dude, when they finally do take off your gonna be totally floored, giddy, amazed, etc. mine usually take off some were between weeks 3 and 4 and slow down about week 7/8. keep an eye on them from here out at LEAST daily. I grow vast and fast and was getting 3 zips under t5, and im about to do my first harvest under 1000k in a few weeks and its looking very promising.