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Achnatherum Richardsonii is a species of grass

Images of Achnatherum Richardsonii at

Achnatherum Richardsonii is a species of grass.

Overview of Achnatherum Richardsonii

• It is known by the common names:
– Richardson’s needlegrass
– Spreading needlegrass
– Canada mountain-ricegrass
• It is native to northwestern United States:
– Alaska
– Yukon
– Western Canadian provinces south
– Colorado
• This is a tufted perennial grass.
• It is about a meter tall.
• The inflorescence is open with spreading branches.
• The spikelet incorporates a twisted awn.
• This awn is up to 2.5 centimeters in length.
• This grass grows in several habitat types.
It includes:
– Grasslands
– Meadows
– Pine forests
It might be entirely on:
– Moraines
– Plains
– Mountain slopes
• This can be dominant or co dominant grass species in most areas.
Plants linked to it include:
– Canada bluegrass
– Prairie June grass
– Rough fescue
– Idaho fescue
– Agropyron subsecundum
– Western needle grass
– Timber danthonia
– Tufted Eleocharis acicularis
– Sedges
– Shrubby cinquefoil
– Bearberry
– Timothy
– Common yarrow
– Prairie smoke avens
– Northern bedstraw
– Hood’s phlox
– Bluebell
• This grass is a common meal source for livestock and wildlife.
• Elk and bighorn around the Great Plains feed on this grass.
• It is more preferable when young because when it matures, the fruits become hard and sharp.
• Richardson needle grass is often a native perennial.
• The inflorescence is open and diffuse.
• Culms are glabrous or slightly hairy.
• Blades are typically involute and subfiliform.
• They reach heights of approximately 5 to 10 inches.

Scientific Classification for Achnatherum Richardsonii

• Kingdom: Plantae
• (unranked): Angiosperms
• (unranked): Monocots
• (unranked): Commelinids
• Order: Poales
• Family: Poaceae
• Genus: Achnatherum
• Species: A. nelsonii
• Binomial name: Achnatherum Richardsonii

Growing/Caring conditions

• It truly is hardy to zone 8.
• It is in flower from May to July.
• The flowers are hermaphrodite (have both male and female organs) and therefore are pollinated by Wind.
• It could fix Nitrogen.

Cultivation Details
• It succeeds in moderately fertile soil with moisture.
• The plant succeeds in full sun.
• The species tolerate temperatures to about -5°c.
• It is only suitable for the milder elements of the United States.
• These plants roots in many cases are surrounded by a rhizo sheath that harbors nitrogen-fixing organisms.
• These organisms probably contribute to the species’ success like a colonizer.
• This plant is suitable for light, medium and heavy soils.
• It prefers well-drained soil.
• The suitable pH for this plant is acid, neutral and basic soils.
• It wouldn’t grow inside shade.
• It prefers moist soil.
• The plant can tolerate strong winds but is not maritime exposure.

• Get results from sowing the seed in a greenhouse.
• Cover the seed.
• It should germinate freely within two weeks.
• Prick your seedlings into individual pots.
• Do so if they’re adequate to manage and plant them in early summer.
• Division should be done in spring.
• Larger divisions might be planted out direct in their permanent positions.
• It’s preferable to pot the smaller divisions.
• Grow them by avoiding shade in a very cold frame.
• Do so before planting them out in late spring or early summer.

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