Biocontrol Against a Thirsty Invasive Grass in Arid Regions of the U.S.

Arundo or giant reed is a large, fast-growing invasive grass that has invaded at least 100,000 acres of “riparian” habitat in the southwestern U.S, is widespread in the southeastern U.S., and is present as far north as Ohio and Washington State. Arundo in arid, drought-prone Texas and California consumes enough water every year to cover over 75,000 football fields to a depth of 1 foot. Arundo also blocks flood control channels, hinders recreational water use, fuels wildfires, and displaces native plants and animals. See how ARS researchers are using biocontrol (insects) to damage and reduce the presence of this invasive plant.