Environmental Tips VPD and Humidity Control in Cannabis Cultivation
Why I Treat VPD and Humidity Control as One System
I used to manage my room by chasing a single number on a hygrometer. If relative humidity looked “right,” I assumed the plants would follow. In reality, my cannabis, marijuana, and weed crops kept giving me mixed signals: fast drybacks one week, slow uptake the next, and occasional leaf-edge burn that I blamed on nutrients.
The fix was not a new bottle or a new light. It was learning VPD and Humidity …



