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 (4–6 hours) before sowing.
• Do not expose seeds to strong light during germination — they prefer darkness or minimal light to sprout.
When to Sow:
• Indoors: Start seeds 6–8 weeks before your last frost date.
• Outdoors: Sow in spring after the danger of frost has passed in warmer climates.
Sowing Instructions:
• Sow seeds ¼ inch (6 mm) deep in seed-starting mix.
• Gently cover with soil — these seeds prefer some darkness to germinate.
• Keep soil evenly moist, not soggy.
• Maintain temperature around 65–70°F (18–21°C).
• Once seedlings emerge, use grow lights to maintain 12–16 hours of light per day.
• Germination typically takes 21-45 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:
• Water regularly to keep soil moist but not saturated.
• Once established, moderately drought-tolerant, but flowering is better with consistent moisture.
Spacing:
• Transplant or thin seedlings to 12–18 inches (30–45 cm) apart.
Growing Tips:
• Prefers well-drained, moderately fertile soil.
• pH range: 6.0–7.5.
• Avoid heavy, waterlogged soils.
• Requires full sun for best flowering performance.
• Tolerates light shade, but blooms may be reduced.
• Produces vibrant daisy-like flowers.
• Ideal for flower beds, containers, edging, and pollinator gardens.
• Deadhead spent flowers to extend blooming season.
• Grown as a tender perennial in USDA Zones 9–11, and as an annual in cooler zones.
• May self-seed in favorable conditions.
More guides at: bloomoutlet.com/seed-guides