Eric over in France sent a couple of links including this one from Inka Biospheric Systems. Who seem to have some neat wall garden stuff...
Another reader, Neil, sent a couple of great links from Container Gardening which looks like an awesome source for someone doing a serious garden in a very limited place...
There was also a link to a book "Fresh Food from Small Spaces: The Square-Inch Gardener's Guide to Year-Round Growing, Fermenting, and Sprouting" which had me at the "Square inch" in the title...
