Don't panic. The City has assistance to help manage your ash trees. Follow the link to learn more...
Emerald Ash Borer (EAB) is an insect from Asia that kills ash trees. Tree decline may take a number of years as the insect larva bores under the bark, destroying food conducting tissues in the tree. EAB is a small insect that is hard to detect. An infested tree may take several years to die, so it is important to have a plan in place for your ash trees. The City has a number of programs available to help you manage your ash trees.
First and foremost, make sure your tree(s) is a healthy ash tree. You can become familiar with the signs and symptoms of emerald ash borer at this website www.dnr.state.mn.us/invasives/terrestrialanimals/eab. If you are still unsure, contact Apple Valley Natural Resources to schedule and inspection by calling 952-953-2461. Trees with a confirmed EAB infestation must be removed to prevent spread of the pest. Companies performing tree work within the City must be licensed by the City; a list of licensed tree contractors can be found here www.ci.apple-valley.mn.us/documentcenter/view/246.
Next, decide if you want to keep your ash tree(s). If the answer is no, it may be a good idea to start removing one or two a year to spread out the cost over time if you have multiple ash trees. Remember, companies performing tree work within the city must be licensed. If your ash tree(s) is in the road right-of-way (the area of your yard within 13 feet of the street) or boulevard, you may qualify to have your tree removed for free by the City this winter. Contact the City Forester at 952-953-2461 to request removal. Homeowners will be contacted further if their tree qualifies for the program.
If you decide you want to keep your tree(s), chemical treatment is the best way to reduce the likelihood of loss. Research has shown that the injection of specific insecticides into the trunk of the tree every two to three years is the most effect way to ward off EAB. Tree injections require special equipment and a licensed pesticide applicator. The City has locked in specific rates with a company for tree injection on private properties (see link below); the negotiated rate is about 30% less than that offered to the general public. Please note, soil drenches have been shown to be inconsistent in their ability to protect ash trees from EAB and can have a higher potential for unintended negative impacts.
If you have questions about EAB or other tree issues, contact Apple Valley Natural Resources at 952-953-2461.