Winter gardening

Note (2/20/13): This post is backdated to match the photos

We had temperatures twice dipping below 20F in the first week of January. I checked in on the frames mid-month when we had a thaw. Under a layer of ag-cloth and a layer of clear plastic, everything appears to be doing well. The slug traps were emptied and refilled and I planted some Tyo spinach to see if it will grow in these conditions. I also harvested some carrots which were the sweetest I have tasted from our garden.