Agrostemma gracilis (Slender Corncockle)

Seed Treatment:

Pre-soak seeds in room temperature water for 4–6 hours before sowing.You can sow seeds directly in soil or start indoors. Alternatively, seeds can be started in a damp paper towel inside a plastic bag—check daily and plant as soon as seedlings emerge.

Best Time to Sow:
Indoors: 4–6 weeks before your last expected frost.
Outdoors: After last frost when soil is workable.

Optimum Temperature for Germination:
15–20°C (59–68°F)

Germination Time:
7-35 days

How to Sow:

  • Sow seeds ¼ inch (6 mm) deep in well-draining soil.
  • Lightly cover with soil and water gently.
  • Maintain even moisture but avoid waterlogging.

Light Requirements:
Full sun (minimum 6 hours of sunlight daily).

Post Germination Care:

  • Once seedlings develop 2–3 sets of true leaves, thin to allow 20–30 cm (8–12 inches) spacing.
  • Gradually harden off indoor-grown seedlings before transplanting outside.

Growing Tips:

  • Prefers well-drained soil; tolerates poor to moderately fertile soils.
  • Minimal fertilizer required.
  • Remove spent flowers to encourage continuous blooming.
  • Excellent for wildflower meadows, cottage gardens, and cut flowers.