Lowest possible groing temp at night?

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Dankp1kachu42O

Member
so im new to all this and have had no issues with my ladys or sexing my plants humidity has been good to me but im concered about the temperature. Durring the day light is on and temp. is around 63 but at night it drops to about 57 degrees. Im told getting the pots off the floor will increase temp a bit but my question is , is it too cold or can i get away with 57 degree nights?
 
Geordie_John

Geordie_John

Well-Known Member
I'm only a newbie but from what I understand anything under 59 could stunt growth. Can you not run your lights at night rather than during the day. This should help.
 
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Dankp1kachu42O

Member
Tried that and still same outcome its winter and carport tends to stay cool either way im not worried about stunting growth im more worried about weather itll survive
 
Geordie_John

Geordie_John

Well-Known Member
In my mind I think I would monitor them and see how they cope, some strains will be more hardy than others. Otherwise you may have to look into some sort of heating but I would wait for somebody with more experience to give you some advice. Good luck whatever you do
 
Bukvičák

Bukvičák

Well-Known Member
Beside the slower growth, you can face nutrient uptake issues, important is temp in the root zone, once it goes below 16celsius, than issues ussually become to show up.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
Dankp1kachu42O said:
so im new to all this and have had no issues with my ladys or sexing my plants humidity has been good to me but im concered about the temperature. Durring the day light is on and temp. is around 63 but at night it drops to about 57 degrees. Im told getting the pots off the floor will increase temp a bit but my question is , is it too cold or can i get away with 57 degree nights?
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Get a heater. You're already starting behind with no experience, you're only handicapping yourself further with a poor environment.
 
Lordhooha

Lordhooha

Well-Known Member
Dankp1kachu42O said:
so im new to all this and have had no issues with my ladys or sexing my plants humidity has been good to me but im concered about the temperature. Durring the day light is on and temp. is around 63 but at night it drops to about 57 degrees. Im told getting the pots off the floor will increase temp a bit but my question is , is it too cold or can i get away with 57 degree nights?
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Past 65 honestly is not good at all. Get them somewhere warmer ASAP
 
Moldy

Moldy

Well-Known Member
The cold isn't the issue. Plants can take very cold temps, for a short period of time. I go down to 50-55 some nights but you got to have warm temps all day (77-79F) otherwise your dirt will not warm up and the growth will diminish to a crawl.
My heater comes on an hour before lights on and it's 78F when lights come on. The heater also comes on for 15 minutes 4 times during lights off. It doesn't get real cold here at night, 15F coldest, average 25F at night during winter.
 
Funkentelechy

Funkentelechy

Well-Known Member
Dankp1kachu42O said:
Tried that and still same outcome its winter and carport tends to stay cool either way im not worried about stunting growth im more worried about weather itll survive
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As an outdoor grower, I can say without hesitation that cannabis can survive 57 degrees, no problem. They can usually survive freezing down to about 28 degrees(+ or - depending on humidity) before they start to take damage. Where I live, even during the summer it's common for temps to be lower than 57 at night, and even lower durring the spring/fall.
Personally, I feel that the temperature fluctuations that outdoor plants experience are part of the terroir of a growing region and is part of what makes outdoor cannabis interesting.
However, as others have said it is not optimal for max growth. Your nutrient uptake will slow to a halt during the cold periods and you will get better growth if you can get your nighttime temps up. I would be more concerned about your day time temps, 63 is too low.
They make tiny oil-filled radiating heaters, https://www.staples.com/Optimus-H-6003-Portable-Mini-Oil-Filled-Radiator-Heater-White/product_1460592?ci_src=17588969&ci_sku=1460592&KPID=1460592 that might work for you.

Your plants will be fine at that temp at night, but they will grow bigger, faster, with warmer night temps, and your daytime temps are too low IMO.
 
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thumper60

thumper60

Well-Known Member
Funkentelechy said:
As an outdoor grower, I can say without hesitation that cannabis can survive 57 degrees, no problem. They can usually survive freezing down to about 28 degrees(+ or - depending on humidity) before they start to take damage. Where I live, even during the summer it's common for temps to be lower than 57 at night, and even lower durring the spring/fall.
Personally, I feel that the temperature fluctuations that outdoor plants experience are part of the terroir of a growing region and is part of what makes outdoor cannabis interesting.
However, as others have said it is not optimal for max growth. Your nutrient uptake will slow to a halt during the cold periods and you will get better growth if you can get your nighttime temps up. I would be more concerned about your day time temps, 63 is too low.
They make tiny oil-filled radiating heaters, https://www.staples.com/Optimus-H-6003-Portable-Mini-Oil-Filled-Radiator-Heater-White/product_1460592?ci_src=17588969&ci_sku=1460592&KPID=1460592 that might work for you.

Your plants will be fine at that temp at night, but they will grow bigger, faster, with warmer night temps, and your daytime temps are too low IMO.
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A inground plant can handle low 30s easy because roots are warm under ground, leave one in a 5 gal bucket at those temps wont make it.
 
Funkentelechy

Funkentelechy

Well-Known Member
I know Ganjagurl(I think I spelled that right) grows in homemade pots and deals with below freezing temps. But, then again the pots still sit on the soil which acts as a thermal mass.
Long story short, your plants won't die at 57 degrees, but, you should bring your temps up.
 
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Dankp1kachu42O

Member
meangreengrowinmachine said:
They will live, but not thrive
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Thats what i figured im in no rush for growth i mean they are already in beggining bloom blooming
Lordhooha said:
You're going to need one
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Others have made a good point on here saying the afgani mountains get well below 57 degrees at night and they grow plentifully not too sure if i actually "need" a heater .i have one but the plants arent showing any signs of issues so im gonna hold off on the heater unless temps drop below 50 drastically.
 
meangreengrowinmachine

meangreengrowinmachine

Well-Known Member
Dankp1kachu42O said:
Thats what i figured im in no rush for growth i mean they are already in beggining bloom blooming

Others have made a good point on here saying the afgani mountains get well below 57 degrees at night and they grow plentifully not too sure if i actually "need" a heater .i have one but the plants arent showing any signs of issues so im gonna hold off on the heater unless temps drop below 50 drastically.
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Hey if the plants are growing and you're good with the rate they are growing sounds like you're all good!
 
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