My winter tunnel kept my plants fine in our cold snap down to low single digits over the past few days. Like last year, the tunnel has two layers, and inner fabric layer and an outer plastic layer. The inner layer is help down by rocks, the outer one by long boards.
The bed is heavily planted with all different types of greens, but they are small and covered with two inches of salt marsh hay. I don’t expect these will be ready to harvest until early spring. (I planted late…)