Oklahoma State University Stillwater, OK | |
Oklahoma Alfalfa |
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Annual Bluegrass |
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COMMON NAME: | Annual Bluegrass |
SCIENTIFIC NAME: | Poa annua L. |
TYPE: | Winter Annual Cool-season Weedy Grass |
DESCRIPTION | |
Germination: | From late summer through fall. |
Reproduction: | Seeds maturing in May-June. |
Stems: | Mostly erect, some bending and rooting at lower nodes. |
Leaves: | Narrow, no hairs, boat shaped tip. |
Flowers/ Inflorescence: |
Spikelets in pyramidal panicle, lemma hairy on nerves. |
Fruit: | Seed falling intact with lemma and palea, no awn. |
FOUND: |
Statewide, primarily in thinning stands, along brushy areas. |
CONTROL: |
Not competitive, so usually dont worry about control. Plants will be controlled in established stands with January-February applications of SINBAR or VELPAR. |
In Alfalfa | Plant |
Leaf | Plant | Seed Head |
Additional Annual Bluegrass Images |
Jim Stritzke Former Alfalfa Weed Control Specialist Department of Plant and Soil Sciences Oklahoma State University |