Manual Growing lights
up to 60-90 minutes for the last foraging bumblebee to return to the
hive. Under low light conditions, this time increases up to 120 minutes. Given the [...] general, the hives can be opened if there is 28 watt/m 2 PAR-light, 15 minutes after sunrise or after 10:00
in the morning, depending on the system you [...] bumblebees because they get locked up
above the screen. Lock up the bees 90-120 minutes before the energy screens close.
2.3.2 Snowfall
Snow reflects 90% of the