It’s possible to increase resin and THC production in your plants, although only when they’re still alive; to do so when they’re dry would involve an alchemic process that we might deal with later on in a different article. Today we’re going to talk about how to raise the THC percentage in your plants. It’s known that there are no other plants in the world that are capable of producing THC; some can produce similar cannabinoids to CBG and CBD but there’s nothing similar to THC.  This chemical composition is found in the resin from cannabis plants which serves the purpose of protecting the buds from UV-B rays. It’s been proven that plants grown at higher altitudes show much more THC; sativa plants from Ecuador or plants high in the mountains of India have more THC than those grown much lower down; the difference in these crops is, apart from air pressure, the quantity of UV-B rays.

Every cannabis plant has a mission, and that mission is to reproduce and make sure its genetics live on. Once the female flowers have been pollinized, they start growing seeds. During this process the plant will have to defend its progeny from insects, animals, fungi, light contamination etc. This caused marijuana plants to evolve and develop trichomes that, thanks to their sticky resin, protect the plants from all sorts of attacks. The resin in these plants is where you’ll find the cannabinoids that we all love. CBG is the first cannabinoid that will develop, and the enzymes in the plant then degrade once they come into contact with oxygen, turning CBG into other cannabinoids like THCa, which is the acidic form of the famous THC cannabinoid. Once THCa has been decarbonized, it becomes THC, and THC will also degrade to CBN due to plant maturity or the fact that the resin can degrade due to atmospheric issues. Either way, the longer you wait the more of a narcotic effect you’ll get from your plant as the CBN count will raise.Increase Resin and THC Production

The quantity of resin and degradation of THC depends half on the strain that you’re growing and half on the actual crop conditions. This means that you can have the best strain in the world but if it isn’t grown properly the results won’t be that good, compared to a less well-regarded strain that has been grown in perfect conditions which can give an amazing resin yield.Increase Resin and THC Production

Factors that influence how much resin a plant will produce are the temperature, the lighting, humidity and water quality. The temperature is a basic factor for decent resin production and it should be between 28 and 17ºC. Some people say that lowering the temperatures as much as possible will increase resin production; it might make shorter and more compact trichomes but it will put a halt to bud production, although your plant will continue to mature it just won’t grow any new flowers. If temperatures reach 28º then some vital substances will be lost in the resin, like essential oils and some terpenes. The trichome will become taller to defend the buds from the heat, but they’ll be much weaker and more likely to fall off therefore reducing resin production. These parameters define exactly how the resin is going to develop.Increase Resin and THC Production

THC potency is decided, like we said before, by UV rays. There are three kinds of UV rays: UV-a, UV-b and UV-c.  Like we said before, the more UV-b rays that your plants get the more production they’ll have but with a lower quality resin than expected, as these rays are extremely damaging to the resin’s composition. A 12 hour light period will give your plants a much more potent THC level than a 10 hour flowering period. The more intense the light, the more THC your plants will have.

Indoors you’ll need to use bulbs that have this kind of UV ray and the right color spectrum, which is hard to do with just HPS lights. If you can afford the luxury of placing three lights at the same time we recommend combining one HM light and 2 HPS lights; this will raise the THC content but lower the final yield a bit, which is more or less the same thing that happens outdoors in high places like we mentioned before.Increase Resin and THC Production

Another important factor for resin production and THC grading is environmental humidity. Plants that have a dry environment tend to produce more resin as well as have a higher concentration of THC due to the fact that they have to protect their buds from dehydration. This pushes the plant to produce more protective trichomes and terpenes, increasing both intensity and taste. Of course these natural reactions happen because the plant wants to product the seeds inside the flowers, but it will still happen even if you’re growing all feminized plants with no pollinator due to how ingrained it is in the plants natural defense system. Generally, plants that are grown in higher and dryer areas tend to produce more resin and more THC, and those that are grown in humid conditions don’t fair nearly as well. Of course there are strains that do incredibly well in humid areas like Thailand and Cambodia.Increase Resin and THC Production

According to William. A. Embodem, insects can be used to deliberately attack the plants so that they raise their defenses in response to the stress, creating more trichomes and THC. This is similar to the legend about putting a nail in your plants stalk, which we do not recommend as you can cause your plant to get an infection and you might lose it. In theory it works because there’s a hormonal change in your plants whenever they’re extremely stressed; they would stop growing flowers but they’d also increase resin production as well as more terpenes and cannabinoids.

Now, it’s time to talk about some other myths that people use when trying to get more THC in their plants:

  • Watering with LSD – Apart from being useless, even if this was done people would end up selling some super psychedelic weed on the market.
  • Letting it die in the pot without watering it – One thing is controlled water stress, another is to let your plant suffer for no reason; this will actually lower THC production.
  • Drying it in the sun – If you do this the THC in your bud will oxidize almost completely until it turns into CBN.
  • Watering it with juice or soda before harvesting – Apart from the fact that your plants won’t have enough time to absorb it, you might end up overdosing it on sugar.
  • Burying it in soil – if it’s humid you’ll end up with fungus and maybe possibly lung infections, and if it’s dry you’ll probably be fine to smoke it but it definitely won’t do anything to the THC levels.
  • Pulling it out with the roots and boiling them – THC is in the resin, which is in turn in the buds, so doing anything at all to the roots is a bit silly.

Author: Fabio Inga
Translation: Ciara Murphy

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Erik Collado

With more than 10 years of background in the cannabis sector, his experience and knowledge are the base of GB The Green Brand’s success

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9 replies on “Increase Resin and THC Production”

“THC will also degrade to CBD” – THC DOES NOT DEGRADE INTO CBD. It degrades into CBN

The fact that that you have confused these cannabinoids, and are publishing false information, calls into question the accuracy of your entire article.

What other cannabinoids have you confused? Is any of this information correct?

Hi John.
I’m sorry for this inconvenience – it was literally a mistranslation on my behalf, a pretty normal mistake that I didn’t catch when revising the article.

If you check the original post in Spanish and the subsequent translation into French, both say CBN. Fortunately, we have no issue admitting when we’ve made a mistake, although I would like to point out that the mistake was human error, not confusing cannabinoids with eachother. Thank you for pointing out the mistake, which I will rectify asap. We always appreciate when our readers contribute to our posts 🙂

Have a great day!

Get new glasses John, or even open your eyes….. It says CBN!.
TuT TuT…

lol you went so deep. relax the author clearly made a translation error. guy sees typo throws whole world view into question. very entertaining post thx

resin production is for collecting pollen..herm out a single branch in your garden and see for yourself!! the plant gets sticky and smells wonderful as the plant tries to coax insects to bring them pollen..this is basic gardening

One of the more well-informed articles I have read.
I am 50 years old, been smoking daily for 32 years. I grew from 1994 to 2010.
It’s true, about UV light. Indoor, Medical Cannabis is a sad, sick capitalist joke.

Outdoor, was where I found the Magic. The same plants that were great indoors, were SPIRITUAL, and Godly, and Serene — when grown outdoors.
I grew in Chicago, Illinois vicinity, and I grew with a 1000 watt HPS, a 1000 watt MH, fluorescants, a light mover, a dehumidifier, and supplemental CO2.

My indoor barely matched my outdoor, but only because the indo was mature and the outdo was premie.

Its a good article I am glad you took the time to translate it. I found it much more in depth than most of the thc boosting articles I have read.

Thanks for taking the time to write and then translate the article for us Ciara. I found the info useful and reckon it’s also as factual as it gets.
For John Smith (is it a real name, I think not), to cast into question the whole article on the basis of one letter is imo quite insulting.

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