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Flowers · tender annual
Impatiens from seed
Impatiens walleriana
- Germination temperature
- 70 to 75°F (21 to 24°C)
- Sowing depth
- surface
- Days to germinate
- 10 to 14 days
- Light
- Needs light: press onto the surface
- Before sowing
- Nothing needed
- Start indoors
- 8 to 10 weeks before planting out
- Plant out
- 1 to 2 weeks after the last frost
Your dates from your last frost Seed not coming up?
Sowing
Surface-sow 8 to 10 weeks before planting out at 70 to 75°F (Iowa State). The seed is slow and needs light.
Care and transplanting
Plant out after frost into shade or part shade. Keep moist.
Problems
Seedlings are fragile; keep humidity high until they grow. Impatiens downy mildew can kill bedding plants; choose resistant types.
Saving seed
Hybrids are not reliable from saved seed.