Ohio Extension & Soil Testing Directory
Find your local Ohio County Cooperative Extension office, official state university soil analysis lab, and Master Gardener volunteer plant clinics.
🔬 State Soil Testing Laboratory
Official Lab: OSU Extension Recommended Soil Testing Partner Labs
Standard Fee: $15 per routine garden 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: High-Lime Glacial Till Silt Loam and Clay Loam
Hardiness Zones: Zone 6a
Popular Crops: Corn, soybeans, tomatoes, apples, cool-season turf
Central Ohio soils are derived from limestone; check soil pH before adding extra lime.
Featured County Directories in Ohio (1 Listing)
Franklin County
Extension Office: OSU Extension - Franklin County
Soil Lab Fee: $15 per routine garden sample
Phone: (614) 866-6900
Looking for Another County in Ohio?
Every county in Ohio 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 OSU Extension Recommended Soil Testing Partner Labs or contact our editorial desk for direct local office hours.
Request Local Extension Info for Your CountyFrequently Asked Questions: Ohio Soil & Extension
How do I get my soil tested in Ohio?
To test your soil in Ohio, 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 OSU Extension Recommended Soil Testing Partner Labs or your local county extension office.
How much does soil testing cost in Ohio?
Routine soil fertility analysis in Ohio typically costs $15 per routine garden sample. Turnaround time for results is usually 5 to 7 business days.
Does every county in Ohio have a Cooperative Extension Office?
Yes. Every county in Ohio 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 Ohio.
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.