Mowing Height
Irrigation
Shade Tolerance
Kentucky Bluegrass
Poa pratensis
Introduction
Kentucky Bluegrass is a cool-season turfgrass prized for its rich, dark-green color, fine texture, and dense, carpet-like growth. It is the classic lawn grass of northern climates, providing a soft and durable surface that performs best under cool, moist conditions. Its ability to recover from damage through underground rhizomes makes it a popular choice for home lawns, sports fields, and parks.
Identification
Kentucky Bluegrass has smooth, boat-shaped leaf tips and a fine to medium blade texture. The grass spreads by rhizomes, forming a dense sod that can self-repair from small patches of damage. It has a bright to dark blue-green hue and a soft feel. When viewed closely, the leaves display a prominent midrib and a glossy underside.
Climate Adaptation
Kentucky Bluegrass thrives in cool to temperate climates with cold winters and mild summers. It performs best in regions with adequate rainfall or irrigation and well-drained soils. It is not well suited to areas with prolonged heat or drought but can persist in the transition zone with supplemental irrigation.
Advantages
- Deep, rich color and fine texture give it an elegant appearance
- Forms a dense, self-repairing sod through rhizomes
- Excellent cold tolerance and winter hardiness
- Soft and comfortable underfoot
- Suitable for blends with perennial ryegrass or fescue to improve establishment and durability
Challenges
- Poor heat and drought tolerance without irrigation
- Can go dormant or thin out during hot, dry summers
- Requires moderate to high fertility and moisture for best performance
- Susceptible to diseases such as leaf spot and summer patch under stress
- Slower germination compared to ryegrass varieties
