Many nut trees have aesthetic appeal and are used for landscaping in order to give outdoor areas a more natural and appealing look. A number of nut trees also play a large role in the ecosystem of a given area, such as providing sources of food for a variety of animals. Nuts usually have a very high oil content and are thus often a good source of energy for animals and people alike.
Nut trees come in a variety of forms and not all nut trees produce edible nuts. Types of nut trees include the American hazelnut, black walnut, cherrybark oak, gobbler sawtooth oak, Northern red oak, overcup oak, pin oak, sawtooth oak, scarlet April oak, water oak, willow oak, almond tree, Brazil nut, candlenut, cashew, gevuinanut, horse-chestnut, macadamia, Malabar chestnut, mongongo, peanut, hickory, pecan, chestnut, hican, almond, pistachio and some species of pines.
Many nuts have a tendency to lower cholesterol, reducing the chances that an individual will suffer from heart disease. Those with insulin resistance in type-2 diabetes are recommended to have a diet high in nuts. Nuts have a large amount of fatty acids, which can aid the brain and lowewr blood pressure. (Of course, always check with your physician regarding dietary recommendations for a specific ailment.)
Nut trees have different requirements with temperature, water and humidity preferences. The size of the nuts grown on a given tree is determined by how well the environment meets the needs of the nut tree. Some nut trees are able to pollinate themselves, but most need cross-pollination in order to produce nuts.
Nut trees usually do better on the sandy loam soils and are not too happy with clay soil. With the exception of the pecan tree, the nut trees need well-drained soil. Nut trees also usually need acidic soils, except for the walnut tree that can thrive in soils, which are more neutral. Nut trees need more nitrogen than other nutrients in order to thrive.
The pecan weevil, shuckworm, huskfly maggot, pecan nut casebearer, stinkbugs and spittlebugs are all a threat to the less hardy nut trees. Chestnut blights, pecan scabs, walnut anthracnose, walnut blight and walnut bunch disease are some of the more dangerous diseases afflicting nut trees.