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How susceptible to frost is cannabis?
- Thread starter Treevly
- Start date
T
Teddybrae
Oh ... Lake Erie. Well, I think St. Phatty posted about one of his that got covered by snow and survived.
I 've seen them turn purple from frost.
And ya gotta think: They grow very well in the Himalayas (eg: Hindu Kush.)
Lack of sunlight probably hinders their growth more.
I 've seen them turn purple from frost.
And ya gotta think: They grow very well in the Himalayas (eg: Hindu Kush.)
Lack of sunlight probably hinders their growth more.
My buddy was growing in the Catskill mountains in the mid 70's...
His plants got an inch or two of snow on 'em a couple of years and he told me he was worried, but then he said it made the plants even better...
if you're talking frosts around 20 F., you better cover them or get them in...
..
His plants got an inch or two of snow on 'em a couple of years and he told me he was worried, but then he said it made the plants even better...
if you're talking frosts around 20 F., you better cover them or get them in...
..
Treevly
Active member
Good points, thank you.
Treevly
Active member
Actually, the forecast is 32° for an hour or so at 05:00.
T
TakenByTheSky
I follow this guy on IG that travels around india, he has shown many pictures of the years of Indian landraces with icicles literally hanging off the leaves and buds and the plants are still alive.
Our modern hybrids have been so acclimated to the perfect indoor environment frost will kill most of them outdoors.
Our modern hybrids have been so acclimated to the perfect indoor environment frost will kill most of them outdoors.
We had a hard frost Last night I discovered frosted flowers...They defrosted and looked OK more purple even...It’s going to happen again tonight for one hour at dawn it’s going to dip below freezing
Cantharellus
Well-known member
Most can handle frost the problem to watch for is the bud rot this time of year. If they don't get good sun still they never dry out good during the day and the rot will set in.
Many plants can handle a certain amount of frost. Snow cover often actually insulates plants against lower temeratures.
What can damage frosted plants quite badly is if they get thawed out quickly in the morning sun - this is what ruptures the cells and destroys them more than the frost itself - so gardeners will usually site susceptable plants and things like greenhouses so that they don't get blasted by early morning sun and are shaded at that time so that the frozen plants thaw out more slowly with less damage.
The purple colour seen at these times is from the plants making anthocyanin - their natural anti-freeze .
VG
What can damage frosted plants quite badly is if they get thawed out quickly in the morning sun - this is what ruptures the cells and destroys them more than the frost itself - so gardeners will usually site susceptable plants and things like greenhouses so that they don't get blasted by early morning sun and are shaded at that time so that the frozen plants thaw out more slowly with less damage.
The purple colour seen at these times is from the plants making anthocyanin - their natural anti-freeze .
VG
troutman
Seed Whore
If you have plants in the backyard and you think a light frost will occur. Get out and mist the plants
and the surrounding soil will cause the frost crystals will melt. Even cold water is warmer than ice.
Having a plant misting system would be the best thing. Don't use hot water though.
https://frostprotection.weebly.com/the-science-behind-it.html
Freeze Protection Methods For Crops
Last year, I was at one of my guerilla patches misting the plants by hand.
It was nice seeing ice crystals melt in the early morning Sunlight from the
misting I was doing.
and the surrounding soil will cause the frost crystals will melt. Even cold water is warmer than ice.
Having a plant misting system would be the best thing. Don't use hot water though.
https://frostprotection.weebly.com/the-science-behind-it.html
Freeze Protection Methods For Crops
Last year, I was at one of my guerilla patches misting the plants by hand.
It was nice seeing ice crystals melt in the early morning Sunlight from the
misting I was doing.
Older plants do better then young plants. That said a couple years back a friend had some black tar paper on the ground near rotten seeded buds from the year before. They sprouted in late February with snow on the ground. Of course there was intense sunshine and the tarpaper absorbed the heat, radiated it at night. There's lots of tricks like that you can use, troutman's water trick is a good one.
Plants do okay with light frosts, once the temperature gets below 30 degrees F they don't last long. The duration is important, a couple hours at night is no big deal, a hard frost at 26 for half a day is fatal. Last year I left a Kashmiri landrace plant on my deck late until the end of November. I finally decided to harvest her after she turned into a budcicle. I could tell the frost was starting to destroy the plant tissue, you can see by how the leaves are drooping.
Plants do okay with light frosts, once the temperature gets below 30 degrees F they don't last long. The duration is important, a couple hours at night is no big deal, a hard frost at 26 for half a day is fatal. Last year I left a Kashmiri landrace plant on my deck late until the end of November. I finally decided to harvest her after she turned into a budcicle. I could tell the frost was starting to destroy the plant tissue, you can see by how the leaves are drooping.
Im'One
Active member
Very good info. I have two romulan grapefruit plants that are late bloomer phinoes and I thought were male! They finally produced flower and I out them back in the screen porch. I'm going to put them in the green house. I think they have six weeks to go and we have frosts around the middle to end of October. Maybe I will be ok. They are too tall and lanky to go in my grow closetr. Besides it's full of Tashkent indicas!
TychoMonolyth
Boreal Curing
Great solution.If you have plants in the backyard and you think a light frost will occur. Get out and mist the plants
and the surrounding soil will cause the frost crystals will melt. Even cold water is warmer than ice.
Having a plant misting system would be the best thing. Don't use hot water though.
https://frostprotection.weebly.com/the-science-behind-it.html
Freeze Protection Methods For Crops
Last year, I was at one of my guerilla patches misting the plants by hand.
It was nice seeing ice crystals melt in the early morning Sunlight from the
misting I was doing.
TychoMonolyth
Boreal Curing
Same here. Last year my Swazi took 4 or 5 hard frosts and two freezing nights. The last one had snow. I harvested the next weekend after the last freeze in November. The fan leaves took a beating, but the buds sparkled like diamonds.
My Freakshow are all but dead with a few cold nights without frost. Zero seed maturity
This is definitely an indoor strain up here.
radioman
Active member
Let's see - 29F on Saturday morning, 30F on Sunday morning and 29F this morning (Monday). I checked on some yesterday - not for frost damage but thief damage (none from either). I got my plants in the Forest but my neighbor (a young guy) had his in the backyard. He has been covering the last couple nights but now I notice that he picked them this morning. He had some nice plants but they weren't done yet. I would have left them. Often times (I think anyway) - People will justify picking their plants early - Better get them before the frost, Better get them before somebody else gets them, Better get them before the Law, etc - I have done it myself...
