Tektek
Well-Known Member
Cannabis is one of the first plants cultivated by humans. I think classification is simplified by using 4 species. Cannabis ruderalis, C. indica, C. sativa and C. hemp.
C. ruderalis has origins in central Asia. Usually less than 2 ft tall, spindly, auto-flowering, maybe 1% THC and CBD. It could be the ancestor of the other species. Natural and human selection created land races adapted to different latitudes and climates.
C. indica, usually less than 4 ft tall, conical, dense foliage, compact buds, high THC, about 1% CBDs. C. indica ‘afghanica Clarke’ evolved for a long time at about 35 deg N, in a dry climate, slightly acid to slightly basic soils, often calcareous.
C. sativa, usually more than 4 ft tall, open branch and foliage structure, loose buds, high THC, about 1% CBDs. Adapted to sub-tropical latitudes, wetter climate, somewhat acid soils with lower nutrient concentration. More resistance to mould is a recessive trait.
C. hemp, usually very tall, little branching, loose buds, high CBD, about 1% THC. Many land races adapted to different climates and latitudes.
The chemical pathway for THC and CBD is either / or. The minor constituent is there because it’s chemical pathway is active at a very reduced rate.
New varieties/hybrids, almost anything is possible and the industry is a mess. A variety like ‘purple Kush’ from different seed companies or growers might be similar, but they usually have different chemistry and genetics.
More on how this relates to growing, soon.
C. ruderalis has origins in central Asia. Usually less than 2 ft tall, spindly, auto-flowering, maybe 1% THC and CBD. It could be the ancestor of the other species. Natural and human selection created land races adapted to different latitudes and climates.
C. indica, usually less than 4 ft tall, conical, dense foliage, compact buds, high THC, about 1% CBDs. C. indica ‘afghanica Clarke’ evolved for a long time at about 35 deg N, in a dry climate, slightly acid to slightly basic soils, often calcareous.
C. sativa, usually more than 4 ft tall, open branch and foliage structure, loose buds, high THC, about 1% CBDs. Adapted to sub-tropical latitudes, wetter climate, somewhat acid soils with lower nutrient concentration. More resistance to mould is a recessive trait.
C. hemp, usually very tall, little branching, loose buds, high CBD, about 1% THC. Many land races adapted to different climates and latitudes.
The chemical pathway for THC and CBD is either / or. The minor constituent is there because it’s chemical pathway is active at a very reduced rate.
New varieties/hybrids, almost anything is possible and the industry is a mess. A variety like ‘purple Kush’ from different seed companies or growers might be similar, but they usually have different chemistry and genetics.
More on how this relates to growing, soon.