A fungal disease that effects the vascular system of oak trees. The wilt is caused by blocked xylem in   the tree similar to soda straws being blocked. Red Oaks and Live Oaks are highly susceptible.

  The symptoms of Oak Wilt are expressed in two primary ways. Sections of the Oak canopy will have   an oily green appearance then rapidly turn tan colored as the foliage dries. Rapid shedding of leaves   with a variety of the same symptoms o n fallen leaves. There is no effective treatment.

  Pruning without disinfecting your pruner between trees can transmit Oak Wilt.

  It can also be transmitted by root contact. Mature oak roots can reach 90 feet or more from the trunk.   Roots that contact each other will "graft" or grow together.

  Or, by the Nitidulid Sap Feeding Beetle which can be attracted to a "fungal mat" produced by infected   trees.

  Though there is no effective cure, an arborist can perform a preventive "root flair injection" with the   registered fungicide "Alamo". Treatement is most effective if performed in warm weather, March   through October and will last 3-5 yea rs. The cost of injection is $20-$30 per inch of trunk diameter.   Alamo can only be purchased and applied by a licensed pesticide applicator. Our Landscape   department can help you.

  Your Arborist will generally recommend treating all Oaks on the property, and certainly all that could   potentially form root grafts. This will vary from site to site and will usually not include trees already   showing active symptoms.

  No, it is unfortunate that this is not the case. This is an aggressive vascular wilt disease and a tree,   which is genetically predisposed to infection by the fungus.

  For more information contact our Landscape Company or send us an email.