Posted: 28/11/2013 at 16:44
If you don't cut the flowerheads off they turn into a star-shaped husk full of seeds. I leave them until they have dried enough to turn dark, then scrape the seeds into an envelope. If I'm being anal, I mark each envelope (acid-free) individually but this year I just did one big mixed bag and planted randomly. The germination rate seems to be as good/bad as bought seeds. The fun bit is that even if you keep the seeds seperate they might not grow exactly the same as the parent plant but they are free and even if they are different, I've learned to embrace the difference!
Hi MACAVITYTHECAT, so you can scrap the seeds out once they have become star shaped