FOREST PEST DETECTORS MANUAL

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Does My Tree Have Thousand Cankers Disease of Walnut?

Butternut Also a native of Minnesota, butternut has alternate branching. The compound leaves have 11-19 leaflets. The oblong fruit is covered with sticky hairs.

Chris Evans, River to River CWMA, bugwood.org

Honeylocust

Paul Wray, Iowa State University, bugwood.org

Bill Cook, Michigan State University, bugwood.org

Trees commonly mistaken for black walnut

Honeylocust is a common boulevard tree. It has alternate branching with compound or doubly-compound, small leaflets. Stems have a zig-zag appearance. The fruit is a brown to black, 7 to 8-inch pod that curves and coils when mature.

Dave Hanson, UMN

Kentucky coffeetree

Dave Hanson, UMN

Like honeylocust, the leaves are alternate with doublycompound leaflets, but Kentucky coffeetree has fewer leaflets and the lower leaflets on each stalk are often not doubly-compound. The fruit is a brownish black, leathery pod from 5-10 inches long. The pods hang on through the winter.

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