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Herbal Herbicides

Weed killers manufactured by Mother Nature

By
10:44am, March 13, 2007

Certain plants are picky about the company they keep. Once established, walnuts and some sandy shrubs, for instance, create a virtually barren border of ground around them. Many other plants aren't quite so antisocial. They permit numerous species into their neighborhoods, while barring a few plant types.

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