The larvae feed between the bark and wood, creating S-shaped channels that cut off the tree’s ability to draw up water and nutrients. These channels can only be seen if the bark is peeling away. However, when the larvae turn into Emerald Ash Borer, they exit the bark and leave a “D” shaped hole.
Trees that are already infested show signs of canopy decline, and those who have lost 50% or more of the canopy most likely are untreatable. The current prescribed method of treatment is a systemic soil injection that will uptake an insecticide to the effected layer. Those Ash Trees that have not been effected could greatly benefit from Deep Root Fertilization.
Please call 800 327 0034 to schedule a free consultation with one of our Arborists if you have Ash trees that need an evaluation.