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Oklahoma State University Stillwater, OK |
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Oklahoma Alfalfa |
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Oklahoma State University Stillwater, OK |
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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. |
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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 don’t 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 |
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| Jim Stritzke Former Alfalfa Weed Control Specialist Department of Plant and Soil Sciences Oklahoma State University |
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