Master Kush 17-days into flower

So, am I not supposed to be seeing some blooms? Pre-flowering is there and showed after 7-days.

Plant in the middle is the Master Kush. The others are white rhino and super skunk, which are a week behind the M. kush, so I am not too concerned there.

So, is it normal for a plant to take nearly 3 weeks to bloom under 12/12?

looks a little slow, but not too bad at all. make sure you are feeding them flowering nutes.

I started with 15-30-15 once a week with E.C at 1.5. I am now using 1-3-5 with EC at 2.0