This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from the USDA's rich science and research portfolio.
-- Marcia Wood, Agricultural Research Service Information Staff
Along streams and irrigation canals in 16 states, a wily weed called giant reed, or Arundo donax, can grow a remarkable three to six inches a day. This intruder develops dense stands that can crowd out native plants like cottonwoods and willows, and can block water flow to farms and cities.
