Whats the coldest temputure can a plants be gorwn in?

Discussion in 'General Marijuana Growing' started by 420swed, Oct 9, 2008.

  1.  
    420swed

    420swed Well-Known Member

    I was wondering whats the coldest temperature you can grow a plant because right now i have my plant in my closet just for vegging then when it gets to big i have to move it outside but it will be in a 8x8 room with a 250w hps for light anyone know if this is possible??
  2.  
    the widowman

    the widowman Well-Known Member

    gonna need to be a 400w mh at least for a 8 x 8 room. and for opitmum growing the temps musnt go lower than 70 degrees.
  3.  
    420swed

    420swed Well-Known Member

    how warm do u think it would stay if i made a big box with the 250 hps light on top and foiled it all ?
  4.  
    weezer

    weezer Well-Known Member

    what are you doing
    what country you in
  5.  
    the widowman

    the widowman Well-Known Member

    get one of those grow tents man.:peace:
  6.  
    420swed

    420swed Well-Known Member

    canada the temps are around 11-14 Celsius and at night it goes down to minis 5 -10
  7.  
    smokeh

    smokeh Well-Known Member

    it says in the grow faq!

    dont let it drop below 50F night time temps. dont go above 85F day time. dont go above 95F if ur using c02
  8.  
    cheetah2007

    cheetah2007 Well-Known Member

    15 celsius is the min
  9.  
    hockey4496

    hockey4496 Well-Known Member

    w/ that 250w hps in an 8x8 room you may be ok with a plant or 2..and that may actually keep the room warm enough in that cold temp at night if you don't have exhaust, but then u need co2 injection.
    ps dont use foil, use some white paint or white reflective board
  10.  
    weezer

    weezer Well-Known Member

    you must be in awarm part it is 3c at my place now
    so let me get this straight you are growing a/some plants inthe 8x8 room tha once they are big you are going to put them outsde ????
  11.  
    420swed

    420swed Well-Known Member

    No iam vegging my plant is my closet right now then when i begin to flower iam moveing it in my 8x8 room
  12.  
    the widowman

    the widowman Well-Known Member

    put one of those grow tents in the middle of your 8x8 room then heat the room at night with a heater this should help the plants stay at 70 degrees. go to any hydro online shop and check them out.
  13.  
    xcyraxx

    xcyraxx Well-Known Member

    im growing planted in august ad the temps have dropped to 53 degrees at night and my plant looks like a monster but it is also really bushy and has a huge talk so its pretty hardy
  14.  
    420swed

    420swed Well-Known Member

    alright i will look up those tents now
  15.  
    xcyraxx

    xcyraxx Well-Known Member

    the better question would be how cold does it have to be when it frosts
  16.  
    420swed

    420swed Well-Known Member

    those tents r way to expensive for me right now and yeh i need to flower for at least 2 months and there will be snow on the ground by then so if i get heaters should it be fine?
  17.  
    xcyraxx

    xcyraxx Well-Known Member

    yeah a space heater but have fun runnin an electric bill out the ass...
  18.  
    weezer

    weezer Well-Known Member

    mid 70s is good with no more than 10 swing to the cooldest
  19.  
    the widowman

    the widowman Well-Known Member

    try ebay.com there will be really cheap growtents there. cause a tent in the middle of the room is the only way your gonna have good temps. :peace:
  20.  
    hockey4496

    hockey4496 Well-Known Member

    how many plants you growing? you should be able to find a small tent that would fit atleast a few plants for under $100 if you look around...that will solve your temp issue no doubt, and you will get your money back when they grow nice and healthy.

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