LawnByCounty

Lawn Care Guide for Windham County

Windham County, Vermont

USDA SSURGO / PHZM

Data Story

About Lawn Care in Windham County, Vermont

Vermont’s Most Challenging Lawn Conditions

Windham County faces a difficult road with a lawn score of just 16.1, the lowest among its neighbors. Despite being in the slightly warmer Hardiness Zone 5b, various environmental factors make turf maintenance a significant struggle.

Excessive Rainfall and Limited Data

The county receives a massive 56.2 inches of annual precipitation, which exceeds the ideal range and can lead to saturated roots or runoff issues. While specific temperature and GDD data are limited, the high rainfall is a primary driver of local lawn management.

Acidic Soil in a Wet Climate

Soil pH sits at 4.56, requiring heavy lime applications to make the environment hospitable for grass. With 41.8% sand, nutrients from fertilizers may leach away quickly during the county's heavy rain events.

Persistent Dryness Despite High Rain

Paradoxically, 100% of the county is currently abnormally dry after 37 weeks of drought conditions this past year. This volatility makes consistent irrigation planning difficult for homeowners who may swing from floods to dry spells.

Zone 5b Planting Strategies

Take advantage of the Zone 5b climate by using robust Turf-Type Tall Fescues that can handle both moisture and dry periods. Because local frost dates are unavailable in this dataset, monitoring local soil temperatures for 50-60°F is the best way to time your seeding.

Lawn Difficulty Score

26/100
Easy
Rainfall22/100
Soil Quality20/100
Temperature0/100
Growing Season40/100
Drought71/100

Soil Summary

pH

4.6

Texture

N/A

Drainage

N/A

Organic Matter

22.6%

View full soil details

Top Grass Fit for Windham County

81/ 100

Excellent match

Jonathan Green Black Beauty Ultra

Jonathan Green

Top cultivar score: 81/100

USDA Zone Match100

Zone 5b vs Tall Fescue's 3–8 band.

Soil pH Fit30

Soil pH 4.55737091042811 vs Tall Fescue's 5.5–6.5 window.

Moisture Fit100

Precipitation 56.21" + soil AWC vs Tall Fescue's 20–30" need.

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.
From The Lawn Report editorial review • rated 4.7/5
Shop Jonathan Green Black Beauty Ultra

In Windham County, USDA zone 5b, soil pH 4.6, Jonathan Green Black Beauty Ultra scores 81/100 — a strong zone match and adequate moisture.

Why we ruled these out

  • Scotts Turf Builder BermudagrassUSDA zone 5b is below Scotts Turf Builder Bermudagrass's effective range (6–11); not recommended for this county.

See our fit-score methodology for how survivability is determined.

Recommended Grasses

Cool-Season

Kentucky Bluegrass

Poa pratensis

Drought: 2/5Shade: 2/5
Suitability55%
View Seeds
Cool-SeasonTransition Zone

Tall Fescue

Festuca arundinacea

Drought: 4/5Shade: 3/5
Suitability55%
View Seeds
Cool-Season

Perennial Ryegrass

Lolium perenne

Drought: 2/5Shade: 2/5
Suitability55%
View Seeds
Cool-Season

Fine Fescue

Festuca spp.

Drought: 3/5Shade: 5/5
Suitability55%
View Seeds

Best Grass Seed for Windham County

Zone 5bCool-season grasses thrive here.

Find Seeds for Zone 5b

Climate Snapshot

Annual Precip

56.2"

Growing Degree Days

N/A

Base 50F

Last Spring Frost

N/A

First Fall Frost

N/A

Days Above 95F

N/A

Hardiness Zone

5b

Seeding Calendar — Zone 5B

J
F
M
A
M
J
J
A
S
O
N
D
Cool Seed (Best)
Cool Seed (OK)
Cool Seed (Best)
Cool Seed (OK)
Optimal (cool)
Acceptable (cool)
Optimal (warm)
Acceptable (warm)

Seasonal Lawn Care Checklist

Spring

  • Apply pre-emergent herbicide when soil reaches 55F
  • Overseed bare spots once frost risk passes
  • 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

  • Core aerate compacted areas
  • Apply fall fertilizer (highest N application for cool-season)
  • Continue mowing until growth stops
  • Rake or mulch leaves to prevent smothering

Winter

  • Avoid walking on frozen turf
  • Service mower and sharpen blades
  • Plan spring soil amendments based on fall test
  • Keep lawn clear of debris

Watering Deficit Calculator

50020,000 sq ft

Monthly Deficit

0.0"

inches of water

Monthly Water

0

gallons

Estimated Monthly Cost

$0.00

at $0.008/gallon average

Estimates based on 56" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.

Common Lawn Problems in Windham County

Excess Moisture & Fungal Disease

High annual rainfall (56 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.

Acidic Soil

Soil pH of 4.6 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.

Persistent Drought Conditions

Windham County experienced drought conditions for 37 of the past 52 weeks. Prioritize water-efficient grasses and consider reducing lawn area.

Learn more about regional lawn challenges at The Lawn Report.

Lawn Care Advisory: Windham County

Lawn Verdict

Windham County sits in USDA hardiness zone 5b, a transitional zone where cool-season grasses dominate but some warm-season varieties can survive. with winter lows reaching around -15.0°F. High annual precipitation (56.2 inches) supports lush growth but increases disease pressure.

Seasonal Breakdown

Spring seeding is risky here; cool, wet springs favor pre-emergent weed control over renovation. During summer, mow high and water deeply to encourage deep root growth. Fall is the prime seeding season here; aerate, overseed, and fertilize cool-season grasses before October. Winter care focuses on clearing debris and protecting dormant turf from traffic damage.

Watering Guidance

Windham County receives abundant rainfall (56.2 inches annually), so lawns rarely need supplemental irrigation. Currently, 100.0% of the county is in abnormally dry according to the US Drought Monitor.

Regional Context

it is significantly wetter than the state average (12.1 inches more), USDA zone 5b helps guide grass selection compared to neighboring counties.

Want detailed soil composition, drainage classes, and soil series data? View soil details on SoilByCounty.com

Frequently Asked Questions

What USDA hardiness zone is Windham County in?
Windham County is located in USDA hardiness zone 5b, based on the 2023 USDA Plant Hardiness Zone Map. This zone helps determine which grass species are most likely to thrive in the county's climate.
What is the best grass for Windham County?
Kentucky Bluegrass is the top recommendation for Windham County, with a match score of 55/100. It grows best in zones 3a–7a and requires 30–40 inches of water annually.
How much rainfall does Windham County get?
Windham County receives an average of 56.2 inches of precipitation per year, based on NOAA 30-year climate normals. This abundant rainfall supports a wide range of grass species with minimal supplemental irrigation.
What is the soil pH in Windham County?
The average soil pH in Windham County is 4.6, based on USDA SSURGO data. This acidic soil may benefit from lime application to raise pH for optimal grass growth.

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.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor