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Disease & Pest Management

  • November 1, 2020

    CSI for Bugs, Part 1: Basics for Diagnosing Problems Caused by Insects and Mites

    By Michael J. Raupp, Ph.D.

    Photo 1: This willow oak in Charlotte, North Carolina, had a nasty surprise one spring. What might have caused this damage? Find the answer at the end of this article. All photos courtesy of the author. This is part one [...]

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  • October 1, 2020

    Jack O’ Lantern Fungus: A Trick Pathogen?

    By Christopher J. Luley, Ph.D.

    Photo 1, at right: A cluster of Jack O’ Lantern mushrooms at the base of an otherwise healthy white oak. The fungus appears in late summer through the fall. Unless otherwise noted, photos courtesy of the author. Several mushroom species [...]

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  • October 1, 2020

    Identifying Wood-Decay Fungi

    By Christine Balk

    Xylaria polymorpha – Dead man’s fingers. Finger-like fruiting bodies are found on the roots or near the base of infected trees, typically in groups of three or more. Fruiting bodies are black with a white tip, resembling dead fingers rising [...]

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  • July 1, 2020

    Beware the Australian Silk Oak

    By Victor Riquelme

    The author appears to be already scratching during the removal. Photo by Gabriell McGinnis of T Town Tree Service. I am writing to report on an unusual accident that happened to me on the job here in Arizona. I own/operate [...]

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  • April 1, 2020

    Arborists vs. Spotted Lanternfly: a SWOT Analysis

    By Brandon M. Gallagher Watson

    Partnering with public agencies for a treatment contract is one of the SWOT items under "Opportunities." Late-summer and fall treatments to control spotted lanternfly might focus on protecting tree trunks with systemic bark sprays, as shown here. Unless otherwise noted, [...]

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