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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.
Hash oil has been found to contain 15% to 30% THC. The resin secreted from the plant can be dried to make hash, which is the second strongest preparation. Hash has THC concentrations ranging from 10% to 20%. The form with the lowest THC level is the dried buds and leaves of the plant, commonly known as marijuana.he way marijuana is grown can affect the amount of THC in the plant, and therefore its potency. Cannabis sativa is the species of plant that most commonly produces the drugs known as marijuana, hash, or hashish.