Coppergrass

This small, lime green grass grows up to 1 foot (30.5 cm) tall. The long, narrow stalks grow in large clumps that are rigid and they are exceptionally hardy.

When mature, the end of the stem eventually transforms into a medium-sized, copper puff.

During the mid-summer, it produces very little pollen, but can cause severe allergic reactions, and after flowering, it is left with a handful of giant grains.