Louisiana Extension & Soil Testing Directory
Find your local Louisiana County Cooperative Extension office, official state university soil analysis lab, and Master Gardener volunteer plant clinics.
🔬 State Soil Testing Laboratory
Official Lab: LSU AgCenter Soil Testing & Plant Analysis Lab
Standard Fee: $10 per routine soil sample
Turnaround Time: 5 to 7 business days
State residents can obtain soil sample bags and submittal forms at any local county extension branch.
🌱 State Growing Conditions
Soil Types: Mississippi Delta Alluvial Silt & Coastal Clay
Hardiness Zones: Zone 8a / 10a
Popular Crops: Sugarcane, rice, sweet potatoes, pecans, citrus, okra
High humidity and rain wash away nutrients rapidly; apply organic compost before spring planting.
Featured County Directories in Louisiana (6 Listings)
East Baton Rouge Parish
Extension Office: LSU AgCenter Extension - East Baton Rouge Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
Jefferson Parish
Extension Office: LSU AgCenter Extension - Jefferson Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
Orleans Parish
Extension Office: LSU AgCenter Extension - Orleans Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
Caddo Parish
Extension Office: LSU AgCenter Extension - Caddo Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
Lafayette Parish
Extension Office: LSU AgCenter Extension - Lafayette Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
Calcasieu Parish
Extension Office: LSU AgCenter Extension - Calcasieu Parish
Soil Lab Fee: $10 per routine soil sample
Phone: (220) 555-0199
📦 Recommended Mail-In Soil Test Kits & Meters
FTC Affiliate Disclosure: We may earn a commissionIf you need immediate results without waiting for university mail-in lab turnaround times, these top-rated professional home soil test kits provide fast pH, N, P, and K diagnostic analysis:
MySoil Soil Test Kit
Professional mail-in kit analyzed by accredited labs. Returns 13 essential nutrient values (N, P, K, pH, Micronutrients) & customized fertilizer recommendations via app.
Luster Leaf Rapitest 1601
Popular color-comparator kit for 10 instant soil tests (pH, Nitrogen, Phosphorus, Potash). Includes tailored plant preference chart.
Sonkir 3-in-1 Soil Tester
Instant probe sensor for soil moisture, pH, and sunlight levels. Requires no batteries. Perfect for potted plants, lawns, and raised beds.
📋 Request Local Extension & Lawn Testing Assistance in Louisiana Statewide
Need help interpreting your lab results or finding local agricultural extension agents? Fill out the brief form below:
Frequently Asked Questions: Louisiana Soil & Extension
How do I get my soil tested in Louisiana?
To test your soil in Louisiana, collect 10 to 12 soil cores from a depth of 4 to 6 inches across your garden or field, air-dry the sample indoors, fill out your county extension submission form, and submit it to LSU AgCenter Soil Testing & Plant Analysis Lab or your local county extension office.
How much does soil testing cost in Louisiana?
Routine soil fertility analysis in Louisiana typically costs $10 per routine soil sample. Turnaround time for results is usually 5 to 7 business days.
Does every county in Louisiana have a Cooperative Extension Office?
Yes. Every county in Louisiana is served by the state's Land-Grant University Extension system. While our directory highlights primary regional office hubs and university labs, local extension agents serve horticulturists, farmers, and home gardeners across all counties in Louisiana.
Written & Verified by Sahajul
Verified Author & Founder
Sahajul is an independent agricultural data researcher based in India and founder of LocalSoilLab.com. He specializes in compiling, structuring, and verifying US land-grant university extension services, soil lab testing fee schedules, and county Master Gardener contact directories directly from official .edu and USDA NIFA portals.