Poa annua (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.
SITES:
![](http://www.umbc.edu/cazabon/DC/thumbs/uncult12.10.14_8186.jpg)
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.
SITES:
![](http://www.umbc.edu/cazabon/mobile/thumbs/uncult11.05.22_8922.jpg)
![](http://www.umbc.edu/cazabon/mobile/thumbs/uncult11.05.22_8876.jpg)
![](http://www.umbc.edu/cazabon/mobile/thumbs/uncult11.05.22_8931.jpg)
![](http://www.umbc.edu/cazabon/mobile/thumbs/uncult11.04.29_8249.jpg)
![](http://www.umbc.edu/cazabon/mobile/thumbs/uncult11.04.29_8429.jpg)
![](http://www.umbc.edu/cazabon/brooklyn/thumbs/uncult12.03.17_4764.jpg)
![](http://www.umbc.edu/cazabon/brooklyn/thumbs/uncult12.03.17_4507.jpg)
![](http://www.umbc.edu/cazabon/brooklyn/thumbs/uncult12.03.17_4934.jpg)
![](http://www.umbc.edu/cazabon/brooklyn/thumbs/uncult12.03.17_4631.jpg)
![](http://www.umbc.edu/cazabon/brooklyn/thumbs/uncult12.03.17_4661.jpg)
![](http://www.umbc.edu/cazabon/DC/thumbs/uncult12.10.14_8247.jpg)
![](http://www.umbc.edu/cazabon/DC/thumbs/uncult12.10.14_8186.jpg)