Well, I would probably suggest pruning the leafs (if they really are indeed infected) other then that, I'm not exactly an expert. I've read (on here a lot) that you can basically prune all the leafs off the first couple of feet, because they tend to get eaten/infected the most, which is what looks like is the case for you. It looks like your first years have buds on the cascades, I'm jealous. Mine don't have any yet
