Manual Growing lights
growing lights come on and start to close 10 to 12 hours later.
Switching on the growing lights before midnight, causes the flowers to close as early as 10:00 [...] it takes 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. [...] the entrance of the hive to help the bumblebees find their
way back to their own hive. Tests showed that the blue door led to 12% more direct entries of