Answer: I've never heard of anyone doing this kind of experiment--so I'm sorry I can't give you any sources of statistics. I spoke with the folks in our Education Department, and they would love to hear about the results of your tests. They publish a newletter called "Growing Ideas" that features information on school gardening programs and interesting classroom experiments. You can e-mail the editor of the newsletter at email@example.com -- maybe your experiment will get a write-up in "Growing Ideas"!
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