Landrace varieties of marijuana are very interesting. If you are looking to have plants that are top-of-the-line, you are better off going with a hybrid, or a well Worked Landrace line. But it’s pretty cool buying seeds from a place you barely know anything about, and seeing what their local culture has come up with for a weed strain. And you never know, you might strike gold and end up with something no one else has. Landrace plants make excellent breeding stock too once you have turned them into an inbred line.
Even the Ruderal( feral) Plant’s offered at quick seeds can be valuable in a breeding program. Many have autoflowering traits, disease resistance, pest resistance, and resistance to one or more elements such as cold or dry. On top of that, many of them flower early in the season, and reach a sizable stature in a short amount of time. Many useful traits for a northern breeder.