Why would THC be good for the plant? Sure it get YOU high, but its not like it takes THC to make THC. Its A LOT more complicated process than that. Just treat your plants right, and they will reward you.

I've heard lots of crazy suggestions about increasing yields / potency, but the crazy ones never work.

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When someone asks 'Are you ticklish' it doesn't matter if you say yes or no, cause they're going to touch you. You should say something like 'I have diarrhea...and yes, I'm very ticklish' - Demetri Martin