i dont know is that very wise.. i never heard from this kind of thing and powe plant is well known plant from its fast flowering.. so i dont see anykind of reason to do that..
and that can confuse the plant and may change its gender as hermafrodites..
but when you start packin it.. im really...
for me.. these looks like too much nutrients or too wet soil.. never water your plants untill the soil is dry.. my own powerplants are already over 110cm tall