your female(s) should be done in about 7-10 weeks. wait for about 50-75% of the hairs turn red/brown and for the pods to swell up. you can also buy a 10-30x magnifing glass. use it to look directly at the trichombs. they will look like a small mushroom at their peak. you want to idealy pick your crop when most of the trichombs (that are usualy clear) become milky/amber. use the same ratio as the hairs on the trichombs for picking time.