Short of outdoor space but want to grow fruit and vegetables? Congratulations. Really, lucky you. Not for you the back-breaking trudge of tending large spaces of land, the weeding, digging and pest vigilance. Gluts? They will mean nothing to you. Instead you can look forward to small but perfectly formed bursts of flavor. Handfuls of fresh leaves, berries and tomatoes, just when you want them, and at arm's reach. As more of us live in cities with...