About Us

Zerba Cellars is an Oregon winery located in the heart of the Walla Walla Valley. We produce approachable, food friendly wines that showcase the fruit without compromising the wine’s structure and overall balance. We have three estate vineyards in the Walla Walla Valley. Each was planted to take advantage of the Walla Walla Valley’s unique soil types and elevations. Our Jon Cockburn Ranch Vineyard is located in the Southeast corner of the valley, in the foothills of the Blue Mountains. Dad’s Vineyard is located in the “Touchet Beds”, near the state line. Winesap Road Vineyard is located in the rocky floodplain of the Walla Walla River.

Cecil & Marilyn Zerba


Cecil and Marilyn Zerba the Founder of Zerba Wine Cellars

Cecil Zerba was born and raised in the Walla Walla Valley. The Zerba family’s roots in the Walla Walla Valley can be traced back to the 1850’s. Marilyn was born in Redmond, Oregon and moved to the Walla Walla Valley when she was nine years old. Cecil and Marilyn were married in September, 1981. At the time, Cecil was an electrician and Marilyn was a registered nurse. Soon after they were married, Cecil and Marilyn established Zerba Gardens, a local nursery producing quality plants and produce. “We started the nursery to keep the boys busy in the summer”, says Cecil. Over the next 20 years, Zerba Gardens grew into one of the valley’s most successful and trusted local nurseries. In 2001, Cecil and Marilyn Zerba left the nursery business and founded Winesap Vineyards.


Walla Walla Valley land which is home to Zerba Wine Callers vineyards
Vineyard row at Zerba Wine Cellars

The Begining

The Walla Walla Valley lies within the Columbia Plateau. Fifteen million years ago, this area was inundated by giant volcanic eruptions, creating the largest lava flows on earth. The lava from this period hardened into the iron-rich basalt that forms the bedrock for the whole region. Throughout the Columbia Plateau, however, the top-soils are non-native, deposited across the region by ancient floods, volcanic eruptions and wind.

The Ice Age

During the last ice age, a lobe of glacial ice from the Cordilleran ice sheet advanced south into the Idaho panhandle and blocked the Clark Fork River. This lead to a series of incredible glacial floods known as The Missoula Floods. First, the Clark Fork flooded the valleys of Idaho and western Montana as far north as Canada. Known as Lake Missoula,this body of water was 2,000 ft. deep in places and as large as Lake Ontario and Lake Erie combined. There are two theories regarding what happened next. The water either rose until it was deep enough to float the ice-damn or until it accumulated enough force to weaken and eventually breach it. Either way, the ice failed, and a 500-foot wall of water, ice and debris swept across eastern Oregon and Washington. When the water reached the Wallula Gap in the Columbia River Gorge, it backed-up and flooded the Walla Walla, Yakima, Snake and Columbia river valleys, reaching depths of 1000 feet in places. Eventually the flood made its way through the Columbia River Gorge, floodinig the Willamette Valley as far south as Eugene, before continuing west to the Pacific Ocean. Amazingly, as the glacial ice continued south, it sealed off the Clark Fork again. Experts believe this cycle was repeated 80 to 100 times and that it took 50 to 75 years to complete. 

Our Floods

The Missoula Floods had a tremendous impact on the Walla Walla Valley. As each flood engulfed the valley, reaching elevations as high as 1,200 ft., the receding water left behind a layer of sediment and debris. These layers are known as the Touchet Beds. Sediment from at least thirty floods reaches depths of 100 feet in the Touchet Beds. The beds are rich in minerals such as quartz and mica that are not found in the underlying basalt. In addition to forming the Walla Walla Valley’s basalt bedrock, Cascade volcanoes such as Mount Mazama and Mount St. Helens erupted repeatedly during the last ice age, covering the valley with fine layers of ash.

Our Winds

Wind also had a great impact on the Walla Walla Valley during this time. Strong southwest winds lifted the finest particles of silt and sand from the Touchet Beds and piled it into mounds. This fine, wind-blown soil is known as loess, and it covers much of the valley. The Walla Walla River, Mill Creek and other major streams in the Blue Mountains participated in the process, too. During the last ice age, these streams had much greater flows than today, and floods from this era left behind large deposits of basalt river-rock. These rocky floodplains can be found in and around Walla Walla and Milton-Freewater.


“Five Stars!”


We use a combination of new, 2nd and 3rd year American oak barrels. Sizes range from 225 liter to 265 liter barrels. We use predominantly medium plus toast with the occasional toasted head barrel. American oak is supplied and crafted by the French cooperage Nadalie out of their Napa, CA location. We source our American Oak from Minnesota, Missouri, Pennsylvania, and Virginia.

Crush, Fermentation, Aging

Our red wines are destemmed, crushed and then punched down twice daily in 1.5 ton open top fermentors until dryness. They are then pressed in a bladder press with a gentle hand to avoid overextraction. Our white wines are gently pressed as whole clusters before fermentation. We ferment and age our whites in mostly neutral American barrels for approximately eight months. Our red wines age for an average of 18 months with our Reserve Reds pushing closer to 24 months in barrel.

Wine barrels in a a row at Zerba Wine Cellars in Walla Walla Valley Milton-Freewater, Oregon

Get IN touch



85530 Highway 11
Milton-Freewater, OR 97862

Visit Us

We are located in the beautiful and sunny Walla Walla Valley

Milton-Freewater Hours

Daily: 10am - 5pm

Office hours: Monday - Friday 10am - 5pm
Closed Thanksgiving, Christmas day, New Year day & Easter

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