Centaurea cyanus ‘Blue Boy’ (Bachelor Button) is one of those easy, cheerful flowers that instantly makes a garden feel more alive. These classic, true-blue blooms look right at home in cottage gardens, pollinator patches, and cutting beds—and they’re just as happy tucked into borders as they are sprinkled through a meadow-style planting. ‘Blue Boy’ is loved for its bright color, tidy habit, and dependable performance, even for first-time flower growers. Plant a little, or plant a lot—either way, you’ll get a generous show of fringed, cornflower-blue blossoms that keep coming when you harvest regularly. Variety Details Botanical name: Centaurea cyanus Plant type: Annual Growth habit: Upright Crop category: Flower seed Flower character: Centaurea cyanus ‘Blue Boy’ (Bachelor Button) is one of those easy, cheerful flowers that instantly makes a garden feel more alive. Product format: Seed packet Sowing & Growing Light: Full Sun Planting season: Spring Starting location: Direct Sow Recorded soil pH: 6.0 - 6.8 Prepare a weed-reduced seedbed for Blue Boy Bachelor Button and use the recorded planting season, depth, and light requirements. Press shallow-sown seed into good soil contact and keep the seed zone from drying during establishment. Thin or transplant only when the growth habit and spacing call for it. Leave enough room for mature width and air movement. Bloom timing and final height can shift with sowing date, climate, soil, moisture, and competition, so use listed figures as planning ranges. Place Blue Boy Bachelor Button where its recorded height and growth habit fit the surrounding planting. Shorter companions can be positioned toward bed edges, while taller stems need room where they will not shade small seedlings too early. If cutting flowers, harvest with clean tools at the stage appropriate to the bloom form. If leaving flowers in place, observe how bloom sequence changes through the season and record which sowing date performed best at the site. Explore related options in our Flower Seeds.
