Lawn Care Guide for Union Parish
Union Parish, Louisiana
Data Story
About Lawn Care in Union Parish, Louisiana
Union Parish faces sandy obstacles
Union Parish earns a 28.0 lawn difficulty score, placing it below the state average of 33.8. Located in Zone 8b, it experiences cooler winters than the southern parishes but maintains similar challenges.
Balanced rain and standard heat
With 58.4 inches of rain, Union is closer to the national ideal than many of its southern neighbors. It records 83 extreme heat days, aligning almost perfectly with the Louisiana state average of 84.
Sandy soil with drainage issues
The soil is remarkably sandy at 49.8%, yet it is classified as 'poorly drained' silt loam. The pH of 5.15 is quite acidic, meaning regular lime applications are necessary to keep the grass healthy.
Monitoring abnormally dry conditions
The entire parish is currently classified as abnormally dry, though it has avoided severe drought levels so far. Because the sandy soil loses moisture quickly, adding compost can help improve water retention.
Wait for late March warmth
Zoysia or Centipede grass are ideal for the sandy silt loam found in this parish. Wait until after the last frost on March 25 to ensure your new lawn isn't damaged by a late cold snap.
Lawn Difficulty Score
Recommended Grasses
Bermudagrass
Cynodon dactylon
Climate Snapshot
Annual Precip
58.4"
Growing Degree Days
5,829.8
Base 50F
Last Spring Frost
03/25
First Fall Frost
11/16
Days Above 95F
83
Hardiness Zone
8b
Seeding Calendar — Zone 8B
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
0.0"
inches of water
Monthly Water
0
gallons
Estimated Monthly Cost
$0.00
at $0.008/gallon average
Estimates based on 58" annual precipitation and estimated evapotranspiration. Actual costs vary by local water rates.
Common Lawn Problems in Union Parish
Excess Moisture & Fungal Disease
High annual rainfall (58 inches) increases risk of fungal diseases like brown patch and dollar spot. Ensure good drainage and avoid overwatering.
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.
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