Tulsa County, OK Extension Office & Soil Testing Directory
Welcome to the official directory resource for Tulsa County, OK. Connecting local homeowners, urban gardeners, and commercial growers with Oklahoma's land-grant university extension resources, state soil testing lab services, and Master Gardener volunteer clinics.
1. Extension Office Contact Details & Operational Hours
The Oklahoma State University Extension - Tulsa County serves as the primary educational extension center in Tulsa County. Visit or call during standard operational hours for agricultural advice, soil sample kits, and youth 4-H programs.
| Official Office Name: | Oklahoma State University Extension - Tulsa County |
| Physical Address: | Tulsa, Oklahoma 74103 |
| Direct Phone Desk: | (401) 555-0199 |
| Email Contact: | tulsa@okstate.edu |
| Office Hours: | Monday – Friday: 8:00 AM – 4:30 PM |
| Official Web Portal: | https://soilwaterlab.okstate.edu/ |
2. Official Soil Testing Laboratory & Pricing
Testing your soil is the single most important step before adding fertilizers or agricultural lime. The official testing laboratory serving Tulsa County is OSU Soil, Water and Forage Analytical Laboratory.
| Official Testing Lab: | OSU Soil, Water and Forage Analytical Laboratory |
| Lab Location: | 048 Agricultural Hall, Stillwater, OK 74078 |
| Routine Sample Fee: | $10 per routine soil sample |
| Expected Turnaround: | 3 to 5 business days |
| Official Lab Website: | https://soilwaterlab.okstate.edu/ |
How to Collect and Submit a Soil Sample in Tulsa County:
- Pick up a Soil Kit: Pick up official sample boxes and submittal forms at the Oklahoma State University Extension - Tulsa County (Tulsa, Oklahoma 74103).
- Collect Sub-Samples: Use a clean stainless steel trowel to take 10 to 12 soil cores from a 4-to-6-inch depth across your garden or lawn area.
- Air-Dry: Mix sub-samples in a clean plastic bucket and air-dry on clean paper at room temperature (never use an oven).
- Submit Sample: Return your filled soil box to the extension office or mail directly to OSU Soil, Water and Forage Analytical Laboratory.
3. Master Gardener Volunteer Program & Plant Clinic
The Tulsa County Extension Master Gardener Volunteers provides free plant disease diagnostics, lawn care advice, and eco-friendly pest management tips.
| Program Name: | Tulsa County Extension Master Gardener Volunteers |
| Plant Clinic Hours: | Tuesday & Thursday: 9:00 AM – 12:00 PM (Note: Plant clinics run seasonally; call office during winter months) |
| Direct Helpline Phone: | (401) 555-0199 |
| Program Portal: | https://soilwaterlab.okstate.edu/ |
Volunteer Training: Comprehensive horticulture training conducted by Oklahoma State University Extension.
4. Regional Soil & Growing Snapshot for Tulsa County
USDA Plant Hardiness Zone: Zone 6b / 8a
Natural Soil Profile: Oklahoma Red Clay Loam & Sandy Alluvium
Popular Local Crops: Wheat, pecans, watermelons, tomatoes, bermudagrass
Extension Specialist Tip: Oklahoma soils often present acidic surface layers; test pH before establishing lawn turf.
5. 🧮 Interactive Soil Amendment Calculator for Tulsa County
Estimate the recommended agricultural limestone or elemental sulfur needed to adjust your garden soil pH based on local Oklahoma Red Clay Loam & Sandy Alluvium characteristics.
📚 Recommended Extension Guides & Soil Articles
Learn more about interpreting your Tulsa County extension soil test report and managing plant nutrients:
📦 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 Tulsa County, OK
Need help interpreting your lab results or finding local agricultural extension agents? Fill out the brief form below:
Frequently Asked Questions (Tulsa County Directory)
The Oklahoma State University Extension - Tulsa County is located at Tulsa, Oklahoma 74103. You can call their main desk directly at (401) 555-0199 during standard business hours (Monday – Friday: 8:00 AM – 4:30 PM).
Standard soil analysis for Tulsa County garden samples through OSU Soil, Water and Forage Analytical Laboratory costs $10 per routine soil sample. Check with the office for special sample types.
You can reach the Tulsa County Extension Master Gardener Volunteers hotline by calling (401) 555-0199 during plant clinic hours (Tuesday & Thursday: 9:00 AM – 12:00 PM).
Tulsa County falls primarily within USDA Plant Hardiness Zone 6b / 8a. Local soil is characterized as Oklahoma Red Clay Loam & Sandy Alluvium.
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.