Coppergrass

This huge, copper grass grows up to 37 feet (11.3 meters) tall. The needle-like stalks grow in small clumps that are rigid.

When mature, the end of the stem eventually transforms into a giant, beige tuft.

During the late summer, it produces lots of pollen,but it does not cause many allergic reactions, and after flowering, it is left with excessive amounts of small grains.