Manual Growing lights
equipped with a blue hive door (in the visible spectrum for bumblebees) and
has a special, flower shaped, UV pattern around the entrance of the hive to [...] greenhouse, for example on the sidewalls, also
take the angle of the sun into account. It can happen that the direction of the sunbeams is too low and
therefore [...] to give the
bumblebees the opportunity to work during the hours with the most daylight. Therefore, we advise using an
automatic opening and closing system