100th post!...and i forgot to say that roots never completely stop growing, that would be silly of them lol but the plant puts a lot of effort into a great root base during veg and the first part of flower so it can provide lots of water and food to its produce. Then it def starts focusing on the produce, especially when you're finishing the plant it's getting flushed starting to discolor; that maybe the time when roots are goin alright time to give up everything to the fruits and stop growth.