Extremely high temperatures may develop if the covered container is placed in direct sun. The temperature of the germination medium should be 70 degrees F. Higher temperatures may inhibit or prevent germination. The seeds should germinate in 14 to 21 days. As soon as germination occurs, remove the plastic covering and place the seedlings in a sunny south window or under fluorescent lights. For best results, grow seedlings under fluorescent lights.
Plants grown in a sunny window often get tall and spindly because of inadequate light.
A standard fluorescent shop fixture with one cool white and one warm white 40-watt fluorescent tube works fine. The lights should be no more than 4 to 6 inches above the growing plants and should be left on for 12 to 16 hours each day. Transplant the seedlings into plastic cell packs, peat pots or other containers within 10 to 14 days of germination. Harden the plants outdoors for 7 to 10 days before planting them into the garden. Place the plants in a shady, protected area for 2 to 3 days, then gradually expose them to a small amount of sun.