You could try crossing, but then it would no longer be a native plant.
Germination for the native larkspurs usually requires cold, moist stratification, though some may germinate without. Cold moist stratification: plant in seedlng tray in moist medium, cover and store in fridge for 60 to 120 days. Seed should germinate when taken out and placed in a warm area.
Judy_B_ON
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