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Poa Cookii is a species of tussock grass




Images of Poa Cookii at google.com

Poa Cookii is a species of tussock grass. It has common names:
– Cook’s tussock-grass
– Bluegrass

Overview of Poa Cookii

• It is a native to different subantarctic islands.
• This name is given in the honors British explorer named James Cook.
• In 1776, he is known to have visited the Kerguelen Islands.
• Poa cookii is a deep green perennial.
• It is a gynomonoecious grass.
• It grows into clumped tussocks.
• They are dense.
• They grow up to a height of 800 mm.
• It has fibres from older leaf-sheaths.
• It forms a tangled mass.
• This mass is located at the base of the plant.
• It is difficult to collect seed as they are sprayed easily.
• This grass flowers from November to February.

The grass is found on the:
• Prince Edward
• Crozet
• Heard
• Kerguelen Islands of the southern Indian Ocean
• Australia’s Macquarie Island

It grows in:
• moist and sandy areas
• along the shore
• on peat flats
• rocky areas
• along the coast up to 200 m above sea level
• on flats and slopes
• wet peat
• along the edges of creeks

Lepidoptera whose caterpillars use Poa as its food include:
• Agriphila inquinatella
• Cercyonis pegala
• Poanes hobomok
• Poanes zabulon

Scientific Classification of Poa Cookii

• Kingdom : Plantae
• (unranked) : Angiosperms
• (unranked) : Monocots
• (unranked) : Commelinids
• Order : Poales
• Family : Poaceae
• Genus : Poa
• Species : P. cookii
• Binomial name : Poa cookii

Growing/Caring conditions

• 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.





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