Atwood LawnCare

Shade tree decline can be caused by a number of factors. One of the most common errors I see occurs at planting time. Many people plant trees too deep, which can suffocate the roots. Dig planting holes 2-3 times as wide as the root ball and plant the tree the same depth as the root ball. Many people plant very large and expensive trees to get the effect of an "instant landscape". However, large trees may experience several years of transplant shock because they have so much more canopy than their roots can support. In the long run, it may be better to start with a smaller tree and provide good maintenance.
One of the major causes of tree decline is planting a tree in a location to which it is not suited: a shade-loving tree in full sun, a large tree in a confined location, a tree intolerant of air pollution in an urban landscape, or a tree that prefers well-drained soil in a swampy area. Choose a tree that is well-adapted to local conditions.

Other factors which place trees under stress and lead to decline include drought, pest epidemics, and alterations of natural drainage. Improper pesticide applications can damage trees. Construction activities that compact the soil, change the grade, and damage or suffocate roots are a major cause of tree decline. Often symptoms do not appear for several years after the trenching or construction occurred. It is important to protect the root zone of the tree all the way to the drip-line to minimize damage from construction or digging activities.

You must try and determine the stress that is causing decline. Has there been any recent digging or other activity that damaged the roots, or improper planting? Is the tree well- adapted to the site? Drought from years past causes alot of stress with symptoms often appearing years later. Examine the leaves for signs of disease or insect damage (mildew, spots, holes, etc.)..
To prevent tree decline, first choose the appropriate tree for the site. Follow correct guidelines for planting, fertilization, pruning, and watering. Avoid wounding the tree with lawn mowers, equipment, nails, etc. Be careful when applying pesticides around the tree, especially herbicides which may drift onto the tree or enter the soil and cause damage.