This clump-forming annual grass grows up to about 30 centimetres high. The short leaves are light green and blunt at the tips. The flowers grow in conical branched clusters. The plant is hermaphrodite (the flowers have both male and female reproductive parts) and is pollinated by the wind or self-pollinated without the flowers ever opening. Annual meadow grass has a fairly weak and shallow root system.
Meadow grass grows well in moist areas in full sun, although it can also do well in semi-shaded conditions. In coastal regions or areas with moderate temperatures where turf is frequently irrigated, annual meadow grass stays in flower all year round, but dies in hot, dry conditions. It is found on arable land, grasslands, paths and expanses of lawn.