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Fresh cannabis plants are around 80% water (all %'s by weight); curing generally begins after the cannabis has lost half of it's initial mass, and contains approximately 33% of it's initial water.
(See Table 6.) For example, California contains 13.25% of annual marijuana users in the United States according to the National Survey on Drug Use and Health but also accounts for 38.68% of the marijuana produced in the United States, a ratio of production to use of 2.92.