Uses in the landscape: perennial border, low hedge, mass planting
Bloom time: summer-late fall
Pairing plants: Echinacea, buddleia or miscanthus