when a plant gets seeded,the tend to finish earlier than normal,as i been told,but i am not sure.the plant that started in july should finish by end of september.....the seeded one you can harvest when the seeds start to fall out,and the bud if any will be smokeable,the one that is hermi i wouldnt grow them seeds that are on that plant as you will most likely end up with all hermies,but the hermie plant seeded another female you can grow those seeds and i think you will have 90% female plants from those seeds,but they will have a big chance of going hermie also,.just dont stress them out during flowering and you should be good....

good luck and if you can go to radio shack get a hand held scope there 15-20 bucks use that and check the trichomes,helps when harvesting..

but if i was you i would just harvest everthing end of september....