Home / Seed database / Delphinium
Flowers · perennial
Delphinium from seed
Delphinium spp.
- Germination temperature
- 65 to 70°F (18 to 21°C)
- Sowing depth
- cover lightly
- Days to germinate
- 10 to 20 days
- Light
- Either; light is not critical
- Before sowing
- Nothing needed
- Start indoors
- 10 to 16 weeks before planting out
- Plant out
- at the last frost
- Spacing
- 12 to 18 in (30 to 45 cm)
Your dates from your last frost Seed not coming up?
Sowing
Johnny's: sow 10 to 16 weeks before planting out; direct sowing is not recommended. Germination may be spotty (Iowa State).
Care and transplanting
Stake tall spikes; zones 3 to 7.
Problems
Slugs and powdery mildew are the usual problems.
Saving seed
Collect dry pods; fresh seed germinates best.