Olivestem Grass

This huge, ashy red grass grows up to 37 feet (11.3 meters) tall. The wispy stalks grow in thick clumps that are rigid.

When mature, the end of the stem eventually transforms into a small, olive spikelet.

During the late autumn, it produces excessive amounts of pollen, but it does not cause any allergic reactions, and after flowering, it is left with plenty of medium-sized grains.