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Welcome to Benton-Franklin County Extension

Washington State University Extension of Benton and Franklin Counties connects area residents to the research and knowledge bases of the state’s land grant research university, providing solutions to local problems and stimulating local economies. Our county-based educators work with partners in your communities to provide educational programs and leverage the broad resources of a major university to resolve issues and create a positive future for the residents of Benton and Franklin Counties.

Learn From The Experts

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

News & Events

People enjoying gardening. Become a Master Gardener. Application deadline is November 30th.

Learn how you can become a Master Gardener

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. Learn more about the Master Gardener program and how to apply here Application deadline is November 30, 2022

Walk n' Talk: Trees in the Demo Garden - 2022 Garden Education Series Class

Let’s talk trees! Take a walk with WSU Master Gardener volunteers through the Demonstration Garden while we discuss the where and why of the trees planted throughout the garden. Saturday, October 8th at 10:00 am Waterfall Classroom at the Demonstration Garden,1620 S. Union, Kennewick, WA
Free Pressure Gauge Testing. Call 509-735-3551 to schedule your appointment.

FREE pressure canner gauge testing available

It's time to test your pressure gauges! The USDA recommends having pressure canner gauges tested annually. Testing your pressure canner will determine whether it is functioning properly and will help you produce safely preserved food. Call 509-735-3551 to schedule your appointment.
Report Japanese Beetle sightings to WSDA

They're here

The presence of Japanese Beetles has now been confirmed in the Richland, Grandview, Sunnyside and Wapato areas. Report any sightings of these destructive pests to the Washington State Department of Agriculture on their website at or by emailing
Report Asian Giant Hornet sightings to WSDA

Be on the lookout

Washington State Department of Agriculture (WSDA) needs the public to be on the lookout for possible Northern Giant Hornets (NGH) in Washington State. Learn more about NGH and report sightings on the WSDA website You can also email or call 1-800-443-6684.
Let us help! Contact our Master Gardeners with all of your gardening questions

We're here to help

Our Master Gardeners are here to help with your garden and landscape questions/problems. Call us or stop by with your sample. We will have a Master Gardener contact you as soon as they can. Tuesday – Thursday 9am-4pm (closed for lunch 12pm-1pm) (509) 736-2726 7102 W. Okanogan Place, Suite 102, Kennewick, WA 99336

County Programs


Benton County – Kennewick
(Gardening, Horticulture, Food Preservation, Animal Science)       
7102 W. Okanogan Place, Suite 102
Kennewick, WA 99336
(509) 735-3551
Hours: Monday – Friday | 8:00am – 4:00pm
Benton County – Prosser
(Commerical Tree Fruit, Grapes and Small Fruit)

Benton County Courthouse, 1st Floor
620 Market Street
Prosser, WA 99350-1320
(509) 786-5609
Hours: Tuesday – Thursday | 8:30am – 4:30pm
Franklin County – Pasco
(4-H, Family, Forage and Commercial Vegetables) 

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

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Some WSU Extension web sites provide links to external sites for the convenience of users. These external sites are not managed by WSU Extension. Furthermore, WSU Extension does not review, control or take responsibility for the content of these sites, nor do these sites implicitly or explicitly represent official positions and policies of WSU Extension.  Extension programs and employment are available to all without discrimination.  Evidence of noncompliance may be reported through your local Extension office.  Reasonable accommodations will be made for persons with disabilities and special needs who contact the Benton County WSU Extension Office at 7102 W. Okanogan Pl., Suite 102, Kennewick, WA 99336 or by emailing at least two weeks prior to an event.