I'm afraid I may confuse things more here, but if I'm getting 2 crops out of a bed within the same year, then the 2nd crop is usually from the SAME family For instance, my onion bed remains an onion bed from Spring through to Spring - Spring sown onions are followed by over-wintering leeks! Then Peas & Beans with broad beans going in in the autumn, then brassicas, then miscellaneous, then potatoes. Empty beds are covered with manure, or compost, and covered with weed-suppressant.
Admittedly, this is only my second year, but our Allotment Secretary wins prizes in all the big shows, and reckons this is an ok way to do it.

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Sarah

“Tell me one last thing,” said Harry. “Is this real? Or has this been happening inside my head?”
“Of course it is happening inside your head, Harry, but why on earth should that mean that it is not real?”