I’ve let a few Radishes go to seed this year. The flower stems are very tall with pretty little white flowers at the top. The flowers disappear quite quickly to be replaced by a small pod which gets larger over time. The slugs seem to like eating the pods so I have tied them up like a bunch of flowers to lift them off the ground. This seems to have worked. I’ve had great success this year with Peas that I saved from last year and also Runner Beans. Both germinated fine and we have eaten lots of sweet and juicy peas for free!