Plantingtomatoesdeep in the ground allows them to develop extensive root systems that lead to healthy plants and large harvests. Keep reading to learn more about howdeeptoplant your tomatoplants. And howdeep should you plant? We’re going to break it down. You may have also heard of the trick toplant your tomatoes sideways.Why You Should PlantTomatoesDeeply. Most plants should be planted in a hole slightly larger than the size of the pot they came in. Howtoplanttomatoes in the ground with the deepplanting technique. This is the best way toplanttomatoes to make sure your tomatoplants build a great root system to support the plant all season long. 2. Planting the Tomatoes: Before planting, I gently tease the roots if they’re a bit tangled. Then, I plant the tomatoesdeep for strong root development. I remove lower leaves to prevent soil-borne diseases. Finally, I water, mulch, and support the plants. The number ONE RULE, when it comes toplantingtomatoes, is toplant them DEEP. When you buy tomatoplants, buy kind of tall ones. Take off a few rows of leaves, starting at the bottom of the plant working upwards. Planter Dimensions and Vine Support. Typical planter boxes tend to be extremely wide, but not deep. Once tomatoplants are positioned within the growing medium, they must have a minimum depth of 12 inches beneath them for healthy root growth. HowDeeptoPlantTomatoes. When setting your tomato transplants in the garden, you can bury up to two-thirds of the stem underground. That means if you have a 10 inch tall tomatoplant, you would plant it so only the top 3-4 inches remain above the soil surface. Ideal Planting Depth. So, howdeep is too deep? The sweet spot is 2 to 3 inches deeper. It sounds simple, but this small adjustment can significantly impact your tomato’s growth. When you bury the stem, you allow the plant to sprout additional roots along the buried portion. Howdeeptoplant for strong root development. Which companion plants can help deter pests and boost growth. This guide dives into all of that and more. This way, you can enjoy a thriving tomato harvest all season long! Let’s get started! Tomato Spacing and Planting Depth. Burying your tomatoplantsdeep into the soil helps them grow better because tomatoes form roots all along any buried portion of the stem—if you look closely you will see tiny bumps, which are the roots before they develop.