Grass or grass-like · Poaceae
Little barley
Hordeum pusillum
Little barley is recorded as native to 42 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 1,054 counties of those states by USDA PLANTS.
Key facts · USDA PLANTS
Little barley at a glance
- Native in
- 1,054 counties, across 42 states and territories
- Estimated cold hardiness
- Zone 10b PLANTS minimum temperature 32°F
- Mature height
- 1.2 ft PLANTS mature height
- Light and water
- Full sun (shade-intolerant) Medium water use
Estimated cold hardiness: zone 10b. PLANTS gives a minimum temperature of 32°F; zone 10b winters bottom out at 35°F, the coldest half-zone that stays within that limit.
Little barley is recorded as native to 42 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 1,054 counties of those states by USDA PLANTS.
Counties where it is native
The 15 counties with the most ZIP codes among the 1,054 where it is listed.
Native counties by state
- Alabama 2 counties
- Arizona 7 counties
- Arkansas 53 counties
- California 3 counties
- Colorado 21 counties
- Connecticut statewide record
- Delaware 1 county
- District of Columbia 1 county
- Florida 19 counties
- Georgia 17 counties
- Idaho 4 counties
- Illinois 87 counties
- Indiana 20 counties
- Iowa 14 counties
- Kansas 105 counties
- Kentucky 39 counties
- Louisiana 63 counties
- Maine 1 county
- Michigan 2 counties
- Minnesota 10 counties
- Mississippi 46 counties
- Missouri 72 counties
- Montana 3 counties
- Nebraska 32 counties
- Nevada 1 county
- New Jersey 3 counties
- New Mexico 16 counties
- New York 5 counties
- North Carolina 66 counties
- North Dakota 2 counties
- Ohio 5 counties
- Oklahoma 40 counties
- Oregon 1 county
- Pennsylvania 2 counties
- South Carolina 32 counties
- South Dakota 7 counties
- Tennessee 45 counties
- Texas 129 counties
- Utah 6 counties
- Virginia 59 counties
- Wisconsin 1 county
- Wyoming 12 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
- Annual
- Mature height
- 1.2 ft
- Growth rate
- Rapid
- Growth form
- Bunch
- Shape
- Erect
- Lifespan
- Not recorded
- Active growth period
- Spring
Light and water
- Shade tolerance
- Intolerant (full sun (shade-intolerant))
- Moisture use
- Medium water use
- Drought tolerance
- Low
- Tolerance of waterlogged soil
- Medium
- Precipitation range
- 10 to 60 in per year
Soil
- Soil textures
- Medium and fine
- pH range
- 6.2 to 8
- Lime (CaCO₃) tolerance
- Medium
- Salinity tolerance
- Medium
- Fertility requirement
- Low
- Minimum root depth
- 8 in
Climate
- Minimum temperature
- 32°F
- Estimated cold hardiness
- Zone 10b and warmer
- Minimum frost-free days
- 80
- Fire tolerance
- None
Flowers, leaves and fruit
- Flower color
- Yellow
- Showy flowers
- No
- Bloom period
- Late Spring
- Foliage color
- Green
- Showy in fall
- No
- Keeps leaves
- No
- Fruit color
- Brown
Other
- Toxicity
- None
- Nitrogen fixation
- None
- Nursery availability
- No Known Source
- Family
- Poaceae
- PLANTS symbol
- HOPU
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
- Hordeum pusillum (PLANTS symbol HOPU).
- 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