Idaho Extension & Soil Testing Directory
Find your local Idaho County Cooperative Extension office, official state university soil analysis lab, and Master Gardener volunteer plant clinics.
🔬 State Soil Testing Laboratory
Official Lab: UI Analytical Sciences Laboratory
Standard Fee: $40 routine soil fertility analysis
Turnaround Time: 7 to 10 business days
State residents can obtain soil sample bags and submittal forms at any local county extension branch.
🌱 State Growing Conditions
Soil Types: Intermountain Alkaline Silt Loam & Volcanic Ash
Hardiness Zones: Zone 4b / 7a
Popular Crops: Potatoes, onions, apples, mint, barley, lawn turf
Intermountain West soils are naturally alkaline; monitor soil salinity and avoid adding lime.
Featured County Directories in Idaho (7 Listings)
Ada County
Extension Office: University of Idaho Extension - Ada County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Canyon County
Extension Office: University of Idaho Extension - Canyon County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Kootenai County
Extension Office: University of Idaho Extension - Kootenai County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Bonneville County
Extension Office: University of Idaho Extension - Bonneville County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Twin Falls County
Extension Office: University of Idaho Extension - Twin Falls County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Bannock County
Extension Office: University of Idaho Extension - Bannock County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 555-0199
Latah County
Extension Office: University of Idaho Extension - Latah County
Soil Lab Fee: $40 routine soil fertility analysis
Phone: (160) 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 Idaho Statewide
Need help interpreting your lab results or finding local agricultural extension agents? Fill out the brief form below:
Frequently Asked Questions: Idaho Soil & Extension
How do I get my soil tested in Idaho?
To test your soil in Idaho, 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 UI Analytical Sciences Laboratory or your local county extension office.
How much does soil testing cost in Idaho?
Routine soil fertility analysis in Idaho typically costs $40 routine soil fertility analysis. Turnaround time for results is usually 7 to 10 business days.
Does every county in Idaho have a Cooperative Extension Office?
Yes. Every county in Idaho 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 Idaho.
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.