Can you give me advice on Harvest time for good seeds, I crossed 2 plants for the seeds, I dont want to harvets when the plants is ready to smoke if the seeds are not mature. Any advice for getting working seeds, I am in week 8 of flower with about 30% seeds on the buds,, pulled off a seed a few days ago and it was green and small. I screwed up the first time by harvesting to early.. is there anything special I am looking for or need to do to make sure the seeds are good?