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Agrostemma Seed ( Annual )

Gardening info:


Agrostemma Githago, often referred to as Corncockle, can be established easily from flower seed, and is known to be a liberal self-sower. Agrostemma seeds will grow in most soils but does particularly well on free-draining, sandy loams.

The flowers form singly on a long stem and sway in the slightest breeze. The flowers are followed by a straw colored flask-like seed head containing large, black, rough textured seed.


Githago Bianca White Corncockle seeds.
LET894 Githago Bianca White Corncockle ( Agrostemma )

A stunning heirloom annual that produces masses of silky, snow-white flowers atop tall, slender stems. The large blooms, often reaching 2 to 3 inches across, appear to float above delicate gray-green foliage, creating a graceful and romantic display that is perfectly suited for cottage gardens, cutting gardens, and wildflower plantings.

Each satiny flower features five broad petals surrounding a delicate center accented with fine markings, giving the blooms a simple yet refined beauty. When planted in drifts, Bianca creates a breathtaking sea of white blossoms that sway gently in summer breezes.

The plant's upright habit and long stems make it particularly valuable as a cut flower, where its elegant blooms lend an airy, natural appearance to bouquets and floral arrangements.

Growing Information:

  • Botanical Name: Agrostemma githago
  • Plant Type: Annual
  • Height: 24–36 inches
  • Spread: 12–18 inches
  • Bloom Season: Late spring through summer
  • Sun Exposure: Full sun
  • Soil: Well-drained average soil
  • Water Needs: Low to moderate

Germination: Sow seeds directly outdoors after danger of frost has passed, or start indoors 4–6 weeks before planting out. Seeds generally germinate within 10–20 days at temperatures of 65–70°F.

Bianca White Corncockle produces long, sturdy stems and elegant blooms that make excellent additions to fresh flower arrangements. Harvest just as the flowers begin to open for the longest vase life.

White-flowered Corncockles are often planted in moon gardens because the blossoms seem to glow in evening light and remain highly visible after sunset.

Cannot ship to AR, SC, RI
  400mg Package ( about 75 ) seeds $2.95

All seed packets listed on this page are in stock and ready to ship.