KUSHINDICASEEDS

Humidity targets shift through the life cycle, and dense-flowering varieties are less forgiving of mistakes late on. Seedlings from cannabis indica seeds do well at around 65 percent relative humidity, vegetative plants at 50 to 60, and flowering plants at 40 to 50, with the final two weeks ideally kept near 40 to protect the tightly packed buds. A cheap hygrometer at canopy height gives the relevant reading. Vapour pressure deficit charts refine this further for those who want precision.