October 17, 2008
Planting the Food Chain Firmly in the Garden
One day in 2001, the entomologist Douglas W. Tallamy was strolling around the 10-acre property he and his wife, Cindy, had bought recently in Pennsylvania when he saw something weird. A black-cherry tree, a native species, was serving as a feast for insects, but hardly any were chewing on the leaves of nearby exotic plants, the Japanese honeysuckle and Oriental bittersweet. The realization struck him: Alien plants cannot sustain healthy populations of herbivorous bugs, one of the most
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