Benton & Franklin Counties

Extending Knowledge.  Changing Lives.

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.

County Programs

Contact Us

We are a bi-county Extension with three offices to serve you.  Our programs/specialists are split between these three offices but serve both counties in their specific topic.

Benton County – Kennewick
(Gardening, Horticulture, Food Preservation, Animal Science)       
7102 W. Okanogan Place, Suite 102  <— NEW ADDRESS!
Kennewick, WA 99336
(509) 735-3551 | Email us
Hours: Monday – Friday | 8:00am – 4:00pm
**Our Kennewick office has moved to the Benton Franklin Health District building.**



Benton County – Prosser   <— OFFICE IS BACK OPEN!
(Commerical Tree Fruit, Grapes and Small Fruit)

1121 Dudley Ave
Prosser, WA 99350-1320
(509) 786-5609 | Email us
Hours: Monday – Thursday | 9am – 3:00pm


Franklin County
(4-H, Family, Forage and Commercial Vegetables) 

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

Popular Resources

Plant Samples & Soil/Water TestingGarden Fact SheetsFood Preservation


Fri 05

Spring Plant Sale

May 5 @ 12:00 pm - 6:00 pm
Sat 06

Spring Plant Sale

May 6 @ 9:00 am - 2:00 pm
Thu 11
Sat 20

Hypertufa Planter Class

May 20 @ 10:00 am - 12:00 pm
Thu 08
Thu 13
Thu 10

Loving Plants Class – Garden Education Series

August 10 @ 6:30 pm - 7:30 pm
Thu 12

Choosing Trees Class – Garden Education Series

October 12 @ 6:30 pm - 7:30 pm

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.