Poa annua
Annual Bluegrass, annual meadowgrass, spear grass, dwarf meadow grass, winter grass, six-weeks grass, causeway grass, walk-grass
Description: annual
Place of origin: Europe
Urban habitat: commonly found in compacted lawns, pathways, minimally maintained parks, vacant lots, rubble dumps, highway banks and medians, small pavement openings; can tolerate dry, compacted soils and roadway salt; can go dormant in very dry conditions and return in moister conditions.
Ecological function: disturbance-adapted colonizer of bare ground; food for wildlife.
History: Poa annua is one of the most common grasses found in the urban environment and is presently found throughout the world.