Nut trees are treasured for producing meaty, nutrition-packed snacks and for other benefits as well. Nut trees add beauty to home landscapes and provide shade. When selecting the best nut trees for home gardeners, first make sure the tree will grow in your hardiness zone. Next, consider the tree's mature height and spread. While some nut trees, like the Hardy Almond, only reach about 20 ft. tall, others grow 40 ft. or taller. Almost all nut trees perform best when they are grown in full sunlight, or six or more hours of direct sunlight daily. Other considerations when selecting nut trees are their growth rate, habit or shape and pollination requirements.