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Idaho Master Gardener Program

This program provides participants with in-depth, research-based education on many horticultural topics, from soil organisms to 60-foot shade trees and from thirsty tropical houseplants to drought-tolerant native shrubs.

About the program

Idaho Master Gardeners expand their knowledge and skills in home horticulture and serve their communities as trained volunteers.

With their up-to-date understanding of water-smart landscaping, environmentally astute pest control and landfill-saving composting methods, Idaho’s trainee and certified Master Gardeners and Advanced Master Gardeners donate about 16,000 hours of volunteer time annually.

When they are not responding to homeowners’ questions, Idaho Master Gardeners are:

  • Operating plant diagnostics clinics in UI Extension county offices or at local farmers markets
  • Installing water-efficient landscapes at public sites
  • Beautifying hospitals and senior centers
  • Organizing community vegetable gardens and Plant-a-Row efforts
  • Instructing garden center clients and garden club members
  • Leading 4-H clubs, after-school programs and Junior Master Gardener classes
  • Bringing horticultural knowledge to their communities in many other gratifying ways
Idaho Master Gardener, University of Idaho Extension

2023 Idaho Master Gardener — Benewah County Classes

Idaho Master Gardener Classes

Come and become an Idaho Master Gardener. 

Turn your brown thumb green by learning from experts.

Classes will be held at the Presbyterian Church in St Maries.


Becoming an Idaho Master Gardener

Apply to become an Idaho Master Gardener

  • Contact the UI Extension, Benewah County office and request a Master Gardener interest form.
  • Complete and return the interest form to the UI Benewah County Master Gardener office.
  • Register for core course and pay the course fee. Next course is the spring of 2023.

Complete the Extension Master Gardener core course

  • Complete 35 hours of home horticulture education, offered every other year, Feb. - March. Next course is the spring of 2023.
  • All students must complete online quizzes for each topic module.
  • Courses are taught by Extension educators, faculty or other knowledgeable people in the business.

Share your knowledge: volunteer 35 hours

  • Volunteer for projects and events that deliver horticulture education and information to the public.
  • Report your volunteer hours by Dec. 31.

Celebrate. You’re certified!

  • When your internship is completed, you'll start the next calendar year as an active Idaho Master Gardener in your community.

Stay involved

  • Review the number of volunteer hours and required continuing education hours per year you need to maintain your active Idaho Master Gardener volunteer status.


University of Idaho Extension, Benewah County

Mailing Address:
711 W. Jefferson Ave., Suite 2
Saint Maries, ID 83861

Phone: 208-245-2422

Fax: 208-245-0604



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