The beetles haven't been so bad for me the last couple years.
Powdery Mildew has been an ongoing challenge. Ants farming aphids also an issue for me.
A solution of neem oil and safer soap has done wonders, it kills off the aphids and keeps the mildew in check. Prior to burs spouting, I've used sevin in the years i had serious Japanese beetle issues, but that seems to kill off too many beneficial insects and then the aphids really take over.
A good spray down with water is good to keep the aphids at bay between neem applications. But beware the powdery mildew, it took a whole seasons worth of cascades from me last year and needs to be manages aggressively.