![]() ![]() Leave your ash trees in as long as they are healthy, in good condition, and in a good location. If your tree has EAB-like symptoms, like canopy thinning, branch dieback, sprouting growth from the base of the tree, or D-shaped exit holes, it should be examined by a professional. Mountain Ash is not affected because it isn’t a true ash. Ash trees, those in the Fraxinus genus, can include the green, white, Patmore, Marshall’s Seedless, and Autumn Purple Ash. If you are lucky enough to get the seeded variety, the seeds look like paddle-shaped helicopters and are held in clusters on the tree. They also have leaves of 5 to 7 leaflets. Ash trees have an opposite leaf pattern, or the buds are across from one another on the stem. The bark of ash trees have diamond shapes or capital “A’s”. Proper tree identification is key to knowing if you should be concerned about EAB or not. EAB infested ash trees will exhibit thinning or dying branches in the top of the tree, S-shaped larval galleries under bark, D-shaped exit holes and suckers or advantageous growth along the trunk and main branches. The larvae of this wood-boring insect tunnel under the bark of ash trees, disrupting the flow of water and nutrients, ultimately causing the tree to die. It is a small, metallic-green beetle that is about 1/2 inch long. Knowing exactly which insect is in your tree will let you know if you should start looking for a replacement or if you need to treat.ĮAB is an invasive beetle that attacks and kills all species of ash. The redheaded ash borer, banded ash borer, flatheaded apple tree borer and eastern ash bark beetle attack stressed or dying ash trees. The ash/lilac borer, banded ash clearwing and carpenter worm can attack healthy ash trees. There are several different native borers that are normally found on ash trees. There are several different types of borers that attack ash trees, so correct identification is key. “Finding borer holes in ash trees doesn’t necessarily mean you have EAB. ![]() This article will share information from Elizabeth Killinger, Extension Horticulture Educator, about what this means for your ash trees and what you should be doing now. The Nebraska Department of Agriculture (NDA) confirmed Emerald Ash Borer (EAB) was found in a trap at the Blue Valley Campground in Seward, NE in early August 2020. ![]()
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