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4-H Environmental & Outdoor Education

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Gardening in Michigan

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  • Oak wilt

    Published on July 30, 2015
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  • Oak wilt disease

    Published on April 14, 2014
    The season for oak wilt is about to begin. A bit of knowledge might prevent a lot of heartache.

  • Oak wilt disease

    Published on April 11, 2016
    Mid-April to mid-July is the season to avoid wounding oaks. Oak wilt is an exotic disease causing increased levels of mortality in Michigan. Once in an oak stand, the disease will kill most of the oaks and treatment is expensive.

  • Oak wilt treatment

    Published on October 17, 2014
    Autumn is the time of year to treat stands that have been infected with the oak wilt disease.

  • Understanding oak wilt

    Published on May 7, 2018
    ‘Tis the season to avoid injuring oak trees. Wounds attract sap-feeding beetles that may carry spores from the oak wilt fungus.

  • Oak wilt treatment success

    Published on September 14, 2018
    Oak wilt treatments were implemented on state land in the Upper Peninsula of Michigan for a three-year period 2014-2016. Sites were monitored for control success. They tell an interesting story.

  • Persistence of oak wilt

    Published on August 29, 2016
    Oak wilt is one of the more pernicious exotic forest diseases currently affecting Michigan forests. It spreads easily, often with the help of people, and remains in an oak stand until all the oaks are dead.

  • Oak Wilt – Bretziella fagacearum

    Oak Wilt – Bretziella fagacearum

  • Oak Wilt in Michigan's Forests (E3169)

    Published on April 13, 2012
    This eight-page publication provides information about the pathology, symptoms and diagnosis of oak wilt disease.

  • Oak Wilt Awareness Month in Michigan

    Published on April 27, 2021
    This campaign raises awareness about oak wilt prevention guidelines: avoid wounding trees between April 15-July 15, seal accidental wounds, do not move firewood, and take prompt action to control outbreaks.

  • Stop pruning oak trees now to avoid oak wilt

    Published on April 7, 2017
    Avoid infecting valuable oak trees with the lethal oak wilt disease by not pruning during the growing season.

  • Avoid oak wilt by not pruning oak trees April-October

    Published on May 1, 2014
    Avoid infecting valuable oak trees with the lethal oak wilt disease by not pruning from April to October.

  • Smart Gardening to prevent oak wilt

    Published on August 9, 2019
    Smart Gardening tip sheet on how to recognize, prevent and control oak wilt.

  • Smart Gardening to prevent oak wilt

    Published on August 9, 2019
    Learn to recognize oak wilt and how to prevent and control this devastating disease. A timely response can mean the difference between losing one tree or many.

  • Stop pruning oak trees now to avoid oak wilt

    Published on April 30, 2013
    Stop the saws! Smart gardeners should not prune oak trees past April 1 to ensure their trees don’t succumb to oak wilt disease. Avoid pruning until November.

  • Oak wilt and other wonders

    Published on November 29, 2017
    Forests are under constant threat from current pests, and more pests are always on the horizon; forest owners and those interested in forests can help reduce negative impacts by learning about forest health issues.

  • Pruning oaks and the oak wilt infection risk

    Published on April 29, 2011
    To avoid above ground oak wilt infection, don’t do any more oak pruning until fall.

  • In the aftermath of oak wilt

    Published on January 8, 2013
    Oak wilt is a common disease that decimates oak woodlands, but it's not the end of the forest. Perhaps, it's a set of opportunities for a whole new forest type?