when/how to save seed of Swiss chard (Bright Lights)
Rainbow-coloured chard planted last year did really well all winter and we were still picking it in early June. I'd like to grow more but don't have any new seed left from that packet, so when I composted most of the row I left some of the plants to flower and set seed but would welcome advice on
1. when to pull these out
2. whether I then need to hang the stems somewhere under cover until they have dried?
3. when should I re-sow them?
At the moment the seeds are still green and slightly smaller than a pea.