Swiss needlecast on Douglas fir

Dennis Fulbright and Jill O'Donnell, Michigan State University Extension, Department of Plant Pathology, and Christmas Tree Educator -

Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.

Read Dennis Fulbright’s article published last season (April 17, 2009) “It may not be winter injury on your Douglas fir” for more information on swiss needlecast mistaken for winter injury. See photos to help identify your tree problem.

Swiss needlecast
Photo 1. Swiss needlecast.

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