Seeds require a “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 6-8 weeks before planting May-July. Alternatively, sow seeds outside in late summer, fall or early spring (before March 1st) so they are naturally exposed to the cold. Plant in full sun location. 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. We also recommend sowing annual plant seeds to fill in the area until the native plants get established. Try Blanket Flower, Hopi Red Dye Amaranth, Dyer’s Coreopsis, Calendula, or Cosmos. Seed packet covers 100 sq ft.
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Hand harvest seeds after plants have flowered and seeds begin to mature but before the seeds fall off of the plant. Or, cover immature seed heads with a paper bag and securely wrap the paper around the plant stem with string. When seeds are mature, cut stem, invert paper bag, and shake to dislodge seeds from plants.