Walnut trees not only provide you with nutritious and delicious fruits, but their wood is highly prized for furniture, and they provide great shade for your garden! If you're looking to learn how to grow walnut trees, this DIY gardening guide will give you step by step instructions! English or Persian walnut trees are the most common varieties found throughout North America and they can reach a staggering height of 50 feet! A mature tree will produce 50-80 pounds of walnuts yearly. Before planting your walnut trees, head over to your local nursery to see which variety will grow best