I find man logic mystifying, too. My gunsmith dropped off a big old heart filled with truffles..I figured it to be about 4600 calories..
Why is my gunsmith trying to make me fat?
Your second problem:
“...all my green bunching onions turned into brown sticks with the cold.. Should I cut the tops off, and they’ll come back, or what?”
The owner of the website for Walking Onions, says on her website that the onions will die down in winter but come back in spring and she did not say to cut off the tops, so I'm thinking your onions shouldn't be cut off.
Maybe someone on the thread who lives up north could say what they do. I've pinged greeneyes as she lives where there is cold.
I didn't cover my Walking Onions as the net over them is up high so no way to get a blanket over them unless I unhook all that net which I didn't do. Since she said they would start back in spring, I left them on their own.