High-CBD cannabis landraces. In drug-type Cannabis, aka subsp. indica, individual plants with significant levels of CBD are typically found within populations of landraces (i.e., domesticates) cultivated for traditional Cannabis resin, a product usually referred to as hashish or charas. For high-CBD chemotypes, the best cannabis landrace strains to search are those from regions such as the Hindu Kush, Himalaya, and Middle East. Studies have found that in authentic charas landrace populations often approximately 25% of plants can exhibit a high ratio of CBD to THC. For further information, see CBD in Cannabis Landraces.

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