Posted: 02/08/2014 at 05:55
On any one flower spike there will be seed capsules which are immature at the top, others that have already escaped at the bottom, and ready-to-collect ones in between. Collect some capsules from the middle, place in a paper bag, shake and hey presto you have ten million seeds. They are minute so only need sprinkling where you want them to germinate, including your seed tray. No need to cover.