if you want to have a sensi crop. ABSOLUTELY. I've let a few go because it didn't make a big deal to me... then when I started to chop the hermie down at the end of flowering, i realized just how bad it was, just about every nug has a seed in it with the exception of the top cola. I think I'm going to finish flowering out what I got with the hermies and started from scratch so I can clean everything up.