Manual Growing lights
unless additional pollen is fed to the bees.
2.1 When to open and close the hives
In general, the hives can be opened if there is 28 watt/m 2 PAR-light, [...] Watt/m2 sunlight outside.
To help them do their job, our general advice is to place the hives as high as possible (above the crop) in
the greenhouse. Several [...] pollination is optimized during the winter months.
Keep in mind that growing lights produce a lot of heat, and can therefore influence the local
climate in the