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https://www.reddit.com/r/microgrowery/

Dedicated to the cultivation of cannabis. We love pictures of your plants & harvest, discussing growing methods, and helping with grow problems.

I was also curious, so I did some googling.

From https://www.theweedblog.com/how-much-marijuana-does-a-mariju...:

> growing four plants using a 600-watt HPS lamp could produce about 150 grams or 5.0 oz per plant

Sounds like an upper bound.

Yield is a function of energy to the foilage that feeds the flowering buds. The largest bud is usually at the top of the plant since light tends to be placed above a plant. During flowering, if you can distribute energy more evenly among the foiliage, you can increase yield by ~ 1/3 or more. Outdoor growers are reported to attach a string to the top of a plant when flowering begins, and bend the plant in an upside down `U` in order increase light distribution.

Indoor (and outdoor) growing is a really fascinating, information-laden, brain-stimulating endeavour. For what it's worth, marijuana growers often learn and share really awesome info that's applicable to all kinds of grows. Loads of neurons firing over there.