I've been trying it both ways. In the Summer I trimmed the lower leaves a lot to try and keep humidity down. Since the weather cooled off I've been leaving every leaf on until it dries up, figuring more transpiration might help the humidifier keep up with the lower Winter RH. Either way I ended up with good hauls of primo bud. Clearing out the lower growth does save a lot of time trimming larf later on. I couldn't tell if it put more oomf into the colas. Then again, my jars are empty, so until this harvest cures, at least I've got larf to smoke, or vape. Bottom line is these plants are hard to kill.