A: In general, you should not leave grow lights on 24/7. Plants need a light-dark cycle to develop properly. It’s believed that they truly do “rest” during periods of darkness, and probably use this time to move nutrients into their extremities while taking a break from growing.
Also, when should I turn on my grow lights?
To play it safe, you could turn on the light a few days after you plant seeds, even if they haven’t popped up yet. Once sprouted, most vegetable seedlings and other garden plants require at least 12 hours of good light per day, along with 8 hours of darkness.
Accordingly, how many hours of light do autoflowering plants need?
And since autoflowering plants have short vegetative phases and often grow shorter than photoperiod strains, you’ll typically want to give your autos at least 18 hours of light. This allows for robust growth, without overspending on energy.
Should lights be on during germination?
First, true enough, light isn’t necessary to germinate most seeds: the majority are perfectly capable of germinating in complete darkness. But there is a significant proportion of seeds that will not germinate if they aren’t exposed to light. This includes maybe a third of the plants we commonly grow from seed.
When should I change my light cycle to 12 12?
With six hours of darkness or less, the plants will continue to grow in its vegetative development as if they were experiencing an extensive summer season. When it is deemed time for the flowering process to start, the light pattern is changed to 12 hours on and 12 hours off.
Can plants get too much LED light?
Myth #14: LED Lights Can’t Damage Plants
The reality is that modern LED grow lights can produce a very high level of light and it can cause photo-bleaching and burn leaves. This depends very much on the plant, but a PPFD of 800 is enough to damage some plants.
