Managing Construction Related Stress to Trees

Mature, healthy trees contribute significantly to the beauty and value of a home.  In fact, numerous studies have demonstrated that trees are one of the major factors affecting a potential homeowners decision when purchasing a property.  It is for these reasons that considerable effort is placed on preserving trees when constructing a new home.

Transforming a forested area into a residential neighborhood creates significant stresses to the remaining trees due to the drastic change in environment.  It takes time for trees that were once adapted to a natural forest community to readjust to their new environment.  Several factors contribute to tree stress and mortality including: 1) overexposure of the once protected trees to natural (and unnatural) elements, 2) mechanical damage to tree trunks and canopies, 3) tree root damage or loss from excavation, 4) soil compaction and changes to the natural grade of the soil, and 5) changes in landscaping, drainage, and irrigation.

There is great variability among trees and their ability to withstand construction-related stresses.  Preserving trees is a dynamic process that varies considerably according to tree specie, tree age, location, type and duration of construction, and tree preservation activities implemented before, during, and after construction.  A qualified arborist, urban forester, or an individual knowledgeable in the science of arboriculture can accurately and consistently assess the trees prior to and during construction and develop preservation guidelines to protect the existing trees on site.

The good news is that there are several strategies that a homeowner can utilize to alleviate tree stress.  These tactics range from protecting the roots from damage to techniques designed to increase tree vigor and root regeneration.  Basic tree preservation guidelines such as deep root fertilization, tree protection fencing, aeration, vertical mulching, and precautionary borer treatments can dramatically increase tree survivability.  An arboricultural expert can help you determine which strategies will be best suited for your trees.