Seeds require a 30 day “cold stratification” or cold treatment before they will germinate. To start seeds inside, mix the seeds into ½ cup of moist sand (or paper towel) and place in a sealed plastic bag and place in the refrigerator for 30 days before planting. Then start seeds inside 4/1-6/1, 1/8" deep. Days to germination: 14-28. Transplant outside May-July 18" apart.
Plant in full sun or light shade location.
Alternatively, sow seeds outside in late summer, fall or early spring (before March 1st) so they are naturally exposed to the cold. Prepare area by removing weeds and loosen soil surface with a rake. Hand broadcast (sow) seeds evenly over area. Water seeds with a light sprinkle after sowing. From seed, these plants can take 1-3 years to become established and large enough to flower.
For cut flowers, harvest the flowers as they begin to open and place them in water.
