Or just grass..easy to mow that. The little mossy things I've seen may not take the sun you're gonna have on that side.
Do you only have the one outside water faucet? You're gonna need more hose to get water back there, aren't you... for the garden anyhow.
I'm just afraid it'll be too narrow to get the mower through. Not sure how it'd take a weed whacker. Might work OK. I was kinda thinking thyme, though - that doesn't mind sun or dryness, and it spreads nicely and smells good. I can wander around back there contemplating pizza. ;-)
I haven't seen another faucet. The hose as is reaches as far as the compost pile, which *might* be long enough to get the garden good, but it's probably be easier with another length. Guess I can add that to my Home Depot list.
Is Home Depot likely to be the cheapest place for garden tools, too?