pruning for winter
I know it's a little early to be talking about this, but I'm trying to make solid (as opposed to my usual whimsical) clean-up lists. Which which perennials (and shrubs, if any) should be pruned back for winter in our climate? I've found lists on-line, but (surprise, surprise) they don't all agree.
I know that Monarda and Phlox can get hit by powdery mildew, and it makes sense to cut those back. But what about Penstemon? I found it on some lists, but a local nurserywoman said to leave them alone until spring. And what about catmint?
Does anyone have a list for winter pruning for our area?