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    How to Grow Perennial Cornflower — Centaurea montana

    Centaurea montana–known as perennial cornflower–bears thistle-like flowers in shades of purple, blue, white, or pink. Perennial cornflower is also called mountain knapweed, and mountain bluet. It is part of the Centaurea genus which also includes the annual cornflower called bachelor’s button, Centaurea cyanus, as well as Dusty Miller, Centaurea gymnocarpa. Centaurea montana–perennial cornflower–is also called […] More