Lawn Care Guide for Benton County
Benton County, Missouri
USDA SSURGO / PHZMThis week in Benton County · next up in about 5 weeks (Sep 3)
Get ready to seed cool-season grass — the best fall window is about to open.
Data Story
About Lawn Care in Benton County, Missouri
Benton County Lawns Meet the Mark
Benton County's lawn difficulty score of 65.5 is slightly better than the Missouri average, making it a solid place for home landscaping. In hardiness zone 6b, the county enjoys a balance of northern and southern climate traits.
Long Seasons and High Degrees
The county sees 4059 growing degree days, resulting in a long and productive growing season. With 43.0 inches of rain and 38 extreme heat days, the climate is slightly more aggressive than the state average but remains manageable for most homeowners.
Addressing Soil Acidity
The local soil pH is 5.88, which is just below the preferred range for most turfgrasses. With a balanced mix of 20.1% clay and 19.8% sand, focusing on pH correction with lime will be more important than changing the soil's physical texture.
Resilience in the Face of Dryness
Benton County experienced 17 weeks of drought over the past year and remains 100% abnormally dry today. Because the county has a long history of dry spells, selecting grass with high drought tolerance is a smart long-term investment.
Planting for a Long Season
Your first fall frost doesn't typically arrive until October 30th, giving you a very long window for growth. Seed your lawn after the April 13th frost, and choose a blend that can withstand the 38 annual days of extreme heat.
Lawn Difficulty Score
Top Grass Fit for Benton County
Excellent match
Jonathan Green Black Beauty Ultra
Jonathan Green
Top cultivar score: 100/100
Zone 6b vs Tall Fescue's 3–8 band.
Soil pH 5.8805691854002 vs Tall Fescue's 5.5–6.5 window.
Precipitation 43.004999999999995" + soil AWC vs Tall Fescue's 20–30" need.
Growing-degree-days + frost window vs a intermediate-difficulty establishment.
If you spend any time on lawn care forums, Reddit's r/lawncare, or YouTube lawn channels, one name comes up more than any other: Jonathan Green Black Beauty Ultra. It's practically a cult favorite, and the label, cultivar story, and long-running owner reports explain why. The secret is in the genetics.
In Benton County, USDA zone 6b, soil pH 5.9, Jonathan Green Black Beauty Ultra scores 100/100 — a strong zone match, adequate moisture, and a long enough establishment window.
Recommended Grasses
Tall Fescue
Festuca arundinacea
Choosing grass in Benton County
Your silty soil and cool-season conditions narrow the field fast. Here's how to think it through for Benton County — then the specific pick.
- Best cool-season grass seed for fallYour prime seeding window and the top cool-season picks.
- How grass cultivars get scored (NTEP)The independent trial data behind every species ranking.
- Tall Fescue, explainedTraits, care, and where Tall Fescue wins — the species behind your top match.
Top match for Benton County: Tall Fescue
See the full breakdownPremium Grass Seeds is a sister site in our network. We may earn a commission from qualifying purchases made through its retailer links — this never affects your price. Guidance here reflects your county’s climate and soil data, not hands-on testing.
Climate Snapshot
Annual Precip
43.0"
Growing Degree Days
4,059.2
Base 50F
Last Spring Frost
04/13
First Fall Frost
10/30
Days Above 95F
38
Hardiness Zone
6b
Seeding Calendar — Benton County
Personalized to this county’s frost dates — a 200-day growing season. Windows below are computed from local last-spring and first-fall frost normals, so they differ county-to-county even within USDA Zone 6B.
Plan your seeding — Benton County
Pick a grass and a goal to get a personalized schedule anchored to this county’s frost dates.
- 1Prepare the seedbedAug 20 – Sep 2
Mow low, dethatch or rake, and loosen the top ½ inch of soil so seed makes good contact.
- 2Sow seedSep 3 – Oct 1
Best window to sow Tall Fescue in Benton County, anchored to your local frost dates.
- 3EstablishOct 2 – Oct 29
Protect young seedlings: mow only after they reach ~3 inches and hold off on weed pre-emergents until established.
Silt retains moisture well — keep the seedbed consistently damp with about ¼ inch once daily, easing off if the surface stays wet to avoid damping-off.
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
1,147
gallons
Estimated Monthly Cost
$9.17
at $0.008/gallon average
Estimates based on 43" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Lawn Care Advisory: Benton County
Lawn Verdict
Benton County sits in USDA hardiness zone 6b, a transitional zone where cool-season grasses dominate but some warm-season varieties can survive. with winter lows reaching around -5.0°F. and 4,059.2 growing degree days annually, supporting vigorous warm-season lawns. Moderate rainfall (43.0 inches) generally supports healthy lawns with minimal supplemental watering.
Seasonal Breakdown
Wait until after April 13 to seed or overseed; soil temperatures should consistently reach 50-55°F. Cool summers (July averages 78.3°F) reduce heat stress — maintain regular mowing and moderate watering. With 38.2 days above 90°F annually, warm-season grasses recover faster from summer stress than cool-season types. Aerate and overseed cool-season lawns by early fall, well before October 30; this is the best renovation window. Cool winters (January averages 30.6°F) mean slow or dormant growth; keep debris off the lawn.
Watering Guidance
With 43.0 inches of annual rainfall, established lawns typically need watering only during extended dry spells. Currently, 100.0% of the county is in abnormally dry according to the US Drought Monitor. Standard warm-season watering of 1 inch per week is usually adequate during summer.
Regional Context
Benton County is close to the Missouri average temperature, USDA zone 6b helps guide grass selection compared to neighboring counties.
Dig deeper into Benton County
Benton County is a USDA Zone 6B, silty-soil, cool-season county. Explore the data that shapes its lawn:
Want detailed soil composition, drainage classes, and soil series data? View soil details on SoilByCounty.com
Frequently Asked Questions
What USDA hardiness zone is Benton County in?
What is the best grass for Benton County?
How long is the growing season in Benton County?
How much rainfall does Benton County get?
What is the soil pH in Benton County?
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.
Explore more data for Benton County