We do a few tomatoes and peppers in their own space. Herbs and leaf lettuce go in pots near the grill and patio which is surrounded by a big daylily bed. An occasional volunteer cherry or grape tomatoe will turn up in the daylily beds but thats it for mixing. Unless of course you count my mom planting spinach and Radishes in a corner of my raised seedling bed
I was not pleased about that.
Here is a pic of the grill in the bed from last summer
Click to embiggen as Mary says