The mailing address for the Oregon State University Master Gardener Program is:

Oregon State University Master Gardener Program

Department of Horticulture

4017 Ag. and Life Sciences Bldg.

Corvallis, Oregon 97331-7304

For questions about the Master Gardener Program within your county, please contact your local Extension Office.

For questions about Master Gardener Online, fill out the Information Request Form on the Extended Campus website, or contact Professional and Continuing Education at 541-737-4197 or email: learn@oregonstate.edu.