The whole window will have a one foot wide window sill. I will have to show you the place to get a good idea of things. Basil planted in teacups for the kitchen, cheap and pretty teacups planted with fresh herbs on the window sill.
Better Home Gardens: Grow your own lemongrass! Growing lemongrass is child’s play. All you need to do is plonk the stalks that you buy at the supermarket into a jar filled with about an inch or so of water and just watch it grow!