Don't we all want to know? If you are like me, you don't want to be growing year round but hate forking over $125 for 1/4 oz of quality bud. So, before this current grow, I calculated how much I would need for say 4-6 months and my plan was to grow until I stored that much then quit growing for about 4 months. My research revealed a range, dependent on growing conditions, of course. But, all things being equal, one can expect ON AVERAGE, about 33.7g dry per plant or 1.19 oz. I'd be ecstatic if I yielded an oz a plant. More realistically, I'm shooting for 1/2 oz per plant. Very doable.
I've posted the links to 2 of my sources below. Happy Growing!
Blackwell Synergy - J Forensic Sci, Volume 51 Issue 5 Page 1050-1054, September 2006 (Article Abstract) Drug Policy Alliance: Cannabis Yields 1992: Drug Enforcement Administration