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key growing information
How to Grow Bachelor's Button From Seed
How to grow bachelor's buttons (cornflower, Centaurea cyanus) from seed: direct sowing or transplants, thinning, sun and soil, harvest stage and uses.
By Hensley’s Seed Co.
Centaurea (Bachelor's Button, Cornflower) - Key Growing Information
DAYS TO GERMINATION:
Seedlings emerge in about 7–14 days at 60–65°F (16–18°C).SOWING: Sowing in place is recommended. As soon as the soil can be worked, sow thinly, about 6 seeds per foot, 1/4" deep, and cover lightly. Keep the surface moist until seedlings are up, then thin to 6–9" apart once true leaves form. For transplants, start seed 3–4 weeks ahead and move seedlings into cell packs or bigger containers when the first true leaves show. Keep them at a cool 50–55°F (10–12°C) at night for a few weeks so they build a solid root ball.
LIGHT PREFERENCE:
Full sun.
SOIL REQUIREMENTS:
Any well-drained soil; copes with poor to moderately fertile ground.
PLANT SPACING:
2–9" apart.
HARDINESS ZONES:
Grown as an annual.
HARVEST:
For fresh use, cut when flowers are one-quarter to one-half open.
USES:
Cut flowers and edible petals, and a good draw for beneficial insects. Can be dried, though the blooms shrink considerably. Massed in beds and borders, it makes a strong splash of color.
SCIENTIFIC NAME:
Centaurea cyanus
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