Trees spread out both above and below ground and branch overhang and root growth can cause considerable damage and incur considerable expense if a tree is poorly situated. Consider the planting location with respect to foundation, concrete and asphalt structures, and drainage structures. Trees can play an important role in climate control . Deciduous trees planted on the south, west and east perimeters of a lot will provide shade during the summer while allowing scarce sunlight through in the winter when leaves have fallen. Evergreens, on the other hand, planted on the north and west sides of a property, can reduce winter heating costs by serving as windbreaks.
Drainage is yet another issue to consider.
Heavy clays in poorly-drained sites present particular problems as many species of trees including white firs, yellowwoods, beeches, red oaks and yews will not tolerate wet feet. In all cases, stagnant water pooling around roots can lead to root rot caused by lack of available oxygen. You can do a general test for soil drainage by digging a hole in the planting area and filling it with water. If the water hasn t drained away in a couple of hours, drainage may be an issue. In areas where drainage is a particular problem, planting in raised beds of 12 to 18 inches of well-drained quality topsoil may be a solution.