Prior to the 1990s, the THC strength of popular strains was quite different from what it is now. THC levels in popular marijuana strains were around 4% in the 1990s. There was a 212 recent rise five years later, between 1995 and 2015. According to a 2017 study, a popular strain known as “Girl Scout Cookie” at a state dispensary had medical marijuana THC levels ranging from 17 to 28 percent. If you looked at any sort of cannabis THC content chart today, it would most certainly indicate that popular dispensary marijuana strains had THC levels of 22 percent or more. That may be a good thing or a bad thing. We’ll leave it to you to decide. To know a little more information, consult our Cannabis Coach…