To grow tomatoes in your garden, you will need to select a sunny spot with well-draining soil. You can start your tomato plants from seeds or purchase established seedlings from a nursery. Plant them in the ground or in a container with rich, nutrient-dense soil, and water them regularly, keeping the soil moist but not waterlogged. As they grow, support them with stakes or cages to keep the fruit off the ground and prevent it from rotting.