delicate blue flowers(erigeron)

aster asteraceae background beautiful beauty bloom blooming blooms blossom blossoming blossoms blow blue blur blurred botanical botany bright cheerful closeup colors compositae daisy details erigeron fleabane flimsy float flora floral floret flourish flourishing flower flowering flowers frail green horizontal horticultural horticulture lavenderblue lilac macro mauve mountains natural nature nobody ornamental outdoors outside perennial petals phytology plant plants purple selective species speciosus spring stem summer sun upright upward venomous violet whorl wildflower wort yellow