Seed Treatment:
• Cold stratification recommended for improved germination
• Mix seeds with moist sand or vermiculite and refrigerate at 35–40°F (1–4°C) for 2–4 weeks
• Alternatively, direct sow in fall to allow natural winter stratification
When to Sow:
• Indoors: Start 4–6 weeks before last frost (if using stratified seed)
• Outdoors: Best sown directly in late fall or early spring
Light Requirements:
• Requires full sun for optimal blooming
Soil Requirements:
• Prefers well-draining, moderately fertile soil
• Tolerates poor or sandy soils
• pH range: 6.0–7.5
Sowing Instructions:
• Surface sow — do not cover with soil; seeds need light to germinate
• Gently press seeds into soil to ensure good contact
• Ideal temperature: 55–65°F (13–18°C)
• Germination in 10–21 days
Watering:
• Keep soil lightly moist during germination
• Once established, poppies are drought-tolerant and prefer dry conditions
Spacing:
• Thin or transplant seedlings to 6–10 inches (15–25 cm) apart
Growing Tips:
• Delicate, papery blooms
• Blooms in late spring to early summer
• Self-seeds readily; allow seed heads to mature if naturalizing
• Excellent for wildflower meadows, cottage gardens, and pollinator habitats
• Attracts bees and butterflies
• Do not transplant — best sown directly due to delicate taproot