Elm Tree leaves turning brown

Asked June 6, 2016, 5:47 PM EDT

I have a large elm in my backyard. Many leaves are spotted and look like they are drying out. On closer inspection it seems as if they are being eaten by a very small mite. This has gone on for a few years. Is there some way to treat this? Your suggestions would be greatly appreciated. Thanks, Frank Crotti Corvallis

Benton County Oregon insect issues urban forestry elm trees

1 Response

Elms are pretty susceptible to leaf miners and the elm leaf beetle.

Here are some references that might help -

http://oregonstate.edu/dept/nurspest/elm_leafminer.htm

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7403.html

you might try contacting the Master Gardeners at the Benton County Extension office for further assistance.