WOW! I have never seen Japanese Beetles as bad as they are this year. They absolutely decimated my wife’s holyhocks, are thick on the rugosa rose and and the near by raspberries, and very bad on the Nanking Cherry. Now when I say bad I mean 20 on just one leaf of a holyhock. My guess is that this is just one more side effect of climate change … a few degrees warmer is good for the grubs. I’ll have to get some milky spore down this Fall.