Between January and the beginning of December 2013, security services in San Diego seized around 120,000 marijuana plants that were illegally grown in the county. The plants were seized from 113 different grow sites. The marijuana raids resulted in 89 arrests, with 58 grow sites located outdoors and 55 indoor growing operations.
Nearly 75 percent of the indoor marijuana growing sites involved hash-oil extraction, which has caused large explosions in several drug labs in Southern California. The process involves mixing marijuana with butane to extract oil from the weed that results in a form of liquid cannabis. The liquid offers users a stronger dose of marijuana and provides a high that is much stronger than a user would receive from smoking.
Source: “DEA: 120,000 marijuana plants seized from 113 grow sites in San Diego area since January 2013,” San Diego 6, December 9, 2013.
Source: Leticia Juarez, “Hash oil extraction is a growing, dangerous trend – officials,” ABC 7, October 21, 2013.