Love those colors Mary. What I do when I collect the seeds is wait until the seed heads are dried on the plant. With a pair of scissors cut the stem a bit below the head and then hold the head over a plastic baggie and squeeze the head back and forth between my fingers which will force the seeds out into the baggie. I then make sure to mark the plant, year and in this case color on the baggie. The ones I have in my photo were started in Dec of last year.