Oregon Grass Types

Looking for the optimal grass varieties for lawns in Oregon? Below is a comparison table and accompanying data that will give you information about what grasses are best suited for Oregon and its inner counties.

Note: Cold, heat, drought, and saturation tolerance are measured on a score of 0-5 with 0 being the least tolerant and 5 being the most.

Zoysia Grass

Most suitable grass (on average)

Tall Fescue

2nd most suitable (on average)

Buffalo Grass

Optimal for colder areas

Kentucky Bluegrass

Great for areas with heavy rainfall

Kikuyu Grass

5th most suitable (on average)

Bermuda Grass

Ideal for drought-prone areas

Lawn Visual
Seasonal Type Warm Cool Warm Cool Warm Warm
Cold Tolerance 2.5 4.0 3.5 4.0 1.5 1.0
Heat Tolerance 4.0 3.5 4.0 2.5 4.5 5.0
Drought Tolerance 3.5 3.5 5.0 3.0 4.5 4.5
Saturation Tolerance 2.0 3.0 2.0 3.0 2.5 1.0
USDA Zone(s) 6-13 5-8 5-9 1-7 6-13 8-13
Sun Exposure Full Sun, Partial Shade Mostly Sun, Deep Shade Full Sun, Deep Shade Mostly Sun, Partial Shade Full Sun, Light Shade Full Sun, Light Shade
Traffic
Resistance/Recovery
Moderate, Moderate Moderate, Moderate Low, Slow Moderate, Moderate High, Moderate High, Rapid
Watering
Duration/Amount
Weekly, 1 inch Weekly, 1-1.5 inches Bi-weekly, 0.5 inches Weekly, 1-1.5 inches Weekly, 1-1.25 inches Weekly, 1-1.25 inches
Mowing
Duration/Height
Every 7-10 days, 0.5-1.5 inches Every 5-7 days, 2-3.5 inches Every 10-14 days, 2-3 inches Every 5-7 days, 2.5-3.5 inches Every 7 days, 1-1.5 inches Every 5-7 days, 0.5-1.5 inches
Soil Well-drained, Loamy
pH: 6.0-7.0
Adaptable
pH: 5.5-7.5
Well-drained, Loamy to Sandy
pH: 6.0-7.5
Well-drained, Loamy
pH: 6.0-7.0
Well-drained
pH: 5.5-7.0
Sandy, Well-drained
pH: 5.8-7.0
Texture Fine to Medium Coarse Fine Fine to Medium Medium to Coarse Fine to Medium
Color Light Green Dark Green Blue-Green Rich Green Dark Green Dark Green

Oregon Zones

The interactive map below shows the USDA plant hardiness zones specific to Oregon. Each zone in the map represents a certain temperature range that is critical for plant survival and growth, divided based on the average annual minimum winter temperature. Click on the map to see the optimial grass types for each county.

Zone No. 5 6 7 8 9
Map Color
Lowest Avg. Winter Temperature -20° to -10°F -10° to 0°F 0° to 10°F 10° to 20°F 20° to 30°F

The chart and table below shows the average monthly precipitation and minimum/maximum temperatures in Oregon over the last 5 years.

Month Min Temp (°F) Max Temp (°F) Prep (in)
Jan28.02 °F42.86 °F4.41"
Feb24.44 °F42.44 °F3.37"
Mar28.5 °F49.6 °F2.38"
Apr33.06 °F56.58 °F2.84"
May39.76 °F64.46 °F2.32"
Jun45.94 °F73.56 °F1.49"
Jul52.34 °F84 °F0.16"
Aug51.92 °F83.2 °F0.3"
Sep45.22 °F74.18 °F1.26"
Oct36.58 °F61.44 °F1.91"
Nov29.22 °F48.08 °F3.3"
Dec25.58 °F39.76 °F4.71"

The chart below shows the optimal months for seeding or sodding new grass in Oregon. Suitability for each month is based on the average monthly temperature in Oregon.

July and August are the most optimal months for planting cool-season grasses in Oregon.

July and August are the most optimal months for planting warm-season grasses in Oregon.

Grass Types by County in Oregon

Below is a list of counties in Oregon. Click on any county to get a more detailed analysis.

Data source and citation

Raw data for the grass characteristics was sourced from the USDA's PLANTS Database.

Data for climate zones in Oregon was gathered from the USDA Plant Hardiness Zone Map as well as GIS datasets from the Oregon State University PRISM Climate Group.

Average monthly temperatures and precipitation data for Oregon was sourced from the NOAA National Centers for Environmental information.

Please use the citation tool below to reference any information found on this page.

  • "Oregon Grass Types". LawnVariety.com. Accessed on July 19, 2024. https://lawnvariety.com/oregon.

  • "Oregon Grass Types". LawnVariety.com, https://lawnvariety.com/oregon. Accessed July 19, 2024

  • Oregon Grass Types. LawnVariety.com. Retrieved from https://lawnvariety.com/oregon.