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.
Seed Treatment:
• Cold stratification recommended: Place seeds in moist paper towel or sand, seal in a plastic bag, and refrigerate at 35–40°F (1–4°C) for 2–4 weeks.
If seedlings sprout in the fridge, remove them gently and plant immediately.
• Soak seeds in warm water for 4–6 hours before sowing to soften seed coat
When to Sow:
• Indoors: Start seeds 6–8 weeks before last frost
• Outdoors: Direct sow in spring after the danger of frost has passed
Light Requirements:
Use grow lights to maintain 12–16 hours of light per day.
Soil Requirements:
• Prefers well-drained, sandy or loamy soil
• Tolerates poor or dry soils
• pH range: 6.0–7.5
Sowing Instructions:
• Sow seeds ⅛ inch (3 mm) deep — cover very lightly with soil or fine vermiculite
• Keep soil evenly moist but not soggy
• Ideal germination temperature: Use a heating mat to maintain steady temperatures of 21–24°C (70–75°F)
• Germinates in 10–30 days AFTER stratification
• 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 moderately; avoid overwatering
• Once established, plants are drought-tolerant
Spacing:
• Thin or transplant seedlings to 10–12 inches (25–30 cm) apart
Growing Tips:
• Produces tall, feathery spikes of pink to rose-purple flowers
• Excellent for fresh bouquets or dried flower arrangements — retains color well
• Blooms in mid to late summer
• Deer-resistant and attractive to bees and pollinators
• Perfect for xeriscaping, borders, and cut flower gardens
• Requires full sun for best growth and flowering