What’s an Elm Zigzag Sawfly?!
There’s a new invasive insect taking aim at Wisconsin trees: the elm zigzag sawfly (EZS). The pest, named for the distinctive zigzag pattern its caterpillars chew in elm leaves, had its first Wisconsin sighting in Portage County on July 4. As of Aug. 13, the insect has since been detected in at least 17 Wisconsin […]



