cluster of purple blue mountain cornflowers, centaurea montana or montane knapweed, bachelors button, natural green background

alive angiosperm asteraceae bachelors beautiful beauty bloom blooming bluet botanical botany bright button centaurea clump cluster colourful compositae delicate flora floral flowering foliage garden green group growing heads horizontal horticulture leaf leaves montana montane mountain natural nature outdoors perennial petal petals plant spring stalk stem summer texture thistle vibrant wildflower