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 and Plant Analysis Laboratory
Standard Fee: $10 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 River Alluvial Silt & Loam
Hardiness Zones: Zone 9a
Popular Crops: Citrus, figs, pecans, sweet potatoes, centipede turf
High rainfall leaches calcium and magnesium; test soil every 2 years to maintain proper pH.
Featured County Directories in Louisiana (1 Listing)
East Baton Rouge Parish
Extension Office: LSU AgCenter - East Baton Rouge Parish
Soil Lab Fee: $10 routine soil sample
Phone: (225) 389-3055
Looking for Another County in Louisiana?
Every county in Louisiana is supported by the state Land-Grant University Extension system. If your specific county directory is currently being indexed, you can submit your soil samples directly to LSU AgCenter Soil Testing and Plant Analysis Laboratory or contact our editorial desk for direct local office hours.
Request Local Extension Info for Your CountyFrequently 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 and Plant Analysis Laboratory or your local county extension office.
How much does soil testing cost in Louisiana?
Routine soil fertility analysis in Louisiana typically costs $10 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.