Lawn Care Guide for Beaufort County
Beaufort County, South Carolina
Data Story
About Lawn Care in Beaufort County, South Carolina
Coastal Lawn Challenges in Beaufort
Beaufort County scores a 36.1 on lawn difficulty, making it slightly easier to manage than the state average but still below the national median. As a Zone 9a region, your lawn care schedule will start earlier and last longer than almost anywhere else in South Carolina. Expect to face unique coastal conditions that demand specialized turf choices.
High Energy and Coastal Humidity
Beaufort leads the region with a massive 6,650 growing degree days, meaning your grass stays active almost year-round. While the 45.0 inches of rain is slightly lower than the state average, the 66 extreme heat days create a high-stress environment. You will find yourself mowing much earlier in the spring due to the very early March 3 frost date.
Managing Poorly Drained Loamy Sand
The soil here is a poorly drained loamy fine sand with a pH of 5.10, which is quite acidic for most turf. While the sand content is high at 71.4%, the poor drainage means water can sit on the surface, potentially leading to fungal issues. You must use lime to raise the pH and consider aeration to improve oxygen flow to the roots.
Severe Drought Hits the Coastline
Currently, 100% of Beaufort is in severe drought, following a year with 20 weeks of dry conditions. In this coastal environment, salt spray can also stress drought-weakened grass, so rinsing your lawn after storms can be helpful. Focus on deep irrigation during these periods to ensure water reaches the roots in the loamy sand.
Leveraging the Longest Growing Season
St. Augustine grass is a coastal favorite here for its salt tolerance and ability to thrive in Zone 9a. With a massive growing window from March 3 all the way to December 9, you have more time than most to establish a lawn. Start your project in early spring to take full advantage of the nearly 10-month frost-free period.
Lawn Difficulty Score
Soil Summary
pH
5.1
Texture
Loamy fine sand
Drainage
Poorly drained
Organic Matter
3.1%
Recommended Grasses
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
45.0"
Growing Degree Days
6,650.4
Base 50F
Last Spring Frost
03/03
First Fall Frost
12/09
Days Above 95F
66
Hardiness Zone
9a
Seeding Calendar — Zone 9A
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
- Raise mowing height to reduce heat stress
- 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
- Overseed with ryegrass for winter color
Watering Deficit Calculator
Monthly Deficit
0.3"
inches of water
Monthly Water
1,055
gallons
Estimated Monthly Cost
$8.44
at $0.008/gallon average
Estimates based on 45" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Beaufort County
Acidic Soil
Soil pH of 5.1 is below the ideal range for most grasses (6.0-7.0). Apply agricultural lime to raise pH gradually.
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.
Explore more data for Beaufort County