Bluegrass, rough-stalk

COMMON NAME: Bluegrass, rough-stalk
SCIENTIFIC NAME: Poa trivialis
FAMILY: Poaceae
LIFECYCLE: Perennial
FEATURES: Growth habit: Creeping growth habit until spring bolting and flowering; Stem: Smooth, glabrous
with swollen stem nodes; Leaf: Smooth, glabrous, with a prominent mid-vein and keel-shaped leaf
tip; Collar: White with large membraneous ligule; Inflorescence: A pyramidal shaped panicle with
6 to 12 branching spiklets. Larger panicle than Poa annua.
DESCRIPTION: Typically viewed as an annual in southeast and warm-season turfgrass climate. Utilized as an
overseeding species, especially for bermudagrass putting greens. Rough-stalk bluegrass is a common
weed in tall fescue due to its presence as a seed contaminant.

Broad View Large seedhead producing plant

Broad View
Large seedhead producing plant

Flower / Seed Head Seedheads

Flower / Seed Head
Seedheads

Flower / Seed Head Seedhead

Flower / Seed Head
Seedhead

Leaf Leaf

Leaf
Leaf

Leaf Collar region

Leaf
Collar region