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Welcome to Benton-Franklin County Extension

WSU Extension Benton/Franklin Counties logo

County Programs

Learn From The Experts

Our local programs include agriculture and natural resources, 4-H youth development, gardening and community horticulture, and food safety and preservation. In addition, Washington State University provides a broad range of consumer publications (link), online educational opportunities, and other statewide educational programs and technical assistance from four research and extension centers and 11 colleges.

Report Japanese Beetle to WSDA at

Have you seen this pest?

Japanese beetles (Popillia japonica) are highly invasive pests of more than 300 plants, including roses, grapes, and hops. If Japanese beetle were to establish in Washington, it would pose a serious threat to gardens, parks, and farms. Learn how you can help the WSDA find and eliminate these pests!

News & Events

Become a Master Gardener. Application deadline is November 30th.

Become a Master Gardener in 2024!

Now accepting applications for the 2024 Master Gardener program. The WSU Extension Master Gardener Program is open to adults with an interest in gardening and a willingness to use their knowledge, experience, and enthusiasm to make a positive impact on our local community. You do not need to be an expert gardener to apply, you just need to have a desire to learn and serve your community. Application deadline is November 30, 2023.
Dividing Dahlias class - dahlia tubers and tools shown

2023 Garden Classes & Events

These free events are hosted by local WSU Master Gardener volunteers to educate and inspire our community. Whether you are a seasoned gardener or brand new to the idea of growing, there’s always something to learn or experiences to share to help each other along. We hope you’ll join us!
Free Pressure Gauge Testing. Call 509-735-3551 to schedule your appointment.

Free Pressure Gauge Testing

Call us today (509-735-3551) to get your pressure gauge tested before you start canning this season! The USDA recommends pressure canners with dial gauges be tested annually. Why? Testing the gauge tells you whether your gauge is working properly. An accurate gauge is necessary to make sure your home canned foods are safe.
Master Gardener video brought to you by our community partner, McCurley Subaru.

Benton Franklin Master Gardeners Earn International Award

Our amazing WSU Master Gardeners of Benton & Franklin Counties earned first place in the David Gibby Search for Excellence Award in Youth Programming for their work “Washington Working with Incarcerated Youth: Growing and Giving Back to the Community” Watch the video explaining this exceptional program.
Master Gardener Program 50 Year Anniversary Celebration, 1973 - 2023

50 years of service to our communities

It all began at Washington State University A grassroots, sociologic movement that started at Washington State University in 1973 and was emulated across the United States and into Canada and South Korea, the Master Gardener Program is WSU Extension’s flagship volunteer program. Learn more about the history of the WSU Extension Master Gardener Program.


We have Regional Extension Specialists and staff in three locations throughout Benton and Franklin counties.

Benton County

7102 W. Okanogan Place, Suite 102
Kennewick, WA 99336
(509) 735-3551
Open Monday – Friday
8:00am – 4:00pm

Specializing in:

  • Gardening & Master Gardeners
  • Food Preservation & Master Food Preservers
  • Animal Science

Benton County

620 Market Street
Prosser, WA 99350-1320
(509) 786-5609
Open Tuesday – Thursday
8:30am – 4:30pm

Specializing in:

  • Commercial Tree Fruit
  • Sprayer Technology
  • Grapes
  • Small Fruit

Franklin County

404 W. Clark
Pasco, WA 99301
(509) 545-3511
Open Monday – Friday
8:30am – 5:00pm

Specializing in:

  • 4-H
  • Family
  • Forage
  • Commercial Vegetables

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