i got weed straight from the plant about 2 weeks ago and ive just planted the seeds 5days ago and there growing now the seeds where still white/green in color
they do not turn from green to brown. and i ment crack as in pop, germ, sprout, not crack as in crush the seed. however, yes, if you can crush your seed its no good.
best thing u can do is when u take them from the plant is to store them for 2-4weeks.but i can grow them straight from the plant, i did but only %50 og mine germed.