Bluegrass

This enormous, blue grass grows up to 21 feet (6.4 meters) tall. The very thin stalks grow in small clumps that are resilient and they are slow to spread and grow.

When mature, the end of the stem eventually transforms into a small, violet flower.

During the mid-summer, it produces excessive amounts of pollen; it does not cause any allergic reactions, and after flowering, it is left with plenty of tiny grains.