EAB Infested Trees

Options for when your ash trees have become infested with EAB.

Silvicultural Recommendations for Ash

  • Emerald Ash Borer Planning Simulator (EAB-PLANS®) - Beta Version
    This program was developed to assist decision-makers in managing ash trees in urban and community forests challenged by EAB.
  • EAB Cost Calculator
    This version is driven by an EAB invasion wave model that lets you modify your treatment strategy after the initial wave of EAB has passed. It can produce estimates of forests that contain up to 4,000 ash trees.
  • Factors affecting the survival of ash (Fraxinus spp.) trees infested by emerald ash borer (Agrilus planipennis)
    2012 - Kathleen S. Knight, John P. Brown and Robert P. Long - The article is on the survival analysis of ash trees in Ohio. According to Kathleen Knight, the main take-home message was that ash trees actually died slightly faster in stands with lower densities of ash, the opposite of what the authors thought would happen. This is just the speed of mortality, not the % mortality (almost all the ash trees die eventually no matter what).
  • Ash Management Guidelines for Private Forest Landowners pdf
    University of Minnesota Extension and the Minnesota Department of Natural Resources - Chosen for a 2012 Notable Documents Award from the National Conference of State Legislatures (NCSL) for public policy, recognizing the publication as innovative in providing substantive information on contemporary issues of interest.
  • Ash Silvicultural Prescription Handout pdf
    Michigan DNR - 2011 Great Lakes Restoration Initiative Grant - As the emerald ash borer (EAB) outbreak spreads through various Michigan Counties, landowners are advised to prepare by working with forestry professionals to obtain a forest management plan that prescribes harvest practices designed to reduce but not eliminate the ash component of their upland hardwood stands.
  • Ash Management: Emerald Ash Borer
    2012 - Michigan DNR - Forest Resources Division - As stewards of Michigan's ash resources, a goal is to reduce the vulnerability of our forest resources to the emerald ash borer (EAB). The goal is not to eliminate ash from the forest, but to create a more diverse forest resource that is resistant to catastrophic changes affecting a single species or genera. Generally, the recommendation is to reduce the ash component of forest stands to a maximum10% of total stand basal area, and to promote tree species diversity. Vigorous pole size and smaller ash should be targeted for retention. Removing one large ash has a much greater effect on reducing EAB population potential than does removing many saplings or a few pole size trees. The objective is to create a stand that will maintain a minimum or greater basal area, in the event that all ash is eventually lost to EAB.

Removal Information

Replacement Information

General Information


  • Alternative Tree Species Selection pdf
    This guide gives suggestions for species that should be considered in situations where a homeowner, landscape, or urban forester may have planted an ash in the past in Michigan's lower peninsula


  • Colorado Tree Coalition
    The Colorado Chapter of the American Society of Landscape Architecture, Colorado Nursery & Greenhouse Association, Colorado Tree Coalition and Colorado State University Extension have compiled a Front Range Tree Recommendation List to help choose the right tree for specific areas.





  • ReTree for Nebraska's "Good Trees for the Good Life"
    To promote species diversity, ReTree Nebraska has chosen a select group of preferred species that perform well in Nebraska but aren't widely planted. ReTree Nebraska's Good Trees for the Good Life helps individuals choose the right tree for their landscape while improving the species diversity and vitality of Nebraska's community forests.


  • Ash Replacements for Urban and Woodland Plantings pdf
    2005 - OSU Ash Alert - In developing this guide for selecting tree species to use to replace ash, it was assumed that, if not for emerald ash borer, one or more of the ash species would be suitable for the planting. Tree species included in this guide, therefore, are generally of the same size as ash and grow well on sites suitable for one or more of the native ash species. You will not, for example, find tree species in this guide that grow to a maximum height of 25 feet and which would be suitable for planting under utility power lines, as ash would not be an appropriate tree for such a planting.


Treatment Information

Emerald Ash Borer Control
From the Michigan State University Knight Center for Environmental Journalism.
View original story »

© 2011, Great Lakes Echo, Michigan State University Knight Center for Environmental Journalism. Republish under these guidelines. Reporting supported by the John S. and James L. Knight Foundation.
  • Managing Emerald Ash Borer: Decision Guide pdf
    2016 - A step-by-step guide to help you manage your ash trees.
  • Insecticide Options for Protecting Ash Trees from Emerald Ash Borer pdf
    June 2014 - The most current, up-to-date information and research on if, when, and how to treat ash trees is available in this bulletin.
  • EAB Insecticides: Label Guidance for Use Limits pdf
    February 2012 - From the Minnesota Department of Agriculture - Some insecticides used to control emerald ash borer (EAB) have annual per acre use limits. The Minnesota Department of Agriculture (MDA) offers this label guidance to help applicators and others comply with label directions, meet tree treatment objectives, and minimize environmental impacts. The MDA completed a special registration review of EAB insecticides in 2011. The review concluded that insecticides commonly used to control EAB are not likely to harm human health or the environment when used according to label directions.
  • Frequently Asked Questions Regarding Potential Side Effects of EAB Insecticides pdf
    February 2011 - Research and Extension Specialists from Michigan State University, the Ohio State University OARDC and Extension, and University of Minnesota Extension have put together a comprehensive publication that addresses questions and concerns regarding insecticide use to control emerald ash borer.
  • Coalition for Urban Ash Tree Conservation - EAB Management Statement
    English pdf | French pdf
    January 2011 -This document is an endorsement for ash tree conservation as part of integrated approach to managing emerald ash borer in urban areas, and is supported by university scientists with expertise in EAB management, commercial arborists, municipal foresters, public works officials, and non-governmental organizations (NGOs).
  • Ash canopy thinning and dieback photo illustration
    September 2007 - Effectively treating EAB-infested ash trees can be tricky. Many people are unaware of the degree of infestation their ash tree(s) may have, so Dave Smitley, Michigan State University entomologist, has created this guide that explains the stages of ash canopy thinning and dieback. These stages may help the homeowner determine if it is worth the effort to try to save the tree, or if it may be best to take it down.

The following contain useful information for professionals:

  • "Slow Ash Mortality" – SLAM Pilot Project
    Description: The SLAM project is a collaborative effort involving Michigan State University, the USDA Forest Service, USDA Animal and Plant Health Inspection Service (APHIS), Michigan Technological University (MTU), the Michigan Dept. of Agriculture and Rural Development (MDARD), the Michigan Dept. of Natural Resources (MDNR), and Michigan Conservation Districts in Michigan's Upper Peninsula. The goal of the SL.A.M. pilot project in Michigan's Upper Peninsula is to delay and slow the expansion of ash mortality by reducing populations of the beetle in newly-infested sites, outside of known EAB infestations.

EAB Research and Technology Development Proceedings

IMPORTANT NOTE: Since the emerald ash borer's discovery in 2002, research has been ongoing to develop tools to control and eliminate this pest. Currently, there are a number of treatments available for use by homeowners or tree care professionals that can provide a varying degree of beetle control. A review of all options is recommended. As more methods are developed, more information will be available. References to commercial products or trade names do not imply endorsement by the entities supplying the information, or bias against those not mentioned. Reprinting of any material on this site cannot be used to endorse or advertise a commercial product or company.


In response to extensive tree mortality by the EAB, ash seeds are being collected for long term storage to preserve genetic resources of the ash species. This has been a combined effort of the Agricultural Research Service and the Forest Service along with NRCS, BLM, and over 50 cooperators.

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