Grass or grass-like · Poaceae
Glaucous bluegrass
Poa glauca · includes its varieties and subspecies
Glaucous bluegrass is recorded as native to 20 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 137 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Glaucous bluegrass at a glance
- Native in
- 137 counties, across 20 states and territories
- Estimated cold hardiness
- Zone 3a PLANTS minimum temperature −40°F
- Mature height
- 2 ft PLANTS mature height
- Light and water
- Full sun (shade-intolerant) Moisture use not recorded
Estimated cold hardiness: zone 3a. PLANTS gives a minimum temperature of −40°F; zone 3a winters bottom out at −40°F, the coldest half-zone that stays within that limit.
Glaucous bluegrass is recorded as native to 20 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 137 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 137 where it is listed.
Native counties by state
- Alaska 19 counties
- Arizona 2 counties
- California 8 counties
- Colorado 21 counties
- Idaho 5 counties
- Maine 4 counties
- Michigan 6 counties
- Minnesota 4 counties
- Montana 1 county
- Nevada 5 counties
- New Hampshire 2 counties
- New Mexico 7 counties
- New York 1 county
- Oregon 3 counties
- Pennsylvania 1 county
- Utah 22 counties
- Vermont 6 counties
- Washington 7 counties
- Wisconsin 2 counties
- Wyoming 11 counties
Growing traits
Values from the PLANTS characteristics record. “Not recorded” means PLANTS has no value; nothing here is estimated except the zone.
Growth
- Growth habit
- Graminoid
- Duration
- Perennial
- Mature height
- 2 ft
- Growth rate
- Moderate
- Growth form
- Rhizomatous
- Shape
- Erect
- Lifespan
- Short
- Active growth period
- Summer
Light and water
- Shade tolerance
- Intolerant (full sun (shade-intolerant))
- Moisture use
- Not recorded
- Drought tolerance
- Medium
- Tolerance of waterlogged soil
- Low
- Precipitation range
- 10 to 59 in per year
Soil
- Soil textures
- Coarse
- pH range
- Not recorded
- Lime (CaCO₃) tolerance
- High
- Salinity tolerance
- Not recorded
- Fertility requirement
- Medium
- Minimum root depth
- 12 in
Climate
- Minimum temperature
- −40°F
- Estimated cold hardiness
- Zone 3a and warmer
- Minimum frost-free days
- 120
- Fire tolerance
- Not recorded
Flowers, leaves and fruit
- Flower color
- Purple
- Showy flowers
- No
- Bloom period
- Mid Summer
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- Brown
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- Routinely Available
- Family
- Poaceae
- PLANTS symbol
- POGL
Source & data date
- Source
- USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
- Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
- USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
- Citation
- USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
- Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
- Data date
- Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
- Scope
- Poa glauca (PLANTS symbol POGL), including 2 varieties and subspecies folded into the species.
- Method
- A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources