We have a raised bed all along our driveway -- a "gift" from the previous homeowner that's been largely a wasted space/weed incubator apart from spring daffodils and fall mums;-)-- that I want to turn into an herb garden. There's a hedge of althea directly behind the bed, blocking afternoon sun, but it gets both a healthy dose of morning/noontime sun and reflected heat from the driveway pavement. Moisture control is I think the big plant maintenance issue....keeping plants adequately hydrated.
I've already transplanted some perennial herbs from my previous residence into the south end of the bed (which is actually the more shady end of our front yard) and want to work my way north, toward a relatively dry and sunny north end. I am going to be amending the soil as I work my way down.
I have the best luck with store-bought herb plants, and I don't have a good place indoors to start seeds, but I'm wondering if there are any herbs that might take well if direct seeded into amended/prepared soil.