Holey Elms

Holes can appear in the leaves of native, non-native, and hybrid elms at this time of the year owing to damage caused by the non-native elm flea weevil. This weevil was incorrectly identified as the European elm flea weevil for many years. However, the true identity was sorted out a few years ago.
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Authors
Joe Boggs

Holey Oaks

What's making holes in newly expanding oak leaves in Ohio? The common name of the oak shothole leafminer (Japanagromyza viridula, syn. Agromyza viridula) clearly describes both the culprit and the damage they do to oaks. This small fly belongs to the family Agromyzidae; the leaf miner flies.
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Authors
Joe Boggs

The Right Redbud For You

Eastern Redbud, Cercis canadensis, put on a show this spring! It did not matter where, the redbuds were simply outstanding. Most of the flowers on Cercis canadensis even survived the cold of May 8-11 with little or no injury. Perhaps it was the shelter-in-place order that made spring flowers seem especially brilliant this year, or maybe they really were better than usual. Whatever the case, I am not going to complain!

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Authors
Paul Snyder

Wilted Buckeye Leaves

A number of trees and shrubs in Ohio suffered frost/freeze damage this spring with symptoms ranging from blasted flowers to wilted, blackened leaves, to twig dieback. Wilted leaves on buckeyes may mimic frost/freeze damage, but a close look at the petioles will reveal the true culprit: the buckeye petiole borer.
Published on
Authors
Joe Boggs