Protect Your Ash Tree

Photograph by Keith Kanoti, Maine Forest Service,


Identifying Ash Treesidentify an ash tree

Before you can determine if you have an Emerald Ash Borer (EAB) problem, you must first identify whether or not you have Ash trees. Use these common criteria for identifying Ash.


Ash trees feature compound leaves made of 5-11 leaflets. Ash leaves also have opposite budding, with leaflets being directly across from each other.


Like their leaves, Ash tree branches are also directly across from each other – not staggered.


Young Ash trees will have relatively smooth bark, while mature trees will have tight bark featuring distinct diamond-shaped ridges.

    EAB, emerald ash borer


    When present, Ash tree seeds will usually be clustered together as dry, oar-shaped samaras.

    Signs Of Infestation

    Here are some helpful tips on what to look for in your Ash trees for signs of stress and infestation.

    Emerald Ash Borer (EAB) Adult

    Metallic green-colored adults emerge in early summer to feed on Ash foliage and lay eggs on bark. Little noticeable damage is caused by EAB adults.signs of emerald ash borer Photograph by Leah Bauer, USDA Forest Service Northern Research Station,

    EAB Larvae

    Eggs hatch into larvae during late summer and fall. Larvae tunnel into trees to feed under the bark, thereby destroying the tree's ability to transport water and nutrients. Larvae leave S-shaped galleries under the bark of the trunk and branches. Photograph: Pennsylvania Department of Conservation and Natural Resources – Forestry Archive,

    The Next Year

    Larvae spend the winter under the bark, pupate into adults, and emerge in early summer. As the adults exit the tree, they leave behind D-shaped exit emerald ash borer D shaped exit holesholes. Eggs are laid soon thereafter and the destructive cycle begins again. Photograph by David Cappaert, Michigan State University,

    Check Your Ash Trees For Signs Of Stress

    bark splittingcanopy diebackepicormic shootsincreased woodpecker activity







    CAPTION: Bark Splitting – Photograph by David Cappaert
    CAPTION: Canopy dieback – Photograph by Jason Sharman,Vitalitree,
    CAPTION: Epicormic shoots – Photograph by David Cappaert
    CAPTION: Increased woodpecker activity – Photograph by Joy Viola,Northeastern University,

    Can Your Ash Tree Be Saved?Protect Your Ash Tree

    Healthy trees can still be saved from EAB. Follow these easy steps to help you identify if your Ash trees can be treated with BioAdvanced Tree and Shrub product line.

    Are your trees:

    • Healthy and growing with more than half their leaves
    • Less than 20" in diameter at chest height
    • Showing only few outward signs such as woodpecker damage, bark splits and water sprouts at the tree base

    If your tree fits these criteria, 12 Month Tree & Shrub Protect & Feed may be for you. If your tree doesn't fit these criteria, contact a certified arborist in your area. Photograph David Cappaert,Michigan State University,

    Protect And Feed Your Trees

    • Use 12 Month Tree & Shrub Protect & Feed Liquids to keep your Ash trees healthy and happy
    • Provides 12 months of systemic protection with one application
    • Provides slow-release fertilizer
    • Protects entire tree or shrub – especially new growth
    • Prevents damage from destructive insects like Emerald Ash Borers, Japanese Beetles (Adult), Leafminers and other listed pests
    • Just measure, mix and water in