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With the arrival of the emerald ash borer and its potential threat to ash trees, the goal of any urban forest is to achieve tree diversity. No one more than 20 percent of one kind of tree should comprise the total urban forest population. Diversity should be planned for both public and private landscapes.
UW-Extension has developed a detailed list of landscape trees for consideration in the planting of the urban forest. View lists of replacement trees.
Whenever making the choices for emerald ash borer (EAB) prevention and management decisions, homeowners and commercial industries should review the latest decision-making tools available to them. University research results suggest that some treatment products and methods are effective when made appropriately, although there is some uncertainty of the long term effectiveness.View more information on EAB insecticide options
.If you have an EAB-infested tree that you would like to use as firewood, please note:
- EAB larvae in a downed tree can survive and emerge from the firewood pile for up to two years.
- Wait until late autumn to take down an infested tree.
- Be sure you will use up all of the wood from that tree by spring.
- If you cannot use all of the wood in one winter season, you are better off leaving the infested tree standing through summer. Then follow guidelines for wood utilization when finally taking the tree down.For more information and to discuss ash trees in your yard contact the County UW-Extension office in your area.
Easy Guide for Emerald Ash Borer Regulations (in PDF format).
Homeowner options for processing ash wood (in PDF format).
Guidance from UW Extension on over-the-counter pesticides for EAB control.
A simple guide for homeowners, including ash tree identification and pesticide considerations (in PDF format).
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