Still not safe for elms

Ever since I planted a Triumph Elm (Ulmus 'Morton Glossy') in my backyard in 2016, I have been a fan. It's a gorgeous shade tree that grows relatively quickly and is resistant to the evil Dutch elm disease. Alas, that does not mean it is impervious to other ills.

According to a recent article in the Purdue University Landscape Report, the elm zigzag sawfly (EZS), Aproceros leucopoda, a non-native insect, has recently been detected in several midwestern states, although not Indiana (yet). Initially, the EZS larvae chew zigzag patterns into elm leaves, thus the common name of the insect; however, as it grows larger, it skeletonizes the leaves. While most trees will survive defoliation, years of feeding by EZS will weaken a tree and increase its susceptibility to other pests and disease.

If you suspect this pest is on your tree, at least in Indiana, please contact the Purdue Plant and Pest Diagnostic Lab for identification. There is still much to learn about EZS.

As if that were not enough, there has also been an uptick in reports of black spot of elm. It favors cool, wet conditions, so maybe our recent hot dry weather will discourage it.

On a happier note, the asters and goldenrod are not discouraged this year. Both are covered in pollinators of various sizes and types. I'm always happy to see that.

Halloween is coming. I'm not big on holiday decorations, but a few lights here, a seasonal flamingo there, is right up my alley.

Previously, our first frost date was October 6. That came and went with temps in the 70's. Today it is cooler, but still no frost in the forecast. I am SO done with summer. Bring on the hot cider!