How often can trees be injected?
Since most of the chemistry used by ArborSystems is formulated for season-long control, this is usually not a problem. Repeated yearly injections may be made without harming the interior wood of the tree. However there are instances where an injection would be made to control both insect problems as well as disease problems. With the advent of the WedgeChek, this is easier than ever. Repeated injections in the same holes may be made in the same year. It would be advisable to wait several weeks between injections due to the different carriers used by the different chemicals. We have two Pin Oaks in our long-term trial study that have been injected over 150 times each.
