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.
Delay coring until fall.
Fertilize with 1 pound of actual nitrogen per thousand square feet in February. In absence of soil test results, use a complete (N-P-K) turf-grade fertilizer with a 3-1-2 or 4-1-2 ratio.
Water, if needed, to prevent excessive drying. About 1 inch of water per application each week is adequate.
Remove lawn debris (rocks, sticks, and leaves). Mow lawn at 3 inches and remove clipping debris at spring greenup. Mow before grass gets taller than 5 inches. Remember grasscycling and leave clippings on the lawn.
It is not necessary to remove thatch.
Apply broadleaf herbicides as necessary for control of chickweed, henbit, or other weeds.
Follow September-November fertilization guidelines. Fertilize between February 15 and March 15 at the rate of 1 pound of nitrogen per 1,000 square feet. Quick-release sources of nitrogen, such as urea (46-0-0) and ammonium nitrate (34-0-0), should be watered in immediately to prevent foliar burn.
Follow September-November guidelines. Irrigate dormant turf in warm, windy weather to prevent desiccation. Probe the soil to determine dryness.
Follow September-November guidelines.
If worn or thin areas are heavily used in the fall, overseed with a suitable seed mixture.
Do not cultivate at this time.
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seedhead is an open panicle. spikelets are flattened, with 3-5 seeds each.
leaves folded in the bud
membranous; very short, collar-like, 0.008 - 0.04 inches (0.2 - 1 mm) long
cool season turf
boat shaped; usually V-shaped, sharply creased below; two distinct, clear lines, one on each side of the midrib
0.08 - 0.16 inches (2 - 4 mm) wide
slightly divided by midrib, may have fine hair on edge
closed, but splits with maturity
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