Since I have no space (have I complained about that, yet?), I have been researching companion planting ideas to make my front yard feed my hungry belly more efficiently. Wikipedia has this companion planting chart that I think is fairly helpful. I compared it to to a few others, and it is consistent and broader than most.
This article from the National Sustainable Agricultural Information Service describes companion planting in general, and then does a thorough report on the the Native American companion planting techniques of the three sisters: corn, beans/peas, and squash (and sunflowers, in many instances). I have a slightly crippling obsession with popcorn and edamame, so I’ve decided to plant a few of those…so it’s good to know how to arrange them with some squash plants so they all benefit and I can subsequently gorge myself.
I apologize if the above links don’t work. It appears that since republicans prefer we eat cardboard (manufactured by a corporation of maximum size)…and dems have yet to acquire the requisite cojones…funding for this organization has been eliminated as of March 15th. It is a really great resource for gardening, so I hope it doesn’t disappear for good.