As we move through time, research and our experience with Emerald Ash Borer continues, and our knowledge base grows to better serve you. While this letter does not constitute any change in our service philosophy, we occasionally run across a bit of confusion regarding the Emerald Ash Borer program and what it can and cannot provide. Please find here some facts about our Emerald Ash Borer program:
- Effectiveness: Treeage (Emamectin Benzoate) treatment done every other year is 98% effective in controlling Emerald Ash Borer. We have yet to see an Arbor Doctor LLC treated tree die from Emerald Ash Borer if treated with Treeage and if previously uninfested.
- Assessment: The initial degree of infestation is often difficult to impossible to detect. We do our best to give an honest assessment of the tree’s condition and chances of success based primarily on canopy thinning, but also taking into account bark splitting, woodpecker activity, and emergence holes. However, occasionally, a tree will succumb anyway, or is more infested than first thought. Arbor Doctor LLC makes no warranty regarding a tree determined to be already infested tree. Treatment of an infested tree should be considered a rescue treatment. After 2 years, or one Treeage treatment regimen, it should be more clear whether the tree will recover and further treatment is warranted.
- Warranty: There can be no guarantee regarding previously or already infested trees. We have a very good track record saving previously infested trees. We will refund the previous round of Treeage treatment cost if a previously uninfested tree dies from Emerald Ash Borer as a primary cause of death. The health of the tree must also have been protected with a plant health care basal tilling and organic fertilization regimen. Our Emerald Ash Borer charges include evaluation and treatment. If a previously infested tree dies, you have still received consulting services and treatment services.
- Treeage vs. commercial and retail Imidacloprid products: We have treated trees with Imidacloprid and Treeage. Our experience at this point is clear. Treeage treated trees are totally clean of Emerald Ash Borer, if previously uninfested, while trees treated with Imidacloprid are showing varying degrees of infestation. This may have been acceptable in research plots when studying how to preserve large numbers of trees, but this level of control is unacceptable according to our standards at Arbor Doctor LLC. We have one tree in particular under our care which we are doing rescue treatments of Treeage, despite its being treated with Imidacloprid all along. For this reason, this year we switched most of our annual Imidacloprid clients to Treeage. This caused a little sticker shock at first, but the 2 year cost is actually the same. Only small trees are still being treated by Arbor Doctor LLC with Imidacloprid. We cannot recommend treating larger trees with Imidacloprid, either commercial or over the counter products, based on our experience.
Arbor Doctor cares about your trees. We want to help you make the best management decisions. Please feel free to contact us by phone or email with any questions.