I have an underground well house, unheated. The ground level patio in my backyard is actually the roof of the well house. Access is through a door in my basement cut through the foundation. One of the advantages of a farmhouse built before municipal water was invented. A 100 year old house is otherwise a maintenance nightmare. The ground is still below 42 F. Everything is still nicely dormant. I can usually leave everything in there, fully dormant, until I see the leaves of the landscape street trees, mostly Norway maples. When the leaves of the Norway maples (Acer pseudoplatanus) are about half way unfurled, then it is time to get the trees out of the well house.
So I sit back and relax. I refuse to do the two step march.