Common Name: bluegrass, Kentucky
Species: Poa pratensis L.
Bayer Code: POAPR

Kentucky bluegrass is the second most widely grown cool-season species in North Carolina because it has a dark green color, a medium to fine texture, and, due to its aggressive rhizome system, can recover from stresses. It prefers fertile, well-limed soils and full sun to moderate shade. Kentucky bluegrass is often mixed with other cool-season grasses like tall fescue to enhance the ability of the turfgrass stand to recover from stresses. Kentucky bluegrass is often confused with tall fescue and/or perennial ryegrass. However, Kentucky bluegrass has a boat-shaped leaf tip and distinctive light-colored lines on both sides of the midrib.
Kentucky bluegrass turf
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Kentucky bluegrass ligule
Kentucky bluegrass
Kentucky bluegrass sheath margin, auricles
Kentucky bluegrass leaf tip
Seedhead / Flower panicleseedhead is an open panicle. spikelets are flattened, with 3-5 seeds each.
Vernation Type foldedleaves folded in the bud
Ligule Type membranousvery short, collar-like, 0.008 - 0.04 inches (0.2 - 1 mm) long
Growth Season / Life Cycle cool season turf 
Auricle Type absent 
Leaf Blade Tip Shape boat shapedusually V-shaped, sharply creased below; two distinct, clear lines, one on each side of the midrib
Leaf Blade Width narrow, less than 0.1 in OR medium, 0.1 - 0.2 in0.08 - 0.16 inches (2 - 4 mm) wide
Stolon Presence absent 
Rhizome Presence present 
Collar Type dividedslightly divided by midrib, may have fine hair on edge
Sheath Margin closed OR openclosed, but splits with maturity
Sheath Type flattenednot hairy