For most apartment and city dwellers, having any sort of garden space is hard to come by. While some lucky few may have a patio or balcony, most are left with flower boxes, windowsills and maybe a small space outside the front door (or a fire escape). With little work and very little money, you can grow a garden even in the tiniest of spaces. If a windowsill or small balcony is the only space you have, look to these genius space-savvy gardens for inspiration.