Contact a Master Gardener

Master GardenerThe Master Gardener™ program is a volunteer organization that assists the Oregon State University Extension Service. They provide free, relevant, research-based education and outreach to the public about gardening and household pests. This information promotes sustainable practices that minimize risks to human health and the environment.


Clackamas County
Phone: 503–655–8631
Address: 200 Warner–Milne Rd. Oregon City, OR 97045
Hours: 9 AM – 12 Noon and 1 PM – 4 PM, Monday – Friday

Multnomah County
Phone: 503–445–4608
Address: 2701 NW Vaughn St. Suite 450 Portland, OR 97210
Hours: 10 AM – 2 PM, Monday – Friday

Washington County
Phone: 503–821–1150
Address: Public Services Building, 155 N. First Avenue, Suite #200,
Hillsboro, OR 97124-3072
Hours: 9AM –12PM and 1PM – 4PM, Monday – Friday

Questions can also be submitted online at

To contact your local Oregon Masters Gardener outside the Portland area, visit: