A graminoid (commonly called grass or reed when growing in wetlands) is any herbaceous plant that grow as elongated, blade-like leaves. All other herbaceous plants are called forbs.
Some species, such as Poa pratensis, are often grown as a monoculture and continuously mowed to create lawns. These species are sometimes called turfgrass.
Septic system installers often promote growing turfgrass over drain fields to prevent plants with deep roots from growing.
Turfgrass can also be used to create a turf block as a pervious alternative to concrete or asphalt driveways.