Common reed is a tall grass weed growing widely across the United States and Canada. Its habitats include shorelines, riverbanks, and meadows. It is difficult to eliminate once rooted, and so not suitable for planting in small areas. It appears on state invasive species lists or laws in much of the eastern United States and Alaska, and state law in several western states from Colorado and Utah to Idaho and Washington. The grass displaces native species, blocks sunlight to the surrounding community, and increases fire potential. For control, cut stems below the lowest leaf. For large patches, cutting the perimeter prevents expansion.