Purchased a new build home 8 years ago. Within the front lawn area that fronts on the main street there is a tree planter strip. This planter strip h...
Tree care #851333
Asked September 26, 2023, 5:37 PM EDT
Purchased a new build home 8 years ago. Within the front lawn area that fronts on the main street there is a tree planter strip. This planter strip holds planted Elm trees and these trees are mulched and watered in a strip zone that is less than 6 feet wide. Trees receive water from the lawn sprinkler system. This strip is bordered by a road way and concrete curb on street side and bordered by sidewalk on the opposite side. Some of the trees have beautiful green foliage and are taller than the other surrounding trees. An observation reveals tree root heaving of the side walks. The trees in question appear to be significantly smaller and have lighter green leaves. What can be done to diagnose and treat these affected trees?
Elms have been developed to be resistant to Dutch Elm Disease but they are still susceptible to a disease known as "Elm Yellows." The above websites will provide some information on this disease. If this is what your trees have, there is no treatment available and the trees will soon die. The raising of the sidewalk from the roots suggest that either the growing zone is too narrow for the tree or there is some material (a rock, building material, etc.) under the tree that is preventing the roots from being nourished. In either case, the tree will not likely do well in the future and it should probably be removed. An arborist should be able to confirm whether "Elm Yellows" is present in your trees.
This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.