Coppergrass

This colossal, copper or purple grass grows up to 30 feet (9.1 meters) tall. The very narrow and elongated stalks grow in small clumps that are prone to bending and snapping under stress.

When mature, the end of the stem eventually transforms into a large, bold red 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 a few tiny grains.