I’ve heard that you should not pull dead leaves off a plant because the nutrients need to be absorbed back into the plant. I wasn’t sure if that was true or not, so I did some research into whether or not you should pull dead leaves off a plant… Here’s what I found:
If the plant has had a disease or infestation then it’s best to cut the dead leaves off to reduce the chance of infecting the rest of the plant.
Dying leaves take nutrients from the plan as they try to stay alive. It is best to pull dead or dying leaves off a plant so that healthy leaves get more nutrients and the overall health of the plant is increased.