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Barnyardgrass is a summer annual which has tillers which lie flat and form secondary roots resulting in a mat formation. The leaves of barnyardgrass are rolled in the bud and contain neither a ligule nor auricles; the sheath is open but compressed. The mid-vein is thick and keeled; roots are fibrous. Barnyardgrass spreads by seed which germinate in late spring and early summer. The seedhead is a coarsely branched green to purplish panicle with spiked awns. |
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Barnyardgrass is found throughout North America and Mexico.
| Integrated Pest Management Control Recommendations: |
Cultural Practices:
Barnyardgrass is found in moist soils; especially soils high in nutrients.
Mow low to prevent the development of the seedhead. Physical removal can
be done both in turf and landscape plantings.
Herbicide Use:
Make a pre-emergent herbicide application prior to the seed germination.
For post-emergent control use a product containing MSMA.
University Links | Gordon's Recommendations | Germination Dates
