Dynamic white wines from Washington State

An introduction to Washington

Our old-world connection

Washington is located at nearly the same latitude as some of the top French and Italian wine-growing regions. Vines have thrived here for nearly 150 years. Thanks to the long sunny days and cool nights, Washington's diurnal shift creates ideal temperatures for growing grapes.

A dynamic state

Jaine grapes are selected from sustainably grown vineyards in Washington State, a wine region unlike any other in the world. Here, miles of vines stretch across 19 diverse AVAs to produce a broad range of thriving white wine and rosé varietals.

Grown in the Columbia Valley

The Columbia Valley is home to 50,000 acres of vines within 19 distinct AVAs. Contrary to the reputation of the Pacific Northwest, the valley only gets six inches of rainfall a year—as much as the Gobi desert. Our long and consistent growing season produces complex, yet vibrant wines of world-class varietals ranging from Chardonnay to Sauvignon Blanc.

The Jaine vineyards

Jaine focuses on single vineyards across the Columbia Valley. Vines grown in Ancient Lakes, Royal Slope, White Bluffs, and Wahluke Slope AVAs are deeply vibrant and expressive in nature.

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Singular expressions

Each Jaine wine tells a story of the vineyard and varietal.

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Who We Are

(Top) Reagan Mercer, Rob Mercer, (Bottom) Rylee Mercer, Brenda Mercer, Thomas Mercer

Owners, The Mercer Family

The Mercer family is a fifth-generation agricultural family whose roots in Washington’s Horse Heaven Hills date back to 1886, when they first settled the land as sheep ranchers. Over the decades, they evolved alongside the region, transitioning from sheep to cattle, then expanding into row crops and large-scale farming, while maintaining a deep commitment to stewardship of the land. Their legacy is defined by resilience, innovation, and an enduring connection to the high-desert landscape they have farmed for well over a century.

In 1972, the Mercer family helped pioneer the Washington wine industry by planting the first wine grapes in the Horse Heaven Hills, recognizing the region’s unique potential for world-class viticulture. Today, they continue to farm thousands of acres along the Columbia River, growing premium wine grapes alongside a diverse range of crops. Their work bridges tradition and progress, combining generations of ranching knowledge with modern farming practices to produce wines that reflect both the character of the land and the legacy of a family deeply rooted in it.

The Mercer family acquired Matthews Winery in 2026. Having grown fruit for Matthews and its sister brands for years, the partnership was deep rooted in shared vineyard and winemaking philosophies. Their vision for Matthews is simple: protect what makes it great while elevating it through deeper vineyard integration. They are passionate about preserving the brand’s identity, while using their generational farming expertise to enhance quality and strengthen its role as a leading, vineyard-driven Washington winery.