The 100 Square Foot Garden Challenge

Rosalind Creasy of Mother Earth News has proposed a 100 Square Foot Garden Challenge. The challenge is produce as much edible food from a garden space of 100 square feet.  Ideally according to Creasy the bed should be a 4' x 25' Jeavons style garden bed with the long end facing north to make crop rotation easier and eliminate shading problems.  Basically a Jeavons garden bed is raised and no till