Fill nursery flats half full with rich, indoor potting soil. Add peat moss on top of the potting soil, filling the flats all the way to the top. Do not pack down the soil.
Make furrows 1 inch apart within the flats. Use the eraser end of a pencil and draw it across the surface of the soil to make a small furrow for the seeds.
Plant seeds in the prepared furrows 1/2 inch apart. Sprinkle peat moss over the seeds so they are lightly covered.
Water the newly planted flats of seeds immediately after planting. Use a watering can with a rose tip to diffuse the water. Do not allow the soil to dry out. Check the flat frequently and water as needed to keep the growing medium moist but not wet.
Ensure the seedlings have good ventilation and air circulation when they germinate in approximately 25 to 30 days. They will thrive with a mild level of air circulation, but not an overly windy spot. Run an electric fan in the room where they are growing if they are growing indoors. Protect them from high winds if they are growing outdoors.
Fertilize bi-weekly beginning when the seedlings are 2 inches high, using liquid house plant food.
Transplant into individual 2-inch pots when the seedlings begin to crowd each other in the flat.