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Kentucky bluegrass

Poa pratensis L.

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Kentucky bluegrass
Kentucky bluegrass
Kentucky bluegrass blade and boat-shaped tip
Kentucky bluegrass inflorescence

Morphology

Culm
Erect, slender, slightly flattened, glabrous.
Blades
Flat or folded, narrow, 2 to 10 inches long, to 1/4 inch wide, mostly glabrous; tips boat-shaped.
Sheath
Conspicuously veined, glabrous or rough, lower 1/2 united.
Ligule
Membranous, entire.
Inflorescence
Panicles, 1.5 to 5 inches long, 1 to 3 inches wide, pyramid-shaped; branches long, wavy, ascending or spreading, lowermost branches in whorls of 3-5
Spikelets
Crowded at ends of branches, 3-6-flowered, to 1/4 inch long, nearly as wide, flattened; glumes nearly equal; lemmas with tuft of silky hairs at bases; awns absent.

Ecology

Habitat
Meadows, fields, open woods, overgrazed pastures, and disturbed sites.
Distribution
Throughout Kansas.

Practical Information

Forage Value
Kentucky bluegrass provides good early-season livestock forage and withstands heavy grazing, but it is not drought-tolerant. Many wildlife species eat the seeds.

Additional Notes

Comments

Strongly rhizomatous, mat-forming. Kentucky bluegrass often is used as a lawn grass. Its pollen causes late spring allergy symptoms.

Quick Facts
Plant Type
Grass
Family
Poaceae - Grass Family
Life Span
Perennial
Height
4-40 inches
Last Updated
2007-09-09
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: May, June, July