I would like to save some agastache seeds to try again next year, since the plant I had this year died. (I will be locating it in a drier location.) I got some seedheads from a friend. The stem and flowers were completely brown. When I took the seedheads home I tried tapping them over a bowl and nothing came out. I am a little confused. Are the dried flowers themselves the seeds? Or do they contain a seed inside? Have the seeds already dispersed? I read the description in the FAQ but it didn't clear things up for me. I would be very appreciative if someone could explain this.