13/11 Light Cycle

Hello guys my 2 plant garden is a little skimpy and I switched to flower 1 week ago. I am on a 12/12 light schedule right now and since my plants are a little skimpy how about I switch to a 13 hrs. on 11 hours off schedule to plump up the plants a little. Will they still flower with this cycle or will they revert back to veg? 

  • They would still flower, however, you run the risk of stressing them out in BLOOM, which would be recoverable. This, unfortunately, could take a couple weeks TO recover it making your harvest less plentiful.

    usmcmoss03   Jan 11th 2018
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2 answers

  • Plants actually like the dark cycle, it gives them a chance to recover and they even grow at night. I would stick with 12/12.  Go light on the nutrients, create a good environment for them and hopefully they come back. Once they have damage done to them they dont usually heal that part. 


    • posted by

    Cannabis is classified as a 'short day' plant as it is concerned with its photoperiodism. There are: (short day) (long day) & (day neutral). Although we call them 'short day' plants it is somewhat of a misnomer. The day-light length has no effect on the flowering mechanisms of plants. We call them 'short day' plants, but they actually require a LONG NIGHT. The trigger for any and all plants that require a specific photoperiod is only the dark period. I have ran several trials on Cannabis to show this first hand. The typical axis point is 9-9.5 hours of dark, some cultivars (cv.) require more. the larger majority of cv. are well into a safe zone at 11 hours. 

    If you are having issues of stress by choosing to run 11/13, make sure you are dealing with exquisite specimens to even begin to delve into this matter.

    Yes plants love the off time, during the dark period photosynthesis 2 takes place as well as dark respiration, this is also the time the roots actively bulk up.

    I have had no problems in the past showing that day-light length plays no role. I ran multiple runs showing that as long as I stuck to 11 hours of dark I could on occasion even run the light for 24 hours and then turn them off for 11 hours

    i.e.

    on 12, off 12, on 16, off 12, on 6, off 12.....see a trend here?

    On a sepperate but similar topic: The best way to force reversion from flower back into a vegetative mode that I have found, as in lets say you took some cuttings late into flowering being triggered, is to give them about 6 days of very short night periods. for the first week of my cuttings I always throw in about 3 periods of dark lasting 4 hours each

     

    So, lights on 4, off 4, on 4, off 4, on 4, off 4 (24 hours), this can always be modified if you need to work on them or add more cuttings BECAUSE the day-light length plays no role. You are essentially resetting the 'far-red' accumilation that occurs as the lights turn off.

    An extended day-light length can indeed cause stress to some cv., a good majority of the cv. that have been bred in the past decade have many negative aspects they have inhereted from jump-breeding, back-breeding, and self-crossing. If this is something you wish to do, find a cv. that will work for your needs, if you have weak genetics.....kill the plant, I cull a large number of plants in my efforts for efficiency and uniformity in my systems (or give away, since botanists have soft hearts for plants) 

    Cheers.


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