bluegrass, annual

COMMON NAME: Bluegrass, annual
SCIENTIFIC NAME: Poa annua
FAMILY: Poaceae
LIFECYCLE: Annual, possible perennial var. reptans
FEATURES: Growth habit: Light green clump-like to creeping plant; Stem: Flattened glabrous. Entire
plant glabrous. Leaf sheath glabrous and folded. ; Leaf: Keel-shaped leaf tip, 0.5 to 1cm
wide.; Collar: collar with a white collar band, glabrous. Producing a membranous ligule;
Inflorescence: A pyramidal shaped panicle with 6 to 12 branching spiklets.
DESCRIPTION: Annual grass widely distributed throughout the world. In Alabama, primarily exists as an
annual in the winter months with flowering occurring from February to May. Forms a
clump-like plant, light green in color. Perennial biotype can be dark green and creeping.
Can occur in almost any managed turfgrass environment, from golf course putting greens to home lawns.

Additional Clump-like annual growth habit

Additional
Clump-like annual growth habit

Broad View Poa annua var. annua (Huntsville Population)

Broad View
Poa annua var. annua (Huntsville Population)

Broad View Poa annua var. reptans (Birmingham Population)

Broad View
Poa annua var. reptans (Birmingham Population)

Flower / Seed Head Seedhead

Flower / Seed Head
Seedhead

Leaf Membraneous ligule

Leaf
Membraneous ligule