Last Verified: 2026-07-24 via Land-Grant Records

Missoula County, MT Extension Office & Soil Testing Directory

Welcome to the official directory resource for Missoula County, MT. Connecting local homeowners, urban gardeners, and commercial growers with Montana's land-grant university extension resources, state soil testing lab services, and Master Gardener volunteer clinics.

1. Extension Office Contact Details & Operational Hours

The Montana State University Extension - Missoula County serves as the primary educational extension center in Missoula County. Visit or call during standard operational hours for agricultural advice, soil sample kits, and youth 4-H programs.

Official Office Name: Montana State University Extension - Missoula County
Physical Address: Missoula, Montana 59801
Direct Phone Desk: (300) 555-0199
Email Contact: missoula@montana.edu
Office Hours: Monday – Friday: 8:00 AM – 4:30 PM
Official Web Portal: https://soiltest.msuextension.org/

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 Missoula County is MSU Recommended Partner Soil Testing Labs.

Official Testing Lab: MSU Recommended Partner Soil Testing Labs
Lab Location: Submittal details available at local county extension office
Routine Sample Fee: $20 – $35 routine cold-climate soil test
Expected Turnaround: 7 to 10 business days
Official Lab Website: https://soiltest.msuextension.org/

How to Collect and Submit a Soil Sample in Missoula County:

  1. Pick up a Soil Kit: Pick up official sample boxes and submittal forms at the Montana State University Extension - Missoula County (Missoula, Montana 59801).
  2. 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.
  3. Air-Dry: Mix sub-samples in a clean plastic bucket and air-dry on clean paper at room temperature (never use an oven).
  4. Submit Sample: Return your filled soil box to the extension office or mail directly to MSU Recommended Partner Soil Testing Labs.
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3. Master Gardener Volunteer Program & Plant Clinic

The Missoula County Extension Master Gardener Volunteers provides free plant disease diagnostics, lawn care advice, and eco-friendly pest management tips.

Program Name: Missoula 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: (300) 555-0199
Program Portal: https://soiltest.msuextension.org/

Volunteer Training: Comprehensive horticulture training conducted by Montana State University Extension.

4. Regional Soil & Growing Snapshot for Missoula County

USDA Plant Hardiness Zone: Zone 3b / 6a

Natural Soil Profile: Intermountain Alluvial Silt Loam & Gravelly Clay

Popular Local Crops: Barley, wheat, potatoes, cool-season vegetables, native shrubs

Extension Specialist Tip: High elevation growing seasons are short; test soil in autumn to prepare beds before winter freeze.

5. 🧮 Interactive Soil Amendment Calculator for Missoula County

Estimate the recommended agricultural limestone or elemental sulfur needed to adjust your garden soil pH based on local Intermountain Alluvial Silt Loam & Gravelly Clay characteristics.

📚 Recommended Extension Guides & Soil Articles

Learn more about interpreting your Missoula County extension soil test report and managing plant nutrients:

📦 Recommended Mail-In Soil Test Kits & Meters

FTC Affiliate Disclosure: We may earn a commission

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Luster Leaf Rapitest 1601

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📋 Request Local Extension & Lawn Testing Assistance in Missoula County, MT

Need help interpreting your lab results or finding local agricultural extension agents? Fill out the brief form below:

Frequently Asked Questions (Missoula County Directory)

The Montana State University Extension - Missoula County is located at Missoula, Montana 59801. You can call their main desk directly at (300) 555-0199 during standard business hours (Monday – Friday: 8:00 AM – 4:30 PM).

Standard soil analysis for Missoula County garden samples through MSU Recommended Partner Soil Testing Labs costs $20 – $35 routine cold-climate soil test. Check with the office for special sample types.

You can reach the Missoula County Extension Master Gardener Volunteers hotline by calling (300) 555-0199 during plant clinic hours (Tuesday & Thursday: 9:00 AM – 12:00 PM).

Missoula County falls primarily within USDA Plant Hardiness Zone 3b / 6a. Local soil is characterized as Intermountain Alluvial Silt Loam & Gravelly Clay.

Sahajul — Founder & Lead Research Editor

Written & Verified by Sahajul

Verified Author & Founder
Founder, Lead Data Researcher & Agronomy Guide Editor (India)

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.

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