Delphinium Seeds - Larkspur Giant Imperial Mix


Delphinium consolida

Boasts feathery pink, blue, rose, lavender, and white blooms. Exquisite summer garden feature and dramatic cutting flower. Direct seed or transplant in part shade or full sun, after last frost. Annual. (0.3 Gram Packet) 

  • Planting Information
  • Growing Information
Average Seed / ozSeed / 100' RowAverage Yield / 100' RowDays to Harvest
Planting SeasonIdeal Soil TempSunFrost Tolerance
After Last Frost65-85°FFull/PartFrost Sensitive
Sowing MethodSeed DepthDirect Seed SpacingSeeds Per Packet
Transplant or Direct Seed1/8"6-8"140
Mature SpacingDays to SproutProduction CycleSeed Viability
24-36"10-16Annual1 year

Site Selection


Larkspur giant delphinium is an annual that tolerates full sun to partial shade and average, well-drained soils with moderate moisture.




Direct sow outdoors after the last frost date or start seed indoors 6-8 weeks before the last frost and transplant outdoors once the danger of frost has passed. Optimal soil temperature for germination is 65-85°F. Sow seeds 1/8" deep and 6-8" apart. Seeds will germinate in 10-16 days. Thin seedlings to 24" apart. Flower stalks may need staking. For a succession of blooms, sow seeds every 2-3 weeks.




Harvest cut flowers anytime during the flowering period. Delphinium will readily re-seed if a few flowers are left to mature.