Annual Bluegrass (Poa annua) is a light green, cool-season grass that can be found throughout the United States. It is sometimes grown as a turfgrass, but is more often seen as a weed in lawns and landscape beds, where it can form a dense mat.
Unmoved, Annual Bluegrass can grow in 6- to 8-inch-high bunches or "clumps," and produces abundant seeds. The seeds are easily spread by foot traffic, lawn mowers and trimmers. Germination begins in late summer, and plants become very noticeable during winter and spring, especially in dormant, warm-season grasses grown in mild winter climates. Annual Bluegrass dies out with the onset of summer heat.
Where Annual Bluegrass is Found Geographically
Common throughout the United States.
Similar or Related Plants
Kentucky Bluegrass—Poa pratensis, which is perennial and a desirable turfgrass.