Watergrass

This small, green grass grows up to 1 foot (30.5 cm) tall. The very narrow and elongated stalks grow in thick clumps that are flexible and they are exceptionally hardy.

When mature, the end of the stem eventually transforms into a medium-sized, white spikelet.

During the mid-summer, it produces very little pollen; it does not cause any allergic reactions, and after flowering, it is left with lots of small grains.