Family: Poaceae
annual bluegrass, speargrass
[Poa annua var. aquatica L., more...]
Emmet J. Judziewicz
Kurt Stüber
University of Wisconsin - Madison (WIS-VP)
Etymology: Poa: ancient Greek name for "grass" or "fodder"
Plants: annual grass
Conservation Status: Introduced - naturalized
Plants: annual grass
Conservation Status: Introduced - naturalized
Lawns, gravel pits, gardens, campgrounds, gravel areas, roadsides, dumps and waste areas, sidewalk and pavement cracks, ditches, agricultural land, fields and pastures, rock outcrops and cliffs, around building foundations and weedy landscaping, farmyards; also in more natural settings such as lakeshores and beaches, sandbars, along streams, in dry-mesic to mesic forests and floodplain forests, usually in clearings or along trails.
This is a European species that has become one of the most widespread weeds on the planet. First collected in 1857 and no doubt present in every county in the state. This is one of our earliest-flowering grasses, sometimes blooming in December or February along the south sides of buildings if temperatures are warm enough. It can form large populations in lawns, which stand out because of their yellowish color.
This is a European species that has become one of the most widespread weeds on the planet. First collected in 1857 and no doubt present in every county in the state. This is one of our earliest-flowering grasses, sometimes blooming in December or February along the south sides of buildings if temperatures are warm enough. It can form large populations in lawns, which stand out because of their yellowish color.
Flora of North America: Flora of North America Floristic Rating: Wetland Indicator = FAC- USDA Plants Database: Federal Distribution and detailed information including photos Grasses of Iowa: Detailed photographs, descriptions, maps Canada Agriculture and Agri-Food
Alberta Government: "The identification of certain native and naturalized grasses by their vegetative characters", S.E. Clarke, J.A. Campbell and W. Shevkenek. 1950.
(Publication no. 762 ; Technical bulletin no. 50) Drawings, descriptions. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.
Alberta Government: "The identification of certain native and naturalized grasses by their vegetative characters", S.E. Clarke, J.A. Campbell and W. Shevkenek. 1950.
(Publication no. 762 ; Technical bulletin no. 50) Drawings, descriptions. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc.
Kurt Stüber
Botancial Illustration
