Recently my gardening chats with friends all begin with “Have you put your garden to bed yet?" The answer usually comes with a groan, or a non-committal Mmmmmm, letting you think they might actually have done all the jobs on the fall clean up list. I certainly have not. Cleaning up in my garden begins with cutting back. I’ve cut back the astilbes, veronicas, delphiniums, Artemesia lactiflora, lilies, Achillea ‘The Pearl’, various other yarrows, and I’m almost done…