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Are we sure it was by natures design, or were our ancestors responsible for drug cultivars being stronger than Ruderalis?
Even the landraces of old, had been worked for countless generations. Human kind, have had a role in the evolution of Cannabis for thoughsands of years.
As far as I am aware, Ruderalis doesn't grow anywhere near traditional hotspots for landrace genetics, and evolved in an inhospitable environment away from much of our ancestors.
Perhaps, we didn't play a big enough role in bringing out it's ability to be used as a drug cultivar, until recently. Even super potent drug varieties will inevitably become "watered down" and lose many of the attributes we cherish, when they go feral and are left to grow wild without human intervention.
Don't get me wrong. If one is playing with auto/Ruderalis genetics, they should definitely pay close attention to their breeding, as not to double up on negative traits; such as low potentcy or cannabinoids.
Diesel840