December 27, 2016
When growing overwintering crops in the greenhouse, it is not so much cold, but rather moisture that is often the biggest obstacle to things surviving. There is virtually no evaporation during the winter months, which is why watering is not necessary at all until the days get longer and the growth starts again. Excessively humid conditions can be particularly deadly for eg lettuce, which is bad at being attacked by rot and fungus. Here, the day after Urd, is unfortunately a clear example of rough overwatering of the greenhouse lettuce plants, while the spinach can just be glimpsed UNDER the water surface.