36 hours of dark before flowering

Discussion in 'Growing Information' started by crawl, Feb 15, 2017.

  1. crawl

    crawl Registered

    Has anyone seen it making a difference doing 36 hours of dark before switching to flowering? I usually just switch from 18/6 straight to 12/12 and get good results, but have been reading people saying 36 hours of dark yield better results . I was wondering if anyone has first hand knowledge on this. Thanks
  2. Dutch Pimp

    Dutch Pimp Up in Smoke

    I've done 24, 36 & 48 hours, darkness. No noticeable improvement.

    Pistils might show up sooner?
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  3. Weezard

    Weezard Registered+

    The science does not support that
    After about 14 hours in the dark, the phytochrome has all reverted.
    There is no mechanism for gain past the first 14 hours.

    I did try it way back when I was still reading grow-rumors.
    Now, I just look up the science. Saves a lot of time and effort.

    I take them from 16:8 to outdoors which runs between 13:11, and 11:13 at this lattitude.
    I give them one day of shade to harden them off of course, then full sun and they flower within a week.
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  4. crawl

    crawl Registered

    Right on thanks.Was doing some reading and came across doing that i always go straight to 12/12 Just wasn't sure if there were ant benefits to it. my plants are all clones so seeing the pistils sooner dont really change anything. Thanks
  5. crawl

    crawl Registered

    mine are indoors
  6. Weezard

    Weezard Registered+

    Same difference.
    Read up on the chemistry of Florigen production and the role of Phytochrome.
    The more you know, the mo' betta you grow.
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