Prosser Wine Country
Prosser wineries are located in the Yakima Valley AVA of Washington wine country. Prosser, WA is located at the east end of Yakima Valley, is home to several dozen, tasting rooms and several annual wine-tasting events. The nearby town of Grandview, WA is also listed as it is so close.
Also check out wineries at the Prosser Vintner's Village.(click OK twice below)