blue flowers delphinium trolliifolium in the garden. “bachelor's buttons” in the flowerbed. summer and spring time

flower blue green plant leaf purple petal blossom nature yellow branch lilac spring wildflower bouquet flowers delphinium trolliifolium garden “bachelor's buttons” flowerbed summer time black gem bloom blooming blossom blossoming blue botany bouquet branch bright bud bunch centaurea cyanus clean close closeup color colorful cornflower day design exotic field flora floral flower fresh fruit garden gardening green grow growing herb landscape leaf nature ornamental outdoor petal petals plant season small smelling spring summer sunlight tropical