Cool weather annual that is easily grown in loose, moderately fertile, evenly moist, well-drained soils in full sun. Tolerates some light shade. Tolerates poor soils as long as drainage is sharp. Seed can be sown in the garden a few weeks before the last spring frost date. In warm winter areas, seed may be sown in fall. Seed may also be started indoors about 8-10 weeks before last spring frost date, but this method often does not produce the best plants. Plants perform best in cool summer climates. Apply fertilizer for larger spikes. Plants may sprawl if not promptly staked. Plants may self-seed in the garden unless stems are cut prior to seed formation.