centaurea montana, the perennial cornflower, mountain cornflower, bachelor's button, montane knapweed

flower plant wildflower nature green petal herb meadow grass insect produce prairie blossom invertebrate leaf field alternative background beautiful blooming botany centaurea close closeup colorful conservation environment focus gardening greater herbs jacea knapweed montana perennial cornflower mountain bachelor39aph39s button montane bluet purple thistle summer blue garden flora pink macro spring wild bloom beauty color aster floral