Oklahoma State University
Stillwater, OK

Oklahoma Alfalfa
Oklahoma Cooperative Extension Service
Oklahoma Agricultural Experiment Station

Windmillgrass

COMMON NAME: Windmillgrass
SCIENTIFIC NAME: Chloris verticillata Nutt.
TYPE: Simple Summer Perennial Weedy Grass
DESCRIPTION                                                                 
    Germination: May-July.
    Reproduction: By seed July-September.
    Stems: Erect to decumbent, forming clumps.
    Leaves: Sheaths flattened at base; blades 1/8 inch wide.
Flowers/
Inflorescence:
Spikes terminal, horizontally spreading 2 to 6 inches, 1 fertile floret/spikelet with whole inflorescence breaking from plant at maturity.
Fruit: Seed unit with lemma and palea attached, with awn several times longer than seed.

FOUND:

Throughout the state in thinning stands. Not considered a major competitor. Occupies the spaces between the alfalfa plants, and prevents establishment of weedy annuals.

CONTROL:

No good herbicide option for control.
In Alfalfa tn_windmillgr-490_jpg.jpg (1205 bytes)
Plant
Leaf Plant Seed Head
Additional Windmillgrass Images
Jim Stritzke
Former Alfalfa Weed Control Specialist
Department of Plant and Soil Sciences
Oklahoma State University

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