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Annual bluegrass contains both annual and perennial species. Annual bluegrass forms dense patches that can withstand low mowing heights. Annual bluegrass has a boat-shaped tip, folded in the bud. The ligule is membranous and auricles are absent. Annual bluegrass has a small panicle seedhead. Germination occurs in late summer and early spring. |
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| Annual Bluegrass is found throughout the United States and Canada. |
| Integrated Pest Management Control Recommendations: |
Cultural Practices:
Annual bluegrass cannot be controlled culturally. Both annual and perennial
species of annual bluegrass exist, depending on where it's developing.
Most annual bluegrass on greens is of the perennial species, while the
annual species develops in fairways and lawn type settings. Both will
fade out with hot summer temperatures. The perennial species will develop
from the crowns of existing plants and seeds, while the annual species
develop from germinating seeds in the fall. Annual bluegrass can adapt
to all cutting heights. The seedhead will also develop under all cutting
heights. Annual bluegrass excels with high fertility and irrigation.
Herbicide Use:
Make a preemergent application in the fall and spring to prevent germination
of annual bluegrass.
University Links | Gordon's Recommendations | Germination Dates
