Common Tree Problems

Top 10 Tree Problems

American Tree Experts & Arborists Can Help Solve

American Tree Experts has built a reputation for excellence in tree care. Our trained professionals and certified arborists can identify and implement the appropriate control measures for these common tree problems.

  1. Borers
    Stressed trees are prone to borer attack, in which the insects burrow in and lay eggs under the bark. Infestations can kill trees in one to three years. The best defense against borers is to keep your trees healthy and unstressed…more…

  2. Chlorosis
    A chlorotic tree will display a pale green leaf color within the canopy, as a result of the tree’s inability to manufacture enough chlorophyll. This can cause serious health implications and is often due to iron or manganese deficiencies within the tree.

  3. Compacted Soil
    Trees required a delicate balance of air, water and nutrients. Undisturbed soil is porous, with those pores being filled with either water or air. During construction, as heavy equipment drives over the soil, pores collapse and the soil becomes compacted. These soils remain compacted for a very long time and can be detrimental to the health of surrounding trees. Some species may be affected more than others. Soil remediation may be an effective tool to correct declining trees resulting from soil compaction.

  4. Diplodia/Dothistroma Blight
    Pine trees (especially Austrian pines) are susceptible to this disease, which causes needles to turn brown and die. Stressed trees with weakened defense systems may not be able to combat this fungal disorder without spray applications of fungicide.…more…

  5. Girdling Roots
    Trees can begin to die slowly because of roots growing up instead of down. The roots gird the main stem of the tree and cut off the movement of water, air and nutrients. These roots can form as a result of planting trees too deep (and other unfavorable conditions or nursery practices). Watering, fertilizing and pruning will do little to correct the problem once injury progresses too far.

  6. Japanese Beetles
    Readily found feeding on the upper side of leaves in summer, these insects cause considerable damage. Adult beetles are most active in the afternoon, as they feed on flowers and foliage between the veins, leaving a lace-like skeleton behind.

  7. Rhizosphaera Needle Cast
    This is an especially detrimental disease for Colorado blue spruce trees. Inner needles on lower branches first become infected and die. The disease spreads outwards killing entire branches and then moves upward throughout the tree. Fungicide applications in the spring can be made to prevent spread of this disease.…more…

  8. Scab Disease
    Scab, a fungal plant disease, can cause complete defoliation of ornamental and fruit trees in the rose family, particularly crabapples. Rake up and remove all dropped leaves of affected plants to prevent fungal spores from spreading. Spring fungicide applications will provide protection from this disease.…more…

  9. Weak Branch Unions
    If a tree is not properly pruned when it is young it can develop weak branch unions that may split apart when it is older. These weak unions are unusual in forests because trees start out in the understory under shade where natural pruning occurs. If a tree has multiple leaders that originate low in the crown and have a narrow space between them, then a support system may be necessary to keep them from splitting apart.

  10. Winter Injury
    Even during mild winters, evergreens can lose moisture and become unable to replenish it. Make sure your evergreens have sufficient soil moisture. Antitranspirants applied to evergreens in the fall will reduce moisture loss…more…

Call American Tree Experts’ certified arborists for help with these and other tree and shrub problems.