1.   The Emerald Ash Borer Information Network


2.    The Emerald Ash Borer Treatment Bible, A Collaboration by 5 Entomologists from Ohio State, Michigan State, Purdue and Colorado State


3.   Acorn Tree Service offers resources for better tree care. This includes information on how to best take care of your trees.  Reasons to have tree pruning done:


    Clear tree branches from a house.

    Remove excess interior tree branches.

    Prune dead tree branches.

    Trim tree branches away from a sidewalk.

    Remove broken tree branches.

    Remove low tree branches for vehicle or pedestrian traffic.

    Cut tree branches back from a driveway.

    Clear tree branches from a building.

    Prune tree branches to create a scenic view.


4.   How to tell if your tree is healthy


Look for initial signs of severe stress, such as changes in leaf color and early leaf drop. Often, brown or dead-looking leaves will still be on the tree. That’s usually a good signal that the tree is dead or dying.


The first thing that you want to look at is the base of the tree where it meets the soil, or root flare of the tree. We can’t see what’s going on underground so we have to look at the part of the tree that is keeping it standing. If the tree doesn’t have a root flare, it could mean that someone in the past might have re-graded your property and put too much topsoil over the roots and the root flare. In time, this will cause the tree to decline because the tree’s feeding roots, which are in the first 10-12” of the soil are now covered. This will then prevent the tree from getting water and nutrients. When looking at the root flare, take notice for mushrooms or any type of fungus that is growing on the bark. Mushrooms grow on decaying wood. This is one of the best ways to tell if your tree is dying.


Take notice, too, if you see any sawdust or carpenter ants going up and down the tree. The sawdust and the ants are a good indication that somewhere on that tree is some wood decay. If the tree has wood decay that also could mean that the tree might have some other things wrong with it that you can’t see like other insect problems and disease.


The trunk of the tree supports the weight of all the branches. Take a look at the bark and trunk of the tree. Look for holes, cracks and peeling bark. If the trunk of the tree is starting to decline, that will weaken the entire integrity of the tree. Wherever you see an area of the tree without bark, then that means that side of the tree is not getting any nutrients. The tree’s transportation vessels for nutrients are underneath the bark.


5.   The benefits of tree pruning


    Increase health of trees by removing diseased branches.

    Increase safety of trees by removing large dead braches or weak or broken branches.

    Reduce possible storm damage by removing excess interior tree branches.

    Create tidy and well kept appearance of landscape.

    Improve traffic or pedestrian flow around trees or under trees.

    Improve view of traffic or business signs.

    Improve growing conditions for landscape shrubs or grass.

    Reduce level of leaf diseases by increasing the air flow throughout the tree canopy.


Home | Services | About Us | Contact | Resources        Andy Hartmann  •  Acorn Tree Services of Door County, LLC.       (920)495-0600