Scribsanswered grow question 5 years ago Usually I cut them off if it's during the vegetative phase if they're nearly dried-out / dead and just hanging there.
Note: The Rev's methodology recommends to not prune them during the flowering stage as often, the plant drains a few old leaves out of nutrients to feed herself as needed. Keep an eye on this when that happens, don't overreact if the rest of the plant is looking fine and see if it spreads before doing anything.