A Brief History of Cannabis Concentrates
Marijuana first appeared in China around 6000 BC and was first used as a food and textile source. It was first used in a concentrate around 1500 BC. Known as bhang: it was made from cannabis ground into a concentrated paste, then mixed with herbs and milk or ghee , or was used as a chewy blob and then eaten. Around the 12th century hashish - chunks of concentrated cannabis appeared in the Mid-East, this became very popular.
Hashish then made its way along the many trade routes in Asia and Europe, becoming a highly valued commodity.
Marijuana concentrates appear In the United States in the late 19th century. Using ethanol and alcohol the extracts were mixed with other herbs and sometimes sold as a "cure-all" for anything from baldness and typhoid fever to impotency and toothaches.
During the '70s and ’80s the U.S. saw vast amounts of cannabis grown for the first time. U.S. growers began to create the highest-quality Marijuana ever seen. Because of cultivation improvements and new extraction methods hash oil and other concentrate gained even more popularity.
California passed Proposition 215 in 1996, creating a semi-legal system which allowed cannabis to be grown. Concentrates now had a platform to be displayed and sold.
With more states allowing medical and/or recreational use growers with large amounts of non-marketable materials, such as trim and lower branch buds, found great value in these for creating marijuana extracts.
You can find a great article about cannabis extracts, oils and concentrates HERE