The capacity of the high tunnels is amazing. After an 18 degree night in our little valley, when I checked all the lettuce this morning, it hadn't even begun to freeze. Our winter greens are amazing plants as well. Lettuce, kale, chard, spinach, (and other greens), with the proper preparations and slowly dropping temperatures are able to freeze (with ice crystals throughout), take two or three days to recover, and be just as good quality as before freezing. They will not only survive, but they will continue to grow!
The cold weather also brings a sweetness to most of our winter greens. We were really pleased with the high tunnel lettuce harvest last week, and we're happy to say that we have even more variety this week that is just as tender and beautiful. Lastly, we are reaching the end of the Romanesco Cauliflower. If you steam or roast these little beauties, you wind up with a perfect little edible Christmas tree.