FROST: general rules from experience....

crazykiwi420

crazykiwi420

Well-Known Member
So your latitude is 37.4? same as mine but south.
http://en.wikipedia.org/wiki/Tauranga can you please look at my average temps. My Malawi sativa is due late may or might even dip into june.

You give me hope for the Malawi, mine is not in a greenhouse though. crazy how they survive through snow conditions, must grow some hardy strains.
 
Abiqua

Abiqua

Well-Known Member
^ Thanks for bringing this up.....Im at 45N by the way, halfway! I am going to do some Malawi cuts outside starting here in a few months. Kind of rainy but the Malawi mother I was gifted, is usually farther north and endures more rain outside and seems to do pretty well.

I was thinking that Malawi probably has mountainous areas and rain, so not all sativa's just sit out in the sun all day. That has always been my thoughts anyway, until I consulted the atlas and stopped being a lil ignorant :peace:
 
crazykiwi420

crazykiwi420

Well-Known Member
Which breeder did that Malawi cut come from?. Malawi gets pretty hot apparently, not to sure about the rain but I hear Malawi is extremely resistant to rain and moisture.
Sativas have adapted to wet conditions hence the airy loose buds?.

I'd be more worried about the temperatures than rain. Last year was the best season, this year sucks for me. only getting 22-23 degree days with 11-14 degree lows, plants aren't doing much compared to last season.

I'm making f2 Malawi seeds this season to adapt them to my climate for next year.
 
entertainer1224

entertainer1224

Well-Known Member
Idk remember where I had read this fact but supposedly if you water your plants before an expected frost, then it will supposedly help insulate your plant. I live in northeastern Nevada and frost is a nightmare during spring and fall. unfortunately I didn't give any thought to the frost when dumping all my money into a greenhouse. I could have invested in an indoor setup instead. Lol. Noobie mistake.
 
beanzz

beanzz

Well-Known Member
I wish I could grow outside. Sometimes it snows in September up here :(

I'd love to be able to grow monsters outside like I used to do in Florida.
 
poplars

poplars

Well-Known Member
it could help a bit, growers of other fruits use sprinklers to prevent frost. but they run them all night.


an alternative is using fans all night.
 
W

waves2rip

Member
Laney said:
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:
Click to expand...

absolutely, my old timer buddy from Canada said they used to cracka bit the steams as the frost came in. a killer one/two punch to the plants. but, they defend! push all they got the their buds to survive. Darwin.
 
Delicious SweetLeaf

Delicious SweetLeaf

Active Member
A few years ago I had three plants outdoors in a guerrilla grow, and it hit freezing or a bit below freezing temperatures at least once, maybe twice, and my plants were fine.

I'm not professing that frost is good for the plants, or that it doesn't stunt the plant's development... I'm just offering my experiences.

The weather in Autumn is hit-or-miss around my region of the Northern Hemisphere... In early October it could warm right up with a brief "Indian Summer" that's sunny and in the 70's... OR it might not be so forgiving... For example, this late-Summer it's freakishly cool outside here, and the temperatures haven't really hit the 70s in weeks, and it's only mid-August! I am concerned about this because I have three Autoflowering little girls that I started outdoors a few weeks ago, and although they're vibrant and healthy, they've been pretty small, and I'm thinking that the not-so-warm Summer days and the surprisingly cool nights has (obviously) affected the soil temperatures, and therefore the root-structure, possible affecting their growth...

I'm chronicling all of my steps, which I am editing into a video series on Autoflowering From Late-Summer Through Early Autumn (working title), so I'll be offering those for the canna-community to perhaps learn from and enjoy.

If the weather continues in this way (which I am optimistically expecting that it will NOT), then...

Well, we'll just have to wait and find out!

Great thread!
 
mike lanza

mike lanza

Active Member
poplars said:
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 ;)
Click to expand...
 
mike lanza

mike lanza

Active Member
poplars said:
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 ;)
Click to expand...
loos like my plant is starting too flower the bud looking purple and pinkish flowering, dont know whatr starin it is, but is that good , another ? i live in pa and it gets cold as hell in fall, i was thinking of seting up a grow in shed outside but gets cold in there in fall, would that be an ideal place too grow for indoors
 

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snowdog203

snowdog203

Well-Known Member
Delicious SweetLeaf said:
A few years ago I had three plants outdoors in a guerrilla grow, and it hit freezing or a bit below freezing temperatures at least once, maybe twice, and my plants were fine.

I'm not professing that frost is good for the plants, or that it doesn't stunt the plant's development... I'm just offering my experiences.

The weather in Autumn is hit-or-miss around my region of the Northern Hemisphere... In early October it could warm right up with a brief "Indian Summer" that's sunny and in the 70's... OR it might not be so forgiving... For example, this late-Summer it's freakishly cool outside here, and the temperatures haven't really hit the 70s in weeks, and it's only mid-August! I am concerned about this because I have three Autoflowering little girls that I started outdoors a few weeks ago, and although they're vibrant and healthy, they've been pretty small, and I'm thinking that the not-so-warm Summer days and the surprisingly cool nights has (obviously) affected the soil temperatures, and therefore the root-structure, possible affecting their growth...

I'm chronicling all of my steps, which I am editing into a video series on Autoflowering From Late-Summer Through Early Autumn (working title), so I'll be offering those for the canna-community to perhaps learn from and enjoy.

If the weather continues in this way (which I am optimistically expecting that it will NOT), then...

Well, we'll just have to wait and find out!

Great thread!
Click to expand...
I think we are in the same spot, I have a small plant that has been in ground as a volunteer, all summer. Yeah it is very weird cool weather this summer, the plant is keeping small which is good, guerilla wise. It is a F1 or F2 of WW. The P1 WW did survive a couple good frosts that wiped out a lot of other plants in the garden. Not sure what I am gonna do, may have to transplant indoors, the WW F1 probably won't be ready till December or later. I am really growing casually cause, if I needed the bud I'd be getting my lights and soil ready now for transplant and a solid few months of indoor growing. oh well I am enjoying this thread "the frost is coming".
 
snowdog203

snowdog203

Well-Known Member
OldPork said:
Even a light frost for a couple of hours and your trichome heads will burst. I know first hand using a handheld microscope.
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I will try and get a camera attached to my lab microscope, my plants are definitely gonna get hit, if nothing else I'll get some good pix. : )
 
danknugg

danknugg

Well-Known Member
Greens1 said:
OK, so i am a somewhat good grower (good dank) and live in central california. However, i never tried a test run to see if a plant could survive outside throughout winter. Our temperature never gets below 40 throughout all winter. I am aware that my plants would probably flower very early and i dont think this would be a problem because i will be cloning and constantly changing mother and clone plants. Do you guys think that i could grow in Dixie Cups, to 3 gals. to 5 Gals containers in the winter here?? thanks
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Laney said:
I'm definitely putting up a gazebo to grow in for next year to be able to cover in case early frost is a threat. I am looking forward to a more manageable grow, lol.
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They have 10×20 ft carports made of metal for 150$ @ harbor freight.
 
U

ULEN

Well-Known Member
Yeah, I gave it a shot last night and it worked just fine. They had some that were fit to size in diameter for half the price but I went with the larger option. You might just want to prop something above your plants so the material doesn't sit above the buds. The plant was coming down and the blanket just enforced the decision because I just threw it over her.You can imagine how beat down it looked in the AM.
 
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