How much THC is there in pot?
Just as harvest time depends on the individual strain as well as the individual growing it, so too does THC content. As Browner puts it, "normally when you grow cannabis, you can maybe get your percentage of THC to be between 15 and 27%. If you're at 27%, you're a rockstar."
This is only true for standard, cured marijuana, though. If you look at cannabis in its concentrated form, you'll find a product that's far more potent, containing anywhere from 50 to 95% THC. This purer category includes all the waxes, shatters, and oils used for dabbing, a method of consumption that's explained at greater length right here.