beautiful blue and purple centaurea flowers on stems with green leaves on white background. botanical set.

background beautiful bloom blossom blue bluet botanical bud centaurea centaury centory collection colorful cornflower cut decoration design drawn flora floral flower fresh green hand head illustration isolated knapweed leaf loggerhead nature out paint painted painting petal plant purple set spring stalk starthistle stem summer twig watercolor watercolour white wild wildflower