Help Identify Hop Pest or Disease?
We're growing four kinds of hops this year, and we're having problems with some of the leaves. Some of them have holes in them. Some have very heavy gold-colored spotting...it's nearly metallic in color (see photo of leaves exhibiting these issues). I haven't been able to figure out what's wrong. Initially I thought it was a feeding issue, so I've been giving it a balanced fertilizer and clipping the affected leaves, but the problem seems to keep coming back, worst on the oldest leaves. Any thoughts?
Thanks so much!