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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.
Any cannabis with higher THC levels is considered marijuana instead. In comparison, medical marijuana produces anywhere between 5-20% THC on average, with prize strains tipping the scale at 25-30% THC. Hemp and marijuana plants contain another important cannabinoid: CBD.