Temp Manipulation to induce Ripening

ComfortablyNumb · Jun 18, 2021

Another thread got me to thinking:

Outdoor temps fall in the fall/autumn.
The falling temps in the wild help push the plant towards full bloom.
We keep out tent in the low 80's during the day and low 70's at night until the second half of flower. Then 60 at night and low 70's in the light.
This should be copying a stressor and inducing it to make more trichs and ripen faster. Anyone disagree or agree? Why?

Aqua Man · Jun 18, 2021

ComfortablyNumb said:
Another thread got me to thinking:

Outdoor temps fall in the fall/autumn.
The falling temps in the wild help push the plant towards full bloom.
We keep out tent in the low 80's during the day and low 70's at night until the second half of flower. Then 60 at night and low 70's in the light.
This should be copying a stressor and inducing it to make more trichs and ripen faster. Anyone disagree or agree? Why?

I think high temps can delay ripening.. im not sure if low temps can speed up ripening but sounds plausible... I just don't know

ComfortablyNumb · Jun 18, 2021

I wonder if there is any research on this.

ComfortablyNumb · Jun 18, 2021

Oh My Goodness. Has everyone read this? On the first page I see the questions answered.

The Cannabis Ripening Process: Steps, Stages & My TOP 12 Natural Bloom Enhancers — Ed Rosenthal

Learn all the details about the cannabis ripening process in this visual guide & discover my favorite marijuana bloom enhancers.

www.edrosenthal.com

Ponky · Jun 18, 2021

I think you just get bud rot. I think to hasten ripening you can give 14 or even 16 hours of darkness.

OldManRiver · Jun 18, 2021

I don't see Ed really directly addressing the effects of cold on the plant. As an outdoor grower, I observe an acceleration of flowering that is coincident with decreasing temperatures. The cold temps at the end turn buds purple. I always leave a few colas of plants to make this happen, because they are cool looking. I haven't noticed any increase in potency. I think hot, bright sun is going to have the highest UV, and UV definitely has been shown to increase potency significantly.

The main problem as it gets cold is staving off bud rot, which takes hold easier as the weather cools and the buds don't dry off during the day. It's always a race between maturity and mold here in the PNW. Actinovate is my friend.

ComfortablyNumb · Jun 18, 2021

I don't type well.

I meant to say I see 10 different questions answered on the first page.

I did find a USDA study that says plants (fruits) ripen faster due to colder temps. I didn't read the entire brief, but it seemed to be limited to fruiting plants.

Aqua Man · Jun 18, 2021

Ponky said:
I think you just get bud rot. I think to hasten ripening you can give 14 or even 16 hours of darkness.

I think it's the other way around personally but I caution that I'm not 100%.

The reduced photo period will initiate flower. At the end say last 10 days I believe an increased light period will speed up ripening and by that time reveg is not an issue

ComfortablyNumb · Jun 18, 2021

Many growers have dehumidifiers just to prevent bud rot in lower temps.
This seems to be a common technique, using Temp to help force ripening.

Aqua Man · Jun 18, 2021

ComfortablyNumb said:
Many growers have dehumidifiers just to prevent bud rot in lower temps.
This seems to be a common technique, using Temp to help force ripening.

Yeah climate is a big part.... look at places like Michigan. Lots of rain and the temps drop.

Good maintenance of humidity and airflow are important.

ComfortablyNumb · Jun 18, 2021

OldManRiver said:
1. I don't see Ed really directly addressing the effects of cold on the plant. True, I need to be more careful with my typing. I don't always have time to go back and fix it.

OldManRiver said:
As an outdoor grower, I observe an acceleration of flowering that is coincident with decreasing temperatures. Yeah, even the USDA report I saw seemed to adhere to fruiting plants. I've seen nothing by anyone to indicate one way or another, but ofttimes enough anecdotal evidence is good enough for a generalization. Don't you think so? Probably half the growers I know change temps. That seems significant.

OldManRiver said:
The cold temps at the end turn buds purple. This is a well known response. Anthrocyains are responsible.

OldManRiver said:
I think hot, bright sun is going to have the highest UV, and UV definitely has been shown to increase potency significantly. Can't argue with that.

OldManRiver said:
The main problem as it gets cold is staving off bud rot, which takes hold easier as the weather cools and the buds don't dry off during the day. It's always a race between maturity and mold here in the PNW. Actinovate is my friend. Lots of dehumidifiers in use for that reason.

Dr.Green55 · Jun 18, 2021

Well I said quite a few times on here I think cold is probably the best method for driving Resin, terps, flavor etc. I've been using it to do so for a very long , but its more then just throwing cold in your room. its an understanding of how to use it, what gets cold whats doesn't etc. I learned I can bring the temps very low using a specific method that works for me. like anything you'll see different results with different strains etc but overall I never found a strain it didn't work on. I'm sure there is more articles about this but here is one, read where it says taking advantage of the cold in cannabis. as specific to quicker ripening I don't find it gains you much. but if combined with a method to give the plant more energy then your talking.

The effect of cold on cannabis plants

In this post we show you which methods you can use to avoid the cold in an indoor cannabis crop. There are various modes to keep a stable temperature during the winter so you can choose the resolution that best suits to your indoor or greenhouse crop for personal use.

www.alchimiaweb.com

OldManRiver · Jun 18, 2021

I don't see Ed really directly addressing the effects of cold on the plant. As an outdoor grower, I observe an acceleration of flowering that is coincident with decreasing temperatures. The cold temps at the end turn buds purple. I always leave a few colas of plants to make this happen, because they are cool looking. I haven't noticed any increase in potency. I think hot, bright sun is going to have the highest UV, and UV definitely has been shown to increase potency significantly.

The main problem as it gets cold is staving off bud rot, which takes hold easier as the weather cools and the buds don't dry off during the day. It's always a race between maturity and mold here in the PNW. Actinovate is my friend.

Temp Manipulation to induce Ripening

Temp Manipulation to induce Ripening

ComfortablyNumb

Aqua Man

ComfortablyNumb

ComfortablyNumb

The Cannabis Ripening Process: Steps, Stages & My TOP 12 Natural Bloom Enhancers — Ed Rosenthal

Ponky

OldManRiver

ComfortablyNumb

Aqua Man

ComfortablyNumb

Aqua Man

ComfortablyNumb

Dr.Green55

The effect of cold on cannabis plants

OldManRiver

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