An annual grass, with seeds germinating from late summer, through the winter, and into the following spring. Plants mature from late spring to early summer. Grows well in turf, where it outgrows the desirable turf creating a light green discoloration with abundant seedhead production, and when it dies in the summer it leaves a brown area on the turf.
May be a common weed in turf seed farms, resulting in turf seed contaminated with the Poa seeds. Germinates early and grows throughout the winter, dying out as hot season sets in. Easily adapts to mowing of turf, and will easily produce seed-heads even when mowed regularly. High fertility and irrigation encourage the growth of annual bluegrass.