In May, sow 2–3 seeds per cell in 72-cell plug flats, 3–4 seeds/in. in 20 row flats, or in outdoor beds ¼" deep. Seedlings should be ready to transplant in 4–6 weeks. Space 18–24" between plants, in rows 30–36" apart. To maintain steady growth, the crop should be well fertilized and irrigated in dry weather.