jfizzle2cmu said:

I think there is a pic or thread from overgrow on here as well as a cpl more, but not 100% on that. I vaguely remember stumbling across it some while back. Though I do think there should be a new one with only true-breeding strains in circulation that people on the farm are actually growing/breeding.

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I would say that if you want to grow/breed some very stable strains, you may want to start with some Landrace selections. I keep a Afgan strain in my rotation that is very stable, always tests between 19.5%-21% and is also fast flowering and very good yielder. Crossing 2 different landraces can sometimes produce some very vigorous plants for you also.