Emerald Ash Borer has been in Minnesota for over ten years; the time to act is now! If you own an ash tree on your property, you will have to decide if you want to treat or remove your tree. The longer an ash tree is infested, the more dangerous it becomes, and the more expensive it is to have it removed. As a first step, consult a tree care company like Tree Trust Landscape Services. A tree care specialist will help you explore options for your trees.