Double Columbines in mixed colors were listed for sale in 1804 by Bernard McMahon, the Philadelphia nurseryman who supplied Thomas Jefferson with many plants for Monticello. Various forms and colors of European Columbine were being grown in America by 1700, and doubles were considered the most desirable. This short-lived but self-seeding perennial with flowers of blue, pink, purple, or white will thrive in fertile, cool soils.
Sow seeds indoors 8-12 weeks before last frost date at 70 degrees F. Transplant to 3" pots once they have several true leaves, then harden off and transplant outdoors after last frost. Approximately 25-30 seeds per packet.
|Exposure||Planting Method||Planting Depth||Plant Spacing||Size at Maturity||Zone|
|Full Sun to Part Shade||Transplant||Surface Sow||1-2' apart||1-2'H||4-9|