Tomatoes are versatile vegetables that are popular to grow in containers or home gardens where space is limited. Choose tomato varieties that are dwarf or have a small maturity height to prevent the root ball from overgrowing in the container or creating a top-heavy plant that tips over easily. Container-grown plants require supplemental water to prevent them from drying out quickly, which decreases fruit production.
Purchase a container that has bottom holes, is 12 inches tall and a minimum of 12 inches in diameter. Cut a piece of wire mesh to fit into the bottom of the container. This will prevent the soil from draining out through the holes when watering.
Fill the container to several inches below the top with a well-draining potting soil mixed evenly with peat moss and perlite. Thoroughly mix a slow-release tomato fertilizer into the soil.
Set the tomato plant in a hole 4- to 6-inches deep, so the first set of leaves on the stem are just above the soil level. This will force the plant to produce a strong root system for support.
Water the soil well until it drains out through the bottom holes. Provide water to the tomato 3 to 4 times a week to keep the soil evenly moist. Monitor the soil moisture, as additional water applications may be required during the hot summer months or periods of drought.
Place a tomato cage or stakes with twine around the plant to provide support to fruit-producing branches. Train the plant through the holes as it grows to prevent the branches from bending.
Grow the container tomato in a full-sun location protected from wind. A patio, porch or area next to a building works well, as long as it receives at least eight hours of sunlight each day.