I know that mold if a factor, but with air flow and say 70% relative humidity. Your not going to have mold, but I'm afraid a degradation of potency. Here are some references that I found on another post. This paper actually had tons of different conditions and variables for thc variation factors, but even though it's a little clouding in this text it indicates a direct correlation with humidity and and resin production. I had read in another paper, that i can't find, but it said how the leaflet will get bigger if exposed to more humidity for a greater surface area for breathing, but with lower humidity, the leaf is more slender and increased resin production takes place to protect from the plant drying out.
Pate, D.W., 1994. Chemical ecology of Cannabis. Journal of the International Hemp Association 2: 29, 32-37.
Bouquet (1950) has mentioned that the western side of Lebanon's mountainous Cannabis growing areas is less favorable for resin production because of humid sea winds. De Faubert Maunder (1976) also observed that the copious separable resin needed for hashish production occurs only "in a belt passing from Morocco eastwards, taking in the Mediterranean area, Arabia, the Indian sub-continent and ending in Indo-China." These are mostly areas notable for their sparse rainfall, low humidity and sunny climate. Is it merely coincidence that resin is produced according to this pattern, as well?
n a study of 10 Kansas locations, Latta and Eaton (1975) found wide differences in plant cannabinoid content, observing that "delta-9-THC ranged from 0.012 to 0.49% and generally increased as locations became less favorable for plant growth, suggesting increased plant stress enhanced delta-9-THC production." Mention was also made of a positive correlation between competing vegetation and THC content. Although the sampling area was not considered very moisture deficient, they speculated that "Greater difference among locations might have been observed under drought conditions."
