I have now moved the remaining lettuces and spinach out to the greenhouse, using my, 'handy-dandy under-cover at night' method. Four days in; so far, so good! I also noticed that I had a planter full of spinach that made it through the winter because we got a big snow dump before the really cold weather set in and it was well insulated. I also have Kale that's still alive out there, though the bunnies did some serious PRUNING on my rose bushes, though damage assessment for that will come later.
The milk jugs filled with water provide additional heat, but it didn't work so well as many of them split during the winter with the big temperature swings in there, so if I do that again to extend the season in the fall, I'll need to empty them all before we get to hard winter. Live and learn.
