Weeks 4-6 is the normal time for pistils to start to change color. Weeks 5-6 is when you'll see the flowers really start to bulk up. Weeks 1-4 in Flower is the stretch phase. What ya feeding them? Do they look hungry? Any pics? @cansa0722

Thanks a lot for the information. They were so weird, some plants develop leaves. The bud is really small. I am feeding them with Cali Pro Bloom A, B, Big Bud, Bud-Xl and some others. Not sure why they are not stretching and bulk up.