You can grow quite a few herbs in a small outdoor space, too. Mine is right outside the back door and the herbs grown right over it out onto the cement patio when rain washes a little soil onto it. They will find any little crack in the patio and grow right through it, especially mint and chives. I have had them growing under the patio table, lol. I wonder if you could grow many of them even in the heat of summer if you put them in a spot with morning sun and afternoon shade and kept them watered. Purple basil is fun because it makes pretty herbed vinegar and adds a bit of color when chopped up.