Bachelor's Button Seeds (Centaurea cyanus). Also known as Cornflower, Bluebottle, and Bleuette, Bachelor's Button is an easy-to-grow, self-seeding, cool-season annual with bright blue flowers that has been popular in America since colonial times. Philadelphia nurseryman Bernard McMahon offered it in five colors in 1804 -- purple, red, blue, white, and striped -- and Jefferson included "French pink bleuette" in an 1806 list of flowers. Jefferson-documented: This plant was documented by Thomas... - Bachelor's Button Seeds (Centaurea cyanus). |