Master Gardener Programs

Master Gardener Programs have existed in the U.S. since 1973.  They exist in all 50 states and the District of Columbia.

Master Gardener Programs By State

Below, you will find a list of land-grant universities with a Cooperative Extension Service offering Master Gardener programs in each state. Through their Cooperative Extension, these universities  are responsible for distributing and disseminating the latest scientific gardening and horticultural information, often developed through research at those universities, into the local communities around their state.  Each county’s Extension Office and ultimately Master Gardener volunteers are instrumental in disseminating this vital information to community members.

You can visit the Cooperative Extension portion of the land-grant university’s website listed below in your state to find out more about the state’s Master Gardener program.  If the university site does not list contact information for your local Extension Office, just search Google for the Extension Office in your county and state.

How do Master Gardener Programs Work?

Master Gardener programs are designed to train volunteers in the latest gardening and horticulture methods and technologies so that they can assist the Cooperative Extension Service of the state’s land-grant university with the dissemination of such information to members of their community at the local level. 

Each county in each state typically has a government-run Extension office.  Occasionally, there may be a single office that serves multiple counties.  One purpose of this office is to administer the state’s Master Gardener program by training the county’s residents as volunteer Master Gardeners.  They also field questions about gardening and horticulture from the community and, where applicable, dispatch Master Gardener volunteers to assist community members with problems and projects.

Master Gardener training programs typically require 40-70 hours of course work and 40-75 hours of volunteer work during the first year.  Once a volunteer has been certified, they must typically volunteer 20-30 hours during each subsequent year to maintain their certification.  They may also be required to participate in a certain number of hours in Continuing Education each year.  Additionally, some states offer multiple levels of training and certification as a Master Gardener.

Alabama Master Gardener Program

 Alabama Cooperative Extension Program
Alabama A&M and Auburn Universities
(877) 252-GROW or (877) 252-4769

Alaska Master Gardener Program

 Cooperative Extension Service
University of Alaska Fairbanks
(877) 520-5211 or (907) 452-5211

Arizona Master Gardener Program

 Arizona Cooperative Extension
The University of Arizona
(520) 621-7205

Arkansas Master Gardener Program

 Cooperative Extension Service
University of Arkansas
(888) 884-5565

California Master Gardener Program

 Cooperative Extension
University of California
(650) 726-9059

Colorado Master Gardener Program

 CSU Extension Service
Colorado State University
(970) 491-6281

Connecticut Master Gardener Program

 UConn Extension
University of Connecticut
(860) 409-9053

Delaware Master Gardener Program

 Cooperative Extension
University of Delaware
(302) 831-2501

District of Columbia Master Gardener Program

 Cooperative Extension Service
University of the District of Columbia
(202) 274-5000

Florida Master Gardener Program

 Institute of Food and Agriculture Sciences Extension
University of Florida
(352) 273-4521

Georgia Master Gardener Program

 UGA Extension
University of Georgia
(770) 228-7243

Hawai'i Master Gardener Program

 UH Cooperative Extension
University of Hawai'i at Manoa
(808) 956-8139

Idaho Master Gardener Program

 UI Cooperative Extension
Univerisity of Idaho
(802) 885-6111

Illinois Master Gardener Program

 Illinois Extension Service
University of Illinois
(217) 333-5900

Indiana Master Gardener Program

 Purdue Extension Service
Purdue University
(888) EXT-INFO or (888) 398-4636

Iowa Master Gardener Program

 Extension and Outreach
Iowa State University
(800) 262-3804

Kansas Master Gardener Program

 Extension Horticulture & Natural Resources
Kansas State University
(785) 532-6170

Kentucky Master Gardener Program

 Coopertive Extension
University of Kentucky
(859) 257-4302

Louisiana Master Gardener Program

 Louisiana Cooperative Extension Service
Louisiana State University
(225) 578-4161

Maine Master Gardener Program

 Cooperative Extension
The University of Maine
(207) 581-3188

Maryland Master Gardener Program

 Maryland Extension Service
University of Maryland
(410) 531-5557

Massachusetts Master Gardener Program

 Massachusetts Master Gardener Association

NOTE: The Massachusetts Master Gardener program is no longer run by the UMass, Amherst Extension.

Michigan Master Gardener Program

 MSU Extension
Michigan State University
(517) 355-1855

Minnesota Master Gardener Program

 UMN Extension
University of Minnesota
(612) 624-1222

Mississippi Master Gardener Program

 Mississippi Extension Service
Mississippi State University
(662) 325-2323

Missouri Master Gardener Program

 MU Extension Service
University of Missouri
(573) 882-7786

Montana Master Gardener Program

 MSU Extension Service
Montana State University
(406) 994-2120

Nebraska Master Gardener Program

 Nebraska Extension
University of Nebraska - Lincoln
(402) 472-8973

Nevada Master Gardener Program

 Nevada Extension Service
University of Nevada - Reno
(775) 784-7070

New Hampshire Master Gardener Program

 UNH Cooperative Extension
University of New Hampshire
(800) 735-2964

New Jersey Master Gardener Program

 NJAES Cooperative Extension
Rutgers University
(973) 228-2210

New Mexico Master Gardener Program

 NM State Extension Plant Services
New Mexico State University
(575) 646-2771

New York Master Gardener Program

 Cornell Cooperative Extension
Cornell University
(607) 255-2237

North Carolina Master Gardener Program

 NC Cooperative Extension
North Carolina State University
(919) 515-2813

North Dakota Master Gardener Program

 NDSU Extension
North Dakota State Extension
(701) 231-7406

Ohio Master Gardener Program

 OSU Cooperative Extension
Ohio State University
(614) 292-6181

Oklahoma Master Gardener Program

 Oklahoma Cooperative Extension Service
Oklahoma State University
(405) 744-5398

Oregon Master Gardener Program

 OSU Extension Service
Oregon State University
(541) 737-4197

Pennsylvania Master Gardener Program

 Penn State Extension
Pennsylvania State University
(877) 345-0691

Rhode Island Master Gardener Program

 URI Cooperative Extension
University of Rhode Island
(401) 874-2900

South Carolina Master Gardener Program

 Cooperative Extension Services
Clemson University
(843) 596-2993

South Dakota Master Gardener Program

 SDSU Extension
South Dakota State University
(605) 688-4792

Tennessee Master Gardener Program

 Agricultural Extension Service
University of Tennessee
(423) 798-1710

Texas Master Gardener Program

 AgriLife Extension Service
Texas A&M University
(979) 845-7800

Utah Master Gardener Program

 USU Extension
Utah State University
(435) 797-1000

Vermont Master Gardener Program

 UVM Extension Service
University of Vermont
(802) 656-2990

Virginia Master Gardener Program

 Virginia Co-Op Extension
Virginia Tech
(540) 231-9347

Washington Master Gardener Program

 WSU Cooperative Extension
Washington State University
(509) 667-6540

West Virginia Master Gardener Program

 WVU Extension Service
West Virginia University
(304) 293-5691

Wisconsin Master Gardener Program

 Division of Extension
University of Wisconsin - Madison
(608) 263-5110

Wyoming Master Gardener Program

 Cooperative Extension Service
University of Wyoming
(307) 766-1121