Manual Growing lights
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 in the
morning, [...] week 9 (depending on the amount of daylight that is available). In the weeks
10 until 39, you can place the hives lower in the greenhouse, along the walkway [...] 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 use to control the opening