Biological Control of Pests in Forests of Eastern United States



The gypsy moth

Figure 1. Alligatorweed mats grow from shore and often cover entire waterways, thereby disrupting water flow and causing flooding. (Photograph courtesy USDA, ARS by G. R. Buckingham.)

Featured Weed
Alligatorweed (Alternanthera philoxeroides [Mart.] Griseb.) is a South American immigrant that has invaded waterways in the United States, primarily in the southeastern states. It also is a weed in tropical and mild temperate regions around the world.
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