| inserting myself into this thread... from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6312155/: "Many people who have voted for legalization thought they were talking about the marijuana of the 1960s to 1980s when the THC content was less than 2%. ... Prior to the 1990s it was less than 2%. In the 1990s it grew to 4%, and between 1995 and 2015 there has been a 212% increase in THC content in the marijuana flower. In 2017 the most popular strains found in dispensaries in Colorado had a range of THC content from 17–28% such as found in the popular strain named “Girl Scout Cookie.”2 Sadly these plants producing high levels of THC are incapable of producing much CBD, the protective component of the plant so these strains have minimal CBD. For example the Girl Scout Cookie strain has only 0.09–0.2% CBD." from https://medicine.yale.edu/news-article/not-your-grandmothers...: "... In 1995, the average THC content in cannabis seized by the Drug Enforcement Administration was about 4%. By 2017, it had risen to 17% and continues to increase. Beyond the plant, a staggering array of other cannabis products with an even higher THC content like dabs, oils, and edibles are readily available—some as high as 90%." |
As an anecdote, in the late 90s and early 00s, the higher potency stuff was quite prevalent in my circles. The low potency dirt weed was was basically worthless and we would only get it if we were desperate, but it was readily available.