in strict, winters with little snow, winter lettuce freezes heavily, if not protected against winter sun.
Barfrost makes the winter lettuce very difficult. That is why it is best to give the plants a covering of spruce brushwood. This protects against excessive perspiration (evaporation) at Sunshine. Without this protection, water is lost, that the lettuce from the frozen ground cannot replace, so that it dries up. Anyone who has rotten manure at their disposal, should give the winter lettuce a ground cover. However, it must not cover the lettuce plants. Above all, the soil cover prevents the frost from penetrating too quickly into the soil.
