Affected trees may survive indefinitely while continuing to gradually decline, or death may occur in a year or two. Trees that have been declining gradually may appear to suddenly die. In addition, lime-induced iron deficiency is often associated with oak declines and girdling roots can contribute to maple decline. These problems are explained below. Attempt to determine stresses associated with the growing site and alleviate them if possible.
Early recognition is important.
Water thoroughly during dry periods. Water over several hours using a slow running stream of water from a hose. Move the hose periodically to distribute the water over the entire root area. Mulch soil over the roots of the tree. Avoid site disturbances, like soil compaction, as well as injuries to the trunk, roots and branches.