For optimal germination rates, initiate seed propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.
Keep soil evenly moist during germination. DO NOT LET IT DRY OUT—once seeds begin absorbing water (imbibition), drying can kill the seed embryo, and even brief dryness after sprouting can kill seedlings.
Seed Treatment:
• Soak seeds in warm water for 4–6 hours before sowing.
When to Sow:
• Outdoors: Direct sow in early spring as soon as the soil can be worked, or in fall in mild winter areas for earlier blooms.
• Indoors: Start seeds 4–6 weeks before your last frost date if you want earlier flowers.
Sowing Instructions:
• Surface sow — press seeds gently into the soil but do not cover, as light aids germination.
• Use grow lights to maintain 12–16 hours of light per day.
• Keep soil consistently moist but not waterlogged.
• Ideal germination temperature: Day: 18–21 °C (65–70 °F) - Night: 12–15 °C (54–59 °F)
• Germination usually occurs within 14-28 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 and establishment.
• Once established, water moderately — do not let soil completely dry out.
Spacing:
• Thin or transplant seedlings to 6–12 inches (15–30 cm) apart.
Growing Tips:
• Prefers full sun to partial shade.
• In hotter climates, partial shade will help prevent wilting.
• Prefers well-draining, moderately fertile soil.
• pH range: 6.0–7.5.
• Tolerates a variety of soils but dislikes soggy conditions.
• Produces charming white flowers with purple-blue spots on each petal in late spring to early summer.
• Ideal for wildflower meadows, borders, rock gardens, and containers.
• Great for pollinator gardens — attracts bees and butterflies.
• Grows as a hardy annual in most climates.
More guides at: bloomoutlet.com/seed-guides