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Once we recognize that we are often the problem, we can do much to solve it. Here are some brief guidelines for you, the homeowner, that will help you keep your trees beautiful, safe and healthy.
Give trees a good start: Plant the right trees in the right place. Learn the biological requirements of your trees. Do not plant: 1) pin oaks in alkaline soils, 2) trees in old alkaline building rubble, 3) willows in dry soils, 4) pines in wet soils, 5) birches in shade, or 6) dogwoods in unprotected open sites. And do not plant anything unless you plan to maintain it.
Plant properly. Do not crowd trees in small holes with compacted soil. Do not over-amend the soil with humus. Do not fertilize at planting time. Do not tie young trees sc tightly that they do not move, leave braces on after tree is established, or injure bark with cords or wires.
Keep grass away. Do not water grass heavily near trees that normally grow on dry sites, lime grass heavily near trees that grow best in acid soils, or wound trees with lawnmowers and other machines. And remember, heavy use of herbicides may harm trees.
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