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Johnson County

Research-based Information You Can Trust — Localized for your needs

Johnson County
11811 S. Sunset Drive
Suite 1500
Olathe, KS 66061

Office Hours:

Make an appointment, before coming into the office.

Monday - Friday,
8:30 a.m. - 5 p.m.

(913) 715-7000
(913) 715-7005 fax

Map to our office

K-State Research and Extension is committed to making its services, activities and programs accessible to all participants. Reasonable accommodations for persons with disabilities may be requested by contacting Johnson County Extension at (913)715-7000. Notify staff of accommodation needs as early as possible.

Kansas State University Agricultural Experiment Station and Cooperative Extension Service

K-State Research and Extension is an equal opportunity provider and employer.

Extension Master Gardeners

Extension Master Gardener (EMG) is an educational volunteer program sponsored by K-State Research and Extension.

EMGs come from all walks of life but their common bond is a love of gardening and sharing information throughout the community. EMGs receive a basic training in the disciplines of horticulture. They then volunteer in projects to help Extension promote its educational mission.

Educational Projects include:

Mission Statement
Johnson County K-State Research and Extension Master Gardeners volunteer to preserve and beautify the environment and improve the quality of life in the community by providing current research-based horticultural information to the public. EMGs promote horticultural practices, sustainability, and environmental initiatives supported by K-State Research and Extension. The organization embodies the horticultural education objectives of the Johnson County Extension Council cooperating with Kansas State University and the United States Department of Agriculture.



Learn more about the International Master Gardener Conference in 2023. 


2020 Extension Master Gardeners Statistics*

Extension Master Gardeners (EMG):

  • Total on Roster: 450
  • Volunteers submitting Hours: 388
  • Total Number of Hours: 29,285
  • Average per EMG: 75
  • FTE equivalent: 14.07
  • Value of volunteer time @ $27.20 = $796,552

Vegetables Donated:

  • 4812 pounds of fresh produce or 14,436 servings of fresh fruits and vegetable from demonstration gardens to those in need (1 pound = 3 servings) Deanna Rose: 880 lbs, SIM: 850 lbs and BYG: 3082 lbs
  • Food Pantries Receiving Food Donations
    • Roeland Park Methodist Church
    • Village Presbyterian Food Pantry
    • Free Hot Soup
    • Catholic Charities
    • New Hope Lutheran Church
    • Overland Park Christian Church
    • Mission Southside, Olathe

Contacts: EMG contacts with the public

  • Community Outreach : 0 contacts on the reporting website
  • EMG Contacts : 4455 self-reported from website
  • Hotline : 5832
  • JMG Program School: 437 contacts
  • Speakers Bureau: 13 presentations reaching 198 attendees in the community with $245 honorariums.
  • Wildlife Habitat Committee: 0 contacts
  • Total contacts = 10,922
*2020 data was untypical due to COVID-19 safety precautions.

2019 Extension Master Gardeners Statistics

Extension Master Gardeners (EMG):

  • Total number of volunteer hours: 48,582 hours
  • Our donated/volunteer time is equivalent of 23.36 full-time employees
  • Value of volunteer time = $1,235,440

Vegetables Donated to Food Pantries:

  • 4706 pounds (2+ tons) of fresh produce
  • Our donated food is equivalent to 14,118 servings of fresh fruits and vegetables for local families in need. 

EMG contacts with the public (thru classes, gardens, hotline calls, etc):

  • 42,147 people 



Make a donation

Support the work of the EMG volunteers and their mission of education.


Book cover for Untangled

Purchase Untangled: Straight Talk from Passionate Gardeners

written by our Extension Master Gardeners

Contact Us

Dennis Patton
Horticulture Agent

Tom Good
Horticulture Assistant

Karen Bailey
Extension Master Gardener Coordinator

For Members Only

EMGs, click on the above link to log-in.