pollination of pink flowers of centaurea dealbata in may

centaurea dealbata persian whitewash cornflower nature green foliage greenery vegetation flora outdoors plant lush beautiful botany vibrant bright ornamental divided leaf leafage bud florescence inflorescence bloom flower blossom petal perennial park garden flowerbed florets disk scaly bracts peduncle hairy rosy pink mauve violet pseudanthium head basketflower bee insect pollination