Lawn Care Guide for Shoshone County
Shoshone County, Idaho
Data Story
About Lawn Care in Shoshone County, Idaho
Favorable Moisture in Shoshone
Shoshone County scores 48.8 for lawn difficulty, nearly reaching the national median and far outperforming the Idaho average. This Zone 6b county is one of the most lawn-friendly areas in the state. The score reflects a climate that is naturally much better suited for lush turf.
Abundant Rain and Cool Summers
Unlike most of Idaho, Shoshone receives a generous 38.2 inches of annual precipitation, which is right in the ideal range for lawns. With only 11 days of extreme heat, the grass rarely suffers from the scorching temperatures common elsewhere. The lower 1,538 growing degree days mean a slower, more manageable growth rate.
Managing High-Rainfall Soils
In areas with 38 inches of rain, soil can become more acidic, so testing for pH is vital. While specific data for the county is limited, residents should ensure their soil drains well to prevent root rot during wet periods. Adding compost can help maintain the nutrient balance in this high-moisture environment.
Persistent Drought Despite Rain
Surprisingly, Shoshone spent 53 weeks in some level of drought over the past year, with 15.3% of the area in severe drought. This highlight's the importance of having an irrigation backup even in high-precipitation zones. Monitoring local conditions is key to navigating these unusual dry spells.
Green Growth in Zone 6b
Perennial Ryegrass and Kentucky Bluegrass thrive in Shoshone’s cooler, wetter climate. With the last frost usually landing on May 14, mid-to-late May is the perfect time to begin your lawn project. The combination of natural rain and mild summers makes this one of the best places in Idaho to grow a lawn.
Lawn Difficulty Score
Recommended Grasses
Tall Fescue
Festuca arundinacea
Climate Snapshot
Annual Precip
38.2"
Growing Degree Days
1,537.9
Base 50F
Last Spring Frost
05/14
First Fall Frost
09/30
Days Above 95F
11
Hardiness Zone
6b
Seeding Calendar — Zone 6B
Seasonal Lawn Care Checklist
Spring
- Apply pre-emergent herbicide when soil reaches 55F
- Begin mowing when grass reaches 3 inches
- Start irrigation if rainfall is below 1 inch/week
- Soil test every 2-3 years — adjust lime or sulfur as needed
Summer
- Mow at recommended height weekly
- Water deeply 1-2 times per week (1 inch total)
- Avoid fertilizing cool-season grasses in peak heat
- Scout for grubs and treat if >10 per sq ft
Fall
- Overseed warm-season lawns if thinning
- Apply fall fertilizer (highest N application for cool-season)
- Continue mowing until growth stops
- Rake or mulch leaves to prevent smothering
Winter
- Apply pre-emergent for winter weeds
- Service mower and sharpen blades
- Plan spring soil amendments based on fall test
- Keep lawn clear of debris
Watering Deficit Calculator
Monthly Deficit
0.4"
inches of water
Monthly Water
1,176
gallons
Estimated Monthly Cost
$9.41
at $0.008/gallon average
Estimates based on 38" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Shoshone County
Persistent Drought Conditions
Shoshone County experienced drought conditions for 53 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.
Learn more about regional lawn challenges at The Lawn Report.
Want detailed soil composition, drainage classes, and soil series data? View soil details on SoilByCounty.com
Data sourced from USDA SSURGO, NOAA Climate Normals (1991-2020), USDA Plant Hardiness Zone Map, and US Drought Monitor. Lawn difficulty scores and grass recommendations are estimates for informational purposes only.
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