Cornflower (Centaurea Macrocephala) – If you have a wildlife garden and enjoy attracting bees, butterflies and birds, start this Cornflower seed for this tall, showy, yellow perennial. This yellow Cornflower is commonly known as Armenian Basket Flower or Giant Knapweed. The clump-forming plant has shaggy, thistle-like flowers that are excellent for cutting and drying. Preserve the flower heads for dried arrangements. Start these flower seeds for sunny sites with well-draining soil, and since it’s tall and large, place it toward the back of the border. Growing Cornflowers from seed is rewarding and enjoyable as the wildlife will often visit the showy, brilliant yellow blooms. Start the Centaurea seeds indoors in late winter. Cover the pots or trays with clear plastic wrap to ensure adequate moisture. Remove the plastic when sprouts emerge.
Flower Specifications
Season: Perennial
USDA Zones: 2 – 9
Height: 36 – 48 inches
Bloom Season: Mid summer to early fall
Bloom Color: Yellow
Environment: Full sun
Soil Type: Clay, sandy, normal loam
Planting Directions
Temperature: 68F
Average Germ Time: 14 – 28 days
Light Required: Yes
Depth: 1/4 inch
Sowing Rate: 10 seeds per plant
Moisture: Keep seeds moist until germination
Plant Spacing: 24 inches
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