I let my spinach seeds bolt so that I could get some seeds to replace the ones that I used this season. I have done some online research saying I need to cut the stems, hang them to dry, and then use a strainer to collect the seeds.
That's all well and good, but how do I know when the seeds are mature enough on the plant to cut the stalk in the first place? Right now most of mine have formed light green, flattened-ball shape seeds. I can try to take a picture tomorrow, but how do I know when they are ready or if they need more time on the stalk?
Also, if a stalk has turned a pale yellow-ish color, should I just pull it, or will it still set seed?