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FROST: general rules from experience....

Discussion in 'Outdoor Growing' started by poplars, Oct 6, 2012.

  1.  
    poplars

    poplars Well-Known Member

    Lots of strains of cannabis can handle a pretty strong frost. I've had plants handle frosts as low as 28 degrees F without killing the plant.

    Things to consider, some strains are more sensitive to frost than others, if they are in pots this can make them more sensitive.

    Sativa strains tend to be more sensitive to frost than Indicas. Indicas and Indica dominant hybrids are capable of handling frosts as low as 28F. but there have been reports of sativas handling frosts just as well.

    I'll leave this sticky open to discussion for other experienced users to post their experiences, I will compile it into this. I felt this was needed as this question gets asked a lot when a frost comes by.


    you can protect the plants if they are of manageable size or if you are handy enough to build a sturdy setup.

    this can be as basic as a pvc greenhouse with plastic wrapped around, or even sheets if properly secured to not touch the plants... or as large as a full car port with greenhouse grade plastic secured.


    how much the temperature rises the next day also tends to define how the plant deals with the frost. if it frosts and it rises up to 65 degrees+ with sun in the daytime, the plant is much more likely to take the frost and keep growing vs a plant that takes a hard frost and sees a 45 degree day with clouds....


    cooler temperatures (55-40 degrees F) will definitely bring out some purpling in some strains, and cause flowering to speed up, nights that dip into the 35F zone boost this even more, bringing out even more color.

    sorry for the organization of this thread, guess I'm too much of a stoner after all ;)
     
  2.  
    Laney

    Laney Active Member

    It was 27 when I got up this morning so it may have dropped to 26 overnight. My plants did fine (sativa doms). I put some compost and extra mulch and am optimistic for tonight (again 26) ...
     
    EireAran420, marcospartida and Xub420 like this.
  3.  
    poplars

    poplars Well-Known Member

    nice, I guess that's more evidence in favor of sativa being frost sturdy as well.

    those plants are in the ground correct?
     
  4.  
    Laney

    Laney Active Member

    Yeah - I'll let you know how they fare tomorrow :)
     
  5.  
    ilovethegreen

    ilovethegreen Well-Known Member

    this year I chopped mine two days after first frost. got down to 24 with 30-40mph winds, after that they started dying RAPIDLY haha.yeah, when they're in the ground theyre more tough it seems. i just hate having to deal with the anxiety of when its going to freeze over
     
  6.  
    poplars

    poplars Well-Known Member


    yeah I've never let my plants go down to a 24 degree frost, I believe 27 degrees is probably the limit. possibly one or two degrees more but doubtful.
     
  7.  
    Laney

    Laney Active Member

    We went down to 27 last night again and I think they can handle that although they've been losing a lot of fans over the last couple of weeks. Every time we drop, more fall colors come out. We are having a lovely change of seasons. Fortunately, for the next couple of weeks we will be sunny with highs in the 60s and 70s so they may fill out a bit.

    I will say one thing for the cold ... when I checked yesterday, all of my plants had an astounding swelling of the trichs. The cold snap really put the plants on task :weed:
     
    Izoc666 likes this.
  8.  
    poplars

    poplars Well-Known Member


    yep it really does!
     
  9.  
    2d9s

    2d9s Well-Known Member

    if frost kills a plant, how long do you have to harvest it? or can you? are the buds still good after a plants dies a 'natural' death?
    thanks!
     
  10.  
    poplars

    poplars Well-Known Member


    while I have no personal experience to confirm this, I see absolutely no reason why the plant would lose all it's potency just because it died. just harvest it as soon as you can, when it's done its done!
     
  11.  
    poplars

    poplars Well-Known Member

    I could see it dramatically effecting flavor, and possibly effecting over all high slightly, but I wouldn't call the bud trash by any means.
     
  12.  
    ilovethegreen

    ilovethegreen Well-Known Member

    buds are still good after theyre frozen and dead. depends on how long they were dead...
     
  13.  
    Laney

    Laney Active Member

    I've never had frost kill a plant and I tend to leave them alone to ripen, weather or no. That's because, in most places, there will be one or two light frosts (like I just had) and then a clear spell, during which the plants will quickly ripen. I've lost a lot of leaves from these weather dips. The buds are fine, though. I guess it'll just make trimming easier :)
     
    codster25 and Happygirl like this.
  14.  
    2d9s

    2d9s Well-Known Member

    i drowned a plant (no holes in the container... ) and as it died, it began to smell like a rotting, very pungent, breakfast sausage - 4 weeks later the dead, white stem still smelt - hence the concern if a plant dies a (natural or other) death before being 'harvested' what the result would be...
    thanks for the first hand info.
    this week things are supposed to chill quite a bit here so im wondering what to do in case they wilt, die or if it will even come to that...
    thanks!
     
    Izoc666 likes this.
  15.  
    ilovethegreen

    ilovethegreen Well-Known Member

    I like to put a little 5x5 greenhouse-ish box over my plants if its not ready to take a frost. it helps keeps temps up quite abit
     
  16.  
    Laney

    Laney Active Member

    I would have loved to cover my plants but they were way too big (even though most were topped &/or LST'd). Still they only have to last a couple more weeks. I'll be cutting a couple within a few days. Including at least the top half of my 12-footer.
     
  17.  
    ExtremeMetal43

    ExtremeMetal43 Active Member

    Dude thank you so much for this thread...last nite was first frost and tonite is a freeze warning. I had thought when it frosted they were done. Its been around 35 at nite but dont expect high 20's for the next two weeks.
     
  18.  
    poplars

    poplars Well-Known Member


    no prob I know how it is being a scared newbie and a thread like this is a light in the darkness,glad it helped!
     
    Extacie and MerryJizzRain like this.
  19.  
    Laney

    Laney Active Member

    Your plants will be fine but it's definitely a very anxiety-provoking time. I've had light and hard frosts most years. I'm very stubborn about pulling early and my girls usually fare well. This year has been one of the worst, having gone down to 26 the other night (3rd and worst frost this year) but the gals are hanging in there.

    There is only one night that is expected to go to freezing (31) over the next couple of weeks a lots of sunny days (60s and 70) so I was reluctant to pull them and now they will enjoy some sun and finish to the max [​IMG]
     
    jacrispy likes this.
  20.  
    2d9s

    2d9s Well-Known Member

    the first frost of the year was on sunday night, i checked my pumpkin patch today - tuesday - and everything seemed fine. the temperature dropped to -1*c so it wasn't a hard freeze - the weather network also posted a frost warning. the only difference i found was that top colas were 'browned' and withered a bit but the rest of the plant parts (colas underneath, leaves, stems, roots etc..) seemed intact.

    here are two photos of the top cola of one of the plants. the first one is from friday (before the frost) and the next one is from tuesday (2 days after the frost).

    hope it helps as i had no idea what to expect as well...


    :weed::weed::weed:
     

    Attached Files:

    ExtremeMetal43 and Xub420 like this.

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