For a related thread... Here is a link that might be useful: Michael Pollan's Botany of Desire on PBS Oct 28 8 pm - Northwestern Gardening Forum - GardenWeb

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Botany of Desire is terrific! A show everyone should watch.

Thanks for posting that. I saw the show and really enjoyed it. It reminds me the best crop of potatoes I ever got was from ordinary garden soil, filling a trash can tower (holes cut out the sides) and containing three different types of seed potatoes. "all blues" that were usually 2" across were over twice the size and hefty, all the varieties yielded prolifically and to harvest I just pushed over the tower. I couldn't help thinking of peruvians with blocks of cultivars growing on hillsides, as this was the best interpretation I could do at the time, and it made me feel good. I'm not exactly ready to speak out but whenever possible I like to demonstrate that growing your own healthy, prolific, easy and organic food is sometimes easier than than any other option, including buying it.