Dabkinganswered grow question a year ago Hey brother, if you ask 10 growers this question you will get 10 different answers. This is a very debatable question, of which I only recommend experimenting and trying for yourself. Personally, I have already done so and found that certain autoflower strains definitely benefit from topping. Some strains that are low and compact to begin with I wouldn't top, however strains that stretch and get tall like wedding cake, girl scout cookies, purple juice, ect, then I would most definetly not only top, but do some LST as well.