rhododendron leaves are going brown

[GraemePrentice]

My rhododendron leaves are going brown. Any idea why?
TIA.

rhodo-brown-leaf-problem.jpg

[Sue Edgecombe]

Hi there, saw your post, my small plant is doing the same thing. Thought maybe it was because of the hosing throughout the summer or maybe the time of year as the tree goes into it's dormant stage. I tried spraying with a fungacide but it didn't make any difference. Did you plant recover and flower the next season?

[HesiHesi]

They are thrips, common with rhododendron leaves. You can't get rid of it, but you can stop the new leaves getting it by spraying with an insectiside, contact or systemic. Systemic is best