Beautiful, feathery plumes of creamy-white flowers on tall, elegant stems — perfect for shaded borders, woodland gardens, and moist areas.
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:
- Place seeds on a damp paper towel inside a sealed ziplock bag.
- Refrigerate at 34–40 °F (1–4 °C) for 6–8 weeks.
- If seedlings emerge during stratification, remove them carefully and plant immediately in pots.
Damp paper towel method is optional but effective for monitoring germination.
When to Sow:
Indoors: Start late winter to early spring after stratification.
Outdoors: Sow in autumn to allow natural cold stratification.
Optimum Temperature to Germinate: 59–68 °F (15–20 °C)
Germination Time: 8–12 weeks (56–84 days) after stratification.
Sowing Instructions:
- Sow on the surface of a moist, well-draining seed-starting mix.
- Do not cover seeds — they need light to germinate.
- Use grow lights to maintain 12–16 hours of light per day.
- Mist gently to maintain consistent moisture and HIGH humidity (use a dome)
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.
Post Germination Care:
- Keep seedlings evenly moist — do not allow to dry out.
- When large enough to handle, transplant into individual pots.
- Harden off gradually before planting outdoors after last frost.
Growing Tips:
- Prefers partial shade to full shade.
- Grows best in moist, fertile, well-draining soil.
- Tolerates wet soils and is ideal for shady borders, streambanks, and woodland gardens.
- Mulch to conserve moisture.
- Minimal fertilization needed — compost or balanced fertilizer in spring is sufficient.
- Fully hardy perennial; dies back in winter and regrows each spring.