- 1). Prepare the containers. Fill a series of small containers with seed starting soil eight to ten weeks before the last frost of the year. Plant the tomato seeds about 1/8-inch deep and keep the soil moist. You'll need to provide full sunlight once the seedlings emerge, supplementing natural sunlight with grow lights if necessary.
- 2). Acclimate the seedlings to an outdoor environment. Take them outside during the day and gradually increase the time they remain outdoors until you're leaving them out overnight. Keep the seedlings inside if you're expecting a frost.
- 3). Plant the mature plant outdoors. Pour a liberal mixture of water and liquid fertilizer on the tomato plant on planting day. Avoid disturbing the roots and space the plants two feet apart. Each row should be 2½ to 3 feet apart.
- 4). Fertilize tomato plants regularly. You should initially use a high-nitrogen fertilizer and switch to fertilizers high in phosphorus and potassium once the flowers start to bloom. Fertilizers that are specifically made for tomatoes are commonly available. Tomato plants require 55 to 85 days to bear fruit, depending on the variety.
- 5). Water tomato plants thoroughly. They prefer deep watering so that the roots remain moist instead of frequent, light watering. Keep the leaves dry as much as possible.
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