symphyotrichum novae-angliae michaelmas chamomile in bloom, autumn decorative herbaceous perennial

alpinus aster asters autumn autumnal beautiful beauty bloom blossom blue botany bouquet bright chlorophyll colorful design dusting family field flora floral flower fresh frost garden green grow growth leaf leaves meadow medicinal natural nature outdoor perennial petal photosynthesis plant poisonous purple saffron season smelling spring summer violet wild winterer