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. (https://extension.oregonstate.edu/mg/local-osu-master-gardener-programs)
For questions about Master Gardener Online (http://ecampus.oregonstate.edu/workforce/master-gardener-online/), email Professional and Continuing Education (mailto:[email protected]) or call 541-737-4197.