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manageme soil seed bank weed

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Date and time: Fri, 25 Jun 2021 07:34:12 GMT

Herbicides applied to foliage, bark, or frill cuts on the trunk are effective control measures. Cut stump treatments encourage root suckering and should not be utilized. Treatments should occur no earlier than July 1 and can continue up until the tree begins to show fall color. Effective herbicides include glyphosate, triclopyr, imazapyr, dicamba, and metsulfuron methyl.

Herbicides are described here by the active ingredient. Many commercial formulations are available containing a specific active ingredient. References to product names are for example only. Directions for use may vary between brands.

Contractors/Licensed Applicators

This BMP does not constitute a formal recommendation. When using herbicides, always consult the label. Please refer to the Pacific Northwest Weed Management Handbook or contact your local weed authority.

Tree of heaven has been known to cause skin irritations or allergies in some people. Additionally, there have been rare reports of myocarditis (inflammation of the heart muscle) from exposure to sap through broken skin. People who work around the tree should wear personal protective equipment, including eyewear and gloves.

Except where otherwise noted, all photos taken by David Jackson, Pennsylvania State University Extension.