I am on a garden-book-reading spree it seems. I just finished The Beautiful Edible Garden (got it as an ebook from Pioneer Library Systems, our local public library). It had a lot of suggestions on how to arrange edible plants into an existing decorative garden. Mostly not relevant to how we have the yard laid out, but probably helpful for others. They did recommend a three-group crop rotation of brassicas, legumes, and nightshades, and ignoring herbs, lettuce, and alliums. So that was similar to The Vegetable Gardener’s Bible which I read a few weeks ago and liked.