I'm posting a couple older photos showing the start of new growth in my crown area. I occasionally get the question regarding the first sign of new growth.  Of course it's different for every individual but for most it starts about months 3-4. 

This picture was taken 11 weeks and three days after surgery and you can clearly see the tiny new hairs popping through my scalp.  You can also see a pimple in the second picture which is very common after a transplant.  This occurs when new hairs encounter an issue breaking through the surface.  Nature typically wins and the hair eventually surfaces.