University Links Control Options Germination Dates 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. Annual Bluegrass is found throughout the United States and Canada. 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.