I don’t know about radishes, but I get seeds from my carrot flowers every year. I just leave one un-harvested, it flowers like crazy and as the flowers wilt & dry I put em in a bag to plant them again. You can shake the seeds out of the flowers, but they’re very tiny, so I just plant the dried flowers.
I took it from the USDA site as I haven’t harvested carrot seeds yet. Do you have any tips? It freezes a lot up here at night, so I anticipate having to cover the carrots I leave for the winter at night.
I live in the hottest zone of Arizona. Last year after I harvested the carrots, I transplanted a couple of smaller ones into a separate area. It doesn’t get very cold here at night. But 1 of the few that I did that with is now a 2 1/2′ bush covered with flowers! I’ve been organic all along so I have a myriad of good buggies in my garden. I just wait until the flowers are wilted – they have like a lil tan crust (which is the seeds) I save the whole flower rather than trying to knock out & separate the seeds. I plant the dried flowers. Its been working.
I’d love to upload a picture of the one seed producer. I’m new to this site, so unfamiliar with it.