Coppergrass

This giant, lime green grass grows up to 34 feet (10.4 meters) tall. The finger-like stalks grow in small clumps that are strong and they overwhelm an area rapidly.

When mature, the end of the stem eventually transforms into a medium-sized, copper tail.

During the late autumn, it produces excessive amounts of pollen, and after flowering, it is left with a modest amount of medium-sized grains.