one with high levels of THC, one which is more fibrous and has higher levels of CBD, one that is an intermediate between the two, another one with high levels of cannabigerol (CBG), and the last one almost without cannabinoids.

There has also been a recent movement to characterize strains based on their reported subjective effects.

Legality

Plant breeding is subject to a different set of rules and regulations, at times contradictory. The International Union for the Protection of New Varieties of Plants (UPOV Convention)

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