The leaves of native elms, non-natives, and hybrids can look a bit bedraggled at this time of the year owing to the leafmining activity of the elm leafminer sawfly. Fortunately, leafmining by the sawfly larvae has drawn to a close for the season, so the damage you see now will be the most damage that you’ll see this season. Unfortunately, sawfly development has moved past effective control options meaning that you’ll have to live with the current damage.
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Authors
Joe Boggs
