Can be sown directly to the garden, or for same season blooms, sow indoors 8 weeks before final spring frost. Sow in rich, moist soil 1/8 inch deep and 1/2 inch apart. Keep warm and moist. Thin as necessary. Harden off and transplant to garden after the final spring frost. Leave plants to reseed at the end of the season for flowers in the same location the following year.