Direct sow 1/2” deep very early in the spring or in the fall to overwinter plants for early blooms. Thin plants to 6-12”. Prefers 60-70°F soil temp. Germination in 10-20 days.
Collect seeds from seed heads that are fully dry. Shell by hand or by dancing, winnow to clean. Finish air-drying if necessary before sealing in airtight container. Some cross-pollination may occur, isolate from varieties of the same species by 1/4 mile.