- tufted; upright growth (up to 1 foot tall); leaves emerge from protective sheath with pointed and papery ligule
- narrow leaves (1 – 4 inches long, 1/16 – 3/16 inch wide); short flower heads (1 – 4 inches high) bear 3 to 6 seeds per branching stalk; light green in color
- common in lawn areas and planting beds
- winter annual or short-lived perennial grass: seedlings germinate when soil temperatures are below 70°F in late summer, early fall or early spring
- plants flower within 8 weeks of germination and continue to flower and produce seeds until the onset of hot temperatures in summer months
- dormant plants produce new blade growth during cool fall temperatures
- Annual bluegrass is difficult to control in lawn areas since it commonly produces seed close to the soil surface (flower heads cannot be mowed off like many other turfgrass weeds).
- Maintain maximum turfgrass vigor through appropriate management practices; deep, infrequent irrigation will reduce seedling germination in lawn areas.
- Hand-pull plants in lawn areas prior to flowering.
- Apply appropriate pre-emergent herbicide prior to seed germination.