Before and After Tree Treatment

We wanted to share some photos of before and after treatment.  We think you’ll agree they’re pretty remarkable. In the first two photos you see an absolutely enormous Ash tree. This tree is probably 200 years old, or older, with a trunk diameter just short of five feet across. It hangs over and shades the entire back of our customer’s house and stretches out over the back yard. The tree is spectacular and adds tremendous value to the property.

In 2013, we were contaash tree before eab treatmentcted by the owner of this tree, concerned about its obviously weakened condition from the Emerald Ash Borer, as shown in the first photo. You can see by looking at the trees in the background of the first photo, that this tree should have been fully foliated when this photo was taken, as those other trees were.

We gave this potential client a 30% chance, maybe less, of saving this tree but this tree owner said if there is any chance at all, he wanted to try.

ash tree after eab treatment

After 4 years of treatment, you can see how it looks today in the second photo.

Needless to say our client, and we, are thrilled over the result.


To date, we have saved over 94% of the Ash trees that we have set out to save. The only exceptions are trees where treatment was started later than would have been optimal or where there are horrible soil conditions such as too much clay or too wet of an area. These other stress factors, coupled with the constant onslaught that these trees are under from the Ash Borer, were just too much for those trees to overcome.


magnolia tree before treatment

magnolia tree after treatmentIn the second set of photos is a Magnolia tree. The first photo shows the tree in a very weakened, yellowing state. Yellow leaves occur when a tree is lacking necessary nutrients to keep its leaves green. This yellowing can be caused by insects sucking the nutrients out of the tree and/or poor soil conditions. Yellowing leaves are an indication that the tree only has a few years left to live if left ‘untreated’.

In the case of this tree both Magnolia Scale insects, as well as a small plot of soil in which to grow (sandwiched between the house foundation and a driveway), were the cause of its trouble back in 2011. In the second photo you can see the tree today, after six years of treatment. It is obviously thriving and its natural green color is back – thanks to a tremendous reduction in the scale insect problem and proper Root Fertilization.

Now, of the hundreds of Magnolia trees that we treat, we have a few trees in certain neighborhoods that are not responding as well to our treatments against the Magnolia Scale which is plaguing these trees all over our area. Scale insects, whether it is Magnolia, Lecanium, Cottony Maple or Euonymus Scale, are difficult to control. It often takes a few years to get the problem under satisfactory control. Why is this? Because Scale insects are masters at developing resistance to pesticides. The problem is that we don’t know which products they have learned to resist until we see the result the following year. Once we see that resistance might be an issue, we have to switch to different products to get control. Going forward, starting with treatments this coming Fall for this problem, we plan on rotating pesticides much more frequently.

Parkway Planting Hazardous to your Ash Trees’ Health

We hope you are enjoying our mild Chicago summer.  Even though the weather has been cooler than usual, that doesn’t mean your landscape doesn’t need special care.  Here is a photo that illustrates this beautifully:

Here you can see two lines of “Green Ash” trees on opposite sides of a parking lot. So why do those on the left look so much worse than the ones on the right?

Any tree on a parkway, sandwiched between the street and the sidewalk, is at risk as it ages. Its roots are in a ‘soil coffin’ so to speak and unable to freely stretch and grow.  Notice the cement coffin the Ash trees on the left are in compared to the Ash on the right. Although those on the right still have a parking lot on one side, they are much farther away from the lot. They are also at least 30 feet away from the building so the roots have a more expansive environment in which to grow.

This stress factor, combined with the constant onslaught from the Emerald Ash Borer, makes it more difficult to save these Ash trees. All of these Ash are under the same degree of Borer infestation but look how much stronger those on the right are…… temporarily. All of these trees, on both sides of the parking lot, will eventually succumb to the EAB without treatment; but obviously those on the left will die a year or two sooner.

Tree Green has had remarkable success treating Ash trees for Emerald Ash Borer.  Give us a call, and we’d be happy to give you a free evaluation.