GET A SCOPE!!! (if you don't already have one). Don't worry about hair colors and such. You're growing a cross between 2 of the more impressive strains of cannabis. One of which has an absolute minimum of 12 weeks flowering (usually more). Why guess? What you see inside the trichs (through the scope) will let you know when you need to start flushing and when to chop. This baby WILL add some serious bud weight towards the end of the grow but you have to continue to give her nutes during this time. Depending on the high you want, maybe start to flush when you see 25% amber in those trichs. And probably only flush for a week. Let her keep adding bud weight as long as she is willing to (continuing to feed her late into flower will do this). And definately give us a smoke report for this cross. Good luck.
