I have been watering and covering plants for weeks now as each cold snap comes through but I think it has been worth it in preserving the plants that we eat. I did not count on all this cold when I bought the cheddar and purple cauliflower. They are nice but don't do the cold as well as the snowball. I am surprised to see how much moisture the soil is holding (see my cute moisture meter) as I was ready to pour more water on an already adequately moist bed. The brussels sprouts though needed water and got a good gallon.
Inside the greenhouse I have a mix right now--peppers and tomatoes in large containers that continue to give up a few fruit every week or so and new seedling that are in their growing pots. I have over 15 tomatoes out there and many celery and broccoli and chard too. The broccoli and chard will move out in a week or so but the tomatoes will live in there until March.