Does anyone have any data that shows lab test data of THC potency vs day of flowering? For example I would like to see a plot that shows on day 20 of flower (from 12/12) there is maybe 3% THC by weight, on day 40 there is 10% THC by weight, and on day 55 there is 20% THC by weight. Ideally there would be a data point for every few days into flower. Has anyone seen data like this or have access to a scientific study that has tried to track THC percent like this? I don't care what strain or how long the flowering time is for the strain, I am just wanting to see how the THC increases during the flowering cycle. I saw a plot like this from a breeder's website where they used this information and additional test results to select promising parents for breeding, but I can't find this plot anymore. I would also be interested in a similar plot that tracks terpene development.
THC potency vs day of flowering: any data?
- Thread starter beepy1
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Thundercat
Well-Known Member
I strongly believe that those data points would be different for every strain and garden. You can grow the same clones in 2 different gardens and they can turn out totally different. So while you could get data it wouldn't be generalized like your looking for.
If a breeder had a chart then either they tracked a specific strain and how the offspring of that strain compared, or it was just BS lol. Very possibly they tested clones of their strains throughout the grow and got some data for those specific plants in that grow. Sadly that data won't transfer to anything except that strain in a nearly identical grow.
If a breeder had a chart then either they tracked a specific strain and how the offspring of that strain compared, or it was just BS lol. Very possibly they tested clones of their strains throughout the grow and got some data for those specific plants in that grow. Sadly that data won't transfer to anything except that strain in a nearly identical grow.
jarvild
Well-Known Member
The problem is you don't have the right question. You're asking about THC when you should be asking about the precursors that develop into THC.
Thundercat
Well-Known Member
I'm pretty sure that is still gonna be specific to the genetics and the grow environment. With precursors I would believe more the genetics.
jarvild
Well-Known Member
Sure quite a few variables, There was a study awhile back that had max THCA production at 48-50 days, now that's not saying that production of THCA stops, just that's it's peak and slows from there.
Couch_Lock
Well-Known Member
Terpenes are a bigger factor then many think, THC is important but its not the only variable in the "high."
Thundercat
Well-Known Member
I'd love to see the study, I find it extremely hard to believe that a 14 week sativa strain will be at max THC production at 48 days.
I also find it hard to believe that extremely opposite genetics like pure indicas vs pure sativas will develop anywhere near at the same rate.
I could be wrong here, I'm always open to learning. But I also thought that most cannabis reached it peak THC potancy (like the OP asked about) basically right at harvest. Thats why we look for cloudy trichomes. So in that case again the length of harvest and the genetics become a HUGE factor!
xtsho
Well-Known Member
Sounds like they took tests from each plant at different stages which is basically the only way you could get any accurate data. You can't just chart the changes in THC levels and apply that as a standard. Each plant is going to be different. There are many variables that would effect the results as well.
There is no chart that shows the percentage of THC on day 20, day 40, day 50 that would be accurate for any plant except the one that was initially tested on those specific days. That data wouldn't be an accurate measure for other plants. It might be close but then it could be way off as well.
jarvild
Well-Known Member
I think you're misunderstanding me. Peak THC potency is compounding, THCA can stay viable for several weeks or longer with proper storage. I said nothing about max THC potential when finished.
That would be the curve he would be looking for, When THCA production falls under THCA degradation
Thundercat
Well-Known Member
I don't think I misunderstood, you were discussing production rate not total quantity. The OP asked about actual potancy at different days but I think we discussed both at this point 
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I'm saying that plants mature genetically at different rates. Sativas generally mature much slower then indicas for easy example. So I don't think it makes any sense that they would reach max production rates at the same points.
Again Id love to read the article if you find one. But you stated 48 day. An indica plant is at a way different stage of flowering at 48 days then a sativa.
. I'm saying that plants mature genetically at different rates. Sativas generally mature much slower then indicas for easy example. So I don't think it makes any sense that they would reach max production rates at the same points.
Again Id love to read the article if you find one. But you stated 48 day. An indica plant is at a way different stage of flowering at 48 days then a sativa.
MichiganMedGrower
Well-Known Member
I agree that every plant, room and grower could have different results. Even every time.
jarvild
Well-Known Member
Here is a more recent one.https://www.researchgate.net/publication/292944730_Evolution_of_the_Cannabinoid_and_Terpene_Content_during_the_Growth_of_Cannabis_sativa_Plants_from_Different_ChemotypesI don't think I misunderstood, you were discussing production rate not total quantity. The OP asked about actual potancy at different days but I think we discussed both at this point
I'm saying that plants mature genetically at different rates. Sativas generally mature much slower then indicas for easy example. So I don't think it makes any sense that they would reach max production rates at the same points.
Again Id love to read the article if you find one. But you stated 48 day. An indica plant is at a way different stage of flowering at 48 days then a sativa.
ttystikk
Well-Known Member
Too many variables, such as strain, lighting, temperature, nutrition, even training and RH.
Thundercat
Well-Known Member
That study says exactly what I've been saying. Different genetics reached peak levels at different points
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Thundercat
Well-Known Member
I didn't think you were arguing bud, just glad to see I was in line with the study .
I totally get THC vs THCa thing, I just don't usually differenciate unless it's needed.
jarvild
Well-Known Member
Yes, I tend to get a little in depth sometimes.
So there are no general trends? That was all I really wanted. Like maybe 5 weeks into flowering, are strains going to be closer to 0.1% THC or 15% THC. I can't imagine that different strains would differ by a huge amount, but if they do differ by a huge amount I would also like to see data on that. I am strictly asking about strains with a high THC-CBD ratio, as I know high CBD strain would differ substantially. Maybe I should have made that clear in my post.