A homeowner heads to the garden center to buy ornamental grass for the yard. They plant it, thinking it is a good way to green things up—only to find the new variety soon takes over the garden bed and spreads to other yards.
It’s a common problem with cogongrass—labeled one of “the world’s worst invasive weeds” by the United States Department of Agriculture (USDA) and banned by federal legislation. It’s also a growing issue, reports a new study by the University of Massachusetts Amherst.
Researchers discovered that cogongrass and nearly 1,300 other invasive plants are currently