THC and MARIJUANA
Cannabis plants produce psychoactive ingredients called
cannabinoids. The main ingredient of the cannabinoids that gives the
high effect is called -delta 9 THC. All strains vary in THC levels that
come in different percentages. Some plants may contain 100% THC
but the “levels” of THC may be low. Other plants have only 60% THC,
but the “levels” of THC may be very high. A good potent plant will
have both levels and quantities very high. Cannabis plants also
produce something called -delta 8 THC. This ingredient is in low
levels but does contribute to the high. When we mention THC levels,
we are talking about both delta 8 and 9 THC.
There are also other ingredients that add to the high such as
CBD, CBN, THCV, CBDV, CDC and CBL, but are only very minor
compared to THC.
The difference between THC levels and THC quantities is that
THC levels are genetic. They are not under the influence of the
grower. THC quantities on the other hand are. This is to do with bud
mass and how much resin can be generated in that bud mass.
Some bud may only contain 20% THC, with a THC level of 5.
The same plant grown under better conditions and light will produce
70% THC, with a THC level of 5. The ‘5’ is genetic. The quantities of
20% and 70% are under the grower’s control.
When examining a strain in a seed-bank catalogue one is
guided to check for the THC levels of that plant to understand how
potent the plant is. Many seed sellers and breeders measure their
plants THC levels and give accounts on how much THC their plants
have. Of course many breeders like to exaggerate on how much THC
their plants produce, but some do not. If you wish to know more about
THC levels it is best to consult your seed-bank or breeder for details.
No complete study of cannabinoids has been made public
since this book’s publication. This is because cross breeding produces
so many different results that it is hard to keep track on what is
happening. Some ‘old timer’ strains are still around and have been
tested. This information can be obtained from the larger seed
production companies in Holland. THC testing is also an expensive
process that requires heavy amounts of research.
The other interesting factor is that some plants do not produce
any THC at all. These plants have been genetically engineered (GM)
to produce very low levels of THC and are mainly used by farmers in
some countries who have permission to grow cannabis for hemp
production ONLY. It is best to keep away from these seeds and strains.
They will not get you high. There is project called the PMP (potency
monitoring project) that is carried out by some government-funded
agencies, but the results are questionable.
From the Cannabis Grow Bible By Greg Green


