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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.
How Long Does Marijuana (THC) Stay In Your System? Marijuana (Cannabis) is widely regarded throughout the world as the most commonly used recreational drug. As of 2015, it is estimated that nearly 50% of residents in the United States population have ingested marijuana at some point throughout their lives.