cutting down perennials for fall clean-up
We've talked about this before - I know it is ok to cut down ratty, spent perennials - but is it ok to cut down ones that are still pretty much green in anticipation for soon-to-be hard frost? For instance, I cut down the obedience plant, shasta daisy, lobelia, asiatic lilies, veronica, liatris (which was really brown & crispy - home it wasn't dead), ribbon grass (I hate the papery crap flying all over the yard in the late winter & early spring). I just wanted to do it while it was still a little warm out and not have to get out there in November with freezing hands & ears. That doesn't harm the plant to do it a little prematurely, does it?