Ha ha, Ali! That is often the reality, isn't it?
I worked on one bed yesterday and couldn't decide if I should cut back the melissa or let it stand. At the moment, it is kind of propping up the crocosmia foliage which is quickly turning brown. Perhaps I'll whack them both down together when they get really unkempt looking.
I find very few garden resources that address fall clean-up. I suppose it may be vastly different depending on your winters. I know those who are covered with snow all winter address things much differently than those of us who are just sopping wet most of the winter.