Last fall I cut back 1/2 of my plants and left the others alone to see what would happen. I did not see any discernible difference this past spring. So this year, no cutting back. I would also do my best to keep leaves out of the beds. This year I'm not going to bother, also to see what happens. I've read that the leaves can help them thru the winter but that requires getting them off as soon as possible the following spring. What do you guys do about leaves?