when is cold too cold?

whitebb2727 said:

There is optimum temps of course.

My personal experience tells me a few things. I cut my teeth outdoors guerilla growing brick seeds. A lot of sativa's. Most have handled cold weather just fine, even in the 20's.

Do I think you need to grow in cold conditions? No. I do however think that cold spells effect the buzz. I personally think bud that has been hit by cold has a better buzz.

50's at night wouldn't worry me a bit. I've seen many a plant keep a trucking in colder temps.

Another thing is how fast they warm up with lights on.

I agree that cannabis has optimum temps to grow in. I'm also saying don't discredit the positives that cold imparts on cannabis.

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Connoisseurus Rex said:

A warmer air is a drier air because it is capable of holding more humidity. A colder air is a moister air because it takes less moisture to create a more humid environment.

That being said, I run a 70% humidity at the seedling stage because the plants will transpire less volume as they are smaller. Max volume for the plant, less volume for the room.

As they grow and the plants become bigger, they transpire more by volume. That's when I drop the room humidity down to around 40-50%. The RH of the room will remain at 70% because of transpiration. The plants alone are producing 10-20% (sometimes up to 30% depending on how many plants such as perpetual growing).

So if I took all the plants out of the room, humidity would drop by up to 30%. I will demonstrate this when they get bigger.

That means I am pushing those plants to max transpiration rates which increases all other production (photosynthesis and respiration).

Imagine it's 30 out and you are standing still. It's cold, right? Now imagine you're running a marathon in the same temp. You're going to sweat, right? Now how in the hell can you sweat and be warm in that cold of temps?

Plants are the same way. Just because they don't physically move, does not mean they are not working. They are running that marathon which increases their metabolism and all other plant functions.

Humidity is not the only factor alone. It requires a steady breeze to remove the boundary layer under the leaves to increase transpiration. It also requires light. Just because the room temp is 33 or 40 or 55, the canopy only, is warmed up from the lighting. My canopy is around 70-75 degrees in a 50-55 degree environment. That keeps the air dense and rich with oxygen and CO2, and the stomata wide open whenever the lights are on... Which allows them to transpire at max rate, increase photosynthesis to max, and increase respiration to max.

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unwine99 said:

No plant that has endured twenty degree weather and 'multiple hard frosts' during early to mid flower is going to be something that I'm going to smoke, period -- especially a sativa, which often tend to be leafier anyway. I grow for high-grade buds, not trich'd out leafy crapola.

If you or others enjoy the high from buds (if you can call them that) grown in cold weather, fair enough, but the final product isn't going to something harvested from a plant that has lived up to its full potential.

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2ANONYMOUS said:

Yeah lol i always wondered why Sativa strains grown near the Equator where its obviously also warmer tend to have Higher THC percentages then there cousins Indica's ???
yields are bigger, plants are bigger what gives ???

Rex ??? would really love your professional opinion

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2ANONYMOUS said:

Yeah lol i always wondered why Sativa strains grown near the Equator where its obviously also warmer tend to have Higher THC percentages then there cousins Indica's ???
yields are bigger, plants are bigger what gives ???

Rex ??? would really love your professional opinion

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whitebb2727 said:

Fair enough. I'm telling you some of the best bud I've had has been in cold weather. A pure sativa at that. It looked like any other sativa. It had large spear head buds on it. Nowhere did I say early flower. I'm I'm not saying full on cold all flower. Preferably at the last two weeks when putting on weight.

Cold weather won't cause leafy or spindly buds. Actually the opposite. Cooler temps cause hard nugs. Indica, cold climate cannabis, hard nugs. Sativa, warm climate spindly, foxtailed buds.

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2ANONYMOUS said:

You got it all wrong bud

https://budgenius.com/Hindu-Kush-Kern-River-Collective-BG0010001E647.html

i mean we can get into the hazes sativa strains that are over 21 percent THC
breeders tend to stabilize by adding indica's to which ever final goals they are trying to achieve
From less flower time , less stretch to shorter control able plants
But today with the basterdization of the gene pool we are left with very few Sativa's and indica's in original form Yes even trying to find a original land race unless you know a farmer in Jamaica chances are you will get a hybrid strain not a orginal land race but a mix

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2ANONYMOUS said:

To say hindu kush is most popular rings hollow its proven fact Sativa's have the most THC and lower CBD then there cousins up North where Indica's have higher CBD then there counter parts down south

Here is a ancestor to pretty much EVERY strain on the market today orginal Afganistan kush ,,
Da same dam thing i have had since 1978 thanks to immigration Your Hindu kush is just a fancy name that ken from sensi seeds named it and yes its a good stable line that is true breeding characteristics.. only diference is i know mine is real aganistan who da hell knows if the so called seeds people get are true if you catch my drift nice short bushy babies that grow around 5 - 6 feet tops View attachment 3588049

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Connoisseurus Rex said:

Yet you discredit the formula for photosynthesis that doesn't require temp? But I'm supposed to accept this chart?

Being picky on which info you want to be relevant is a bitch move of desperation.

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Connoisseurus Rex said:

Yet you discredit the formula for photosynthesis that doesn't require temp? But I'm supposed to accept this chart?

Being picky on which info you want to be relevant is a bitch move of desperation.

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Connoisseurus Rex said:

Optimum is what you, you're own personal preference, recognize to be right. I grow plants at low temps fine. You grow them at high temps fine. As long as both plants grow unaffected by temp, then the plants are growing at an optimum rate.

This is about the plants, remember? You're personal temp preference has no sway on what the plants can thrive in.

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nomofatum said:

You can't say it's no better or worse unless you test it, side by side preferably. The plants will adapt to some extent, but cooler temps are going to slow down the chemistry in the plant.

If all other variables are left the same and you only increase temp closer to optimal, yields will also increase closer to optimal.

There is plenty of evidence to close the book on cool temps being able to match the results of more optimal temps. The interesting place to look at cooler temps would be the resulting taste differences. At too high of temps taste gets horrible. Often fruits/vegetables get sweeter and tastier if left to go until temps get lower, I might believe that taste could be better on some plants in cooler temps, but you can't fight the laws of physics on growth rates in different temps.

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nomofatum said:

@Dr. Who Take it easy on the like button, lol 15 notifications in a few minutes. I like you too man, just not that much, lol.

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