I'm not a beer brewer, but my friend Brian (known as Rook on these boards) brews. And I thought I'd contribute to the effort by growing some hops so we can brew a fresh-hop beer together. I've got Cascade, Centennial, and Chinook growing in my backyard right now, and they're all doing fairly well for a first effort. Starting about a month ago I noticed a lot of bugs on my hops. Thy don't appear to be eating the leaves, and they're fairly inactive in general, but there are A LOT of them, and I'm quite concerned that one day I'll come out and find all of my plants have been eaten overnight.
Interestingly these bugs seem to have no interest in the peas, lettuce, onions, tomatoes, and apples growing very nearby.
How many is "A LOT?" See for yourself...
These photos are indicative of what every leaf is like. The most mature leaves tend to have less bugs, the youngest ones are completely covered.