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Plant - summer
Yavapai County Native & Naturalized Plants

Poa pratensis - Kentucky bluegrass

Plant Form:Grass

Family: Poaceae

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Sedona area Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Plant image

Sedona area Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
  Grass Description -   Glossary of Grass Terminology

Origin: Introduced    Season: Cool and Warm
Habitat Description: Found in moist to dry meadows, open woods, roadsides, and waste places. Naturalized at middle and high elevations in the Southwest.
Plant Communities: Montane Conifer Forest, Riparian, Disturbed Areas
Elevation: 3500 - 11000 feet

General Description

Desc: A low growing sod-grass that spreads from rhizomes. Seedheads pyramidal, erect having numerous slender branches, lowest branches usually five in a whorl. Spikelets multi-flowered.
Identification notes: Loosely tufted rhizomatous perennial, slender, wiry stems branch at base. Blades folded or flat, canoe-tipped, two obvious veins either side of mid-vein. Seedhead pyramidal; spikelets laterally compressed with 2 to 5 florets. Lemmas hairy-webbed at base.
Grass Type: Perennial mat or sod-forming  Rhizomes: Y  Stolons: N
Large Dense Clump (> 2 feet): N  Bushy (highly branched): N
Height with Seedheads: 24 to 36 inches
Seedhead Structure: Branched - open and spreading  Seedhead Droops: N
Flowering Period: Apr - Oct

Flower Characteristics

Number of Flowers per Spikelet: Multi-flowered  Spikelets One-sided: N
Awns: Absent   Three Awns: N  Awns Bent: N

Flower and Seedhead Notes: Pyramid-shaped, 1 to 4 inches long, open. Lowermost branches slender, spreading, usually five in a whorl. Individual florets with copious cobweb-like hairs at base, are somewhat contracted after flowering and purplish.

Vegetative Characteristics

Blade Hairy: N  Blade with White Margin: N  Blade Cross Section: Flat or folded  
Blade Notes: Blades 3/8 to 4 inches long and thin, flat, folded, or rolled involute. Lower surfaces are hairless, top surfaces are smooth or sparsely hairy with two impressed parallel veins.
Sheath Hairy: Y  Tuft of Hairs Top of Sheath or Collar: N  Ligules: Membranous and hairy
Auricles (Ear-like lobes at base of blades): N
Vegetative Notes: Sheaths closed for 1/4 to 1/2 their length, smooth without hairs or infrequently sparsely to moderately hairy. Ligules smooth or with roughened projections, square or rounded.

Forage Value: Good early spring forage for livestock and elk, mule deer, and bighorn sheep in early spring and winter when few other plants are growing. Cottontail rabbit and wild turkey consume the leaves and seeds of Kentucky bluegrass.

  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
Last Updated: Nov 21, 2021
Content Questions/Comments: Email Mary Barnes  
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