Usually the males take about 5-6 weeks to fully flower and drop their pollen. By that time the females will be finishing up veg and about to go into full flower. That's usually when I pollinate them. When harvest time comes I usually cut the mature buds off the plants but leave the seeded branches for another 2 weeks or so until those branches have pretty much started to die off and the seed pods are splitting open. Nice big, mature seeds then.