Crimsongrass

This average-sized, red grass grows up to 2 feet (61.0 cm) tall. The needle-like stalks grow in extensive patches that are strong and tough and they spread and grow quickly.

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

During the late autumn, it produces an average amount of pollen; it can cause severe allergic reactions, and after flowering, it is left with a few medium-sized grains.