a stem of caryopteris x clandonensis 'dark knight' blossoms

background bloom blooming blooms blossom blossoms blue blurred bush caryopteris cluster clusters day delicate flower flowering flowers frilly green mauve natural nature outdoors outside perennial plant purple shrub single stem summer sunny sunshine upright sunlight anthers group grouping solitary one clandonensis night mist bluebeard dainty showy cheerful cheery small horticultural horticulture botanical isolated dark bluish-purple