KGB - It appears that there is some misinformation about the term “KGB” when it comes to medicinal marijuana. Back in the day there were two types of bud, brown bud (Schwag) and green bud (Killer Green Bud or KGB for short). Somewhere down the line Vancouver Island Seed Company produced a strain called KGB that is a cross between the strains Afghani and Burma. VISC spent a good deal of time breeding KGB strain through multiple generations until they were satisfied with the end result. Their hard work paid off as it is quite easy for even a novice grower to pull three ounces from a 3ft plant. Growing KGB Marijuana Has Medical Benefits.