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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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Cutleaf Eveningprimrose |
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| COMMON NAME: | Cutleaf Eveningprimrose |
| SCIENTIFIC NAME: | Oenothera laciniata Hill |
| TYPE: | Biennial Cool-season Broadleaf |
| DESCRIPTION | |
| Germination: | September-November. |
| Reproduction: | Blooming May-July. |
| Stems: | Hairy, branching at base, reclining. |
| Leaves: |
Long, narrow, coarsely lobed, arranged alternately on stem. |
| Flower/ Inflorescence: |
Flowers in leaf axils, 5-yellow petals, on long stem with seed forming below the petals. |
| Fruit: |
Long stem-like, four-ribbed capsule with many small seeds. |
FOUND: |
Commonly found in new fall-planted stands in central and eastern counties. |
CONTROL: |
Small plants control in fall planted alfalfa with BUTYRAC 200 applied in fall or spring. January-February applied SINBAR and VELPAR for control in thinning stands. |
| Jim Stritzke Former Alfalfa Weed Control Specialist Department of Plant and Soil Sciences Oklahoma State University |
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