Seed Treatment:
• Cold stratification: Place seeds in moist sand or paper towel, seal in a plastic bag, and refrigerate at 35–40°F (1–4°C) for 2–4 weeks
• Seeds are very small — do not bury deeply
When to Sow:
• Indoors: Start seeds 6–8 weeks before last frost after stratification
• Outdoors: Sow directly in late fall or early spring for natural stratification
Light Requirements:
• Grows best in full sun to partial shade
• More compact and floriferous in full sun
Soil Requirements:
• Prefers well-drained, moderately fertile soil
• Tolerates sandy or rocky soils
• pH range: 6.0–7.5
? Sowing Instructions:
• Surface sow or press lightly into soil — seeds need light to germinate
• Use grow lights to maintain 12–16 hours of light per day.
• Keep soil evenly moist during germination
• Ideal temperature: 60–70°F (16–21°C)
• Germinates in 14–40 days
Humidity: Use a humidity dome or clear cover to maintain consistent moisture during germination. Open the dome BRIEFLY once per day to allow fresh air in and reduce mold risk. Remove the dome entirely once seedlings emerge.
Watering:
• Keep soil moist during germination
• Once established, water moderately; drought tolerant when mature
Spacing:
• Thin or transplant to 12–15 inches (30–38 cm) apart
Growing Tips:
• Produces charming, 5-petaled blooms
• Blooms from early to mid-summer
• Excellent for cottage gardens, borders, and pollinator-friendly landscapes
• Attracts bees and butterflies
• Hardy in USDA Zones 5–8