Poa Arida is also known by the common names Plains bluegrass and Prairie speargrass. It is a species of grass.
Overview of Poa Arida
• It is native to North America.
• It occurs throughout western and central Canada.
• It is also native to central United States.
• It is most common to the east of the Continental Divide.
• This is a perennial grass.
• It can grow up to a height of 80 cms.
• The inflorescence is usually compact.
• It has spikelets.
• Each spikelet bears 3 to 7 flowers.
• Sometimes this grass has rhizomes.
• It grows in tufts or clumps.
It reproduces by:
• The grass grows in many types of habitats like:
– the Rocky Mountains
– the Colorado Plateau
– the Great Plains
– other adjacent regions
• It can be found in:
• It can be found in:
– alpine climates
– saltgrass plant communities
• It has panicle that is compact to infrequently open.
• The rhizomes are found abundant in this grass in Wyoming.
• This grass species establishes from seed.
• It grows through sprouting from rhizomes.
Lepidoptera whose caterpillars use Poa as its food include:
– Agriphila inquinatella
– Cercyonis pegala
– Poanes hobomok
– Poanes zabulon
Scientific Classification of Poa Arida
• Kingdom : Plantae
• (unranked) : Angiosperms
• (unranked) : Monocots
• (unranked) : Commelinids
• Order : Poales
• Family : Poaceae
• Genus : Poa
• Species : P. arida
• Binomial name : Poa arida
• This is an incredibly easily grown plant.
• It succeeds in well-drained soils.
• It prefers moderately fertile soil.
• It grows well in a sunny position.
• It can tolerate very acid soils.
• This plant is a very common garden weed.
• It usually does not require cultivation.
• This is an essential food plant for the caterpillars of numerous species of butterfly.
• It is seen growing in close cut lawns.
• The seed drops very readily in the plant and hence is difficult to harvest.
• But this way the seed is spread effortlessly.
• It makes the flower even more difficult to eradicate.
• A lot of the species are very important pasture plants.
• They are used extensively by grazing livestock.
• Many of the Poa species are popular for gardens as well as for landscaping in New Zealand.