Question
Hi Jim,
Several years ago I planted a purple ash and now I am hearing that ash borer is making it's way to my area.  Is there any way I can protect my tree?  I'm thinking of planting another shade tree this spring just in case infestation is inevitable.  Can you suggest something that is pest and disease resistant and will thrive in my Illinois clay soil?    Thank you,  Gretchen

Answer
Your ash tree will be ok. These insects can be prevented.

Bayer Advanced Tree and Shrub Insect Control with its MERIT?insecticide is the first do-it-yourself no-spray consumer product to protect the tree against destructive insects from the inside out.

Most traditional insecticide products require you to use ladders and spray the leaves of the tree. That can be dangerous, and not terribly effective, if you have a tall tree. Bayer Advanced Tree and Shrub Control is a drench. Just mix it in a watering can and pour it at the base of the tree

The insecticide moves down through the soil, where it is absorbed by the roots. Once absorbed, it moves up through the growing part of the tree beneath the inner bark, exactly where the EAB larvae feed. A single treatment provides the ash tree with up to 12 months of insect protection from the roots to the highest branches. That is longer lasting protection than any competitive product.

To get complete protection, the MERIT?must distribute completely through the tree. This may take one week to three months for very large trees

If you want to know more about Emerald Ash Borer
here is a web link to this information. http://www.emeraldashborer.info/

Here is a link to alternative trees suggested by the Mich. Forestry Folks or you can call your local state Forestry agency office (the number should be in your local phone book).http://www.emeraldashborer.info/files/e2925.pdf