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A typical summer day in the Gap begins with a distinctive, crisp coolness and a blanket of morning fog. By late morning the sun chases away the fog and temperatures rise. By mid-afternoon, however, the cooling maritime breezes begin, picking up speed as the afternoon progresses and bringing in fog almost every night. It is this cooling "wind tunnel" effect that distinguishes the Petaluma Gap from our neighboring winegrowing areas. The impact of the wind results in lower yields and grapes that reach physiological ripeness much later and at lower sugar levels while developing intense flavors with ideal levels of acidity.

Farming Practices

The diversity of our wines comes from years of vineyard exploration, a careful understanding of the grapes, and respect for the essence of our fruit. Our sustainably certified vineyard incorporates practices derived from organics and regenerative farming  that we have learned over the years. These practices include bee-keeping, owl and bat boxes, a flock of over 200 sheep that graze and fertilize our land, and careful management of the pond system that ensures our water supply.

La Cruz Vineyard

The ancient seabed of the San Pablo Bay is mineral rich, with clay soils that define this vineyard. Planted to chardonnay, pinot noir, syrah, viognier, and pinot gris, this is the heart of Keller Estate. Typical to this vineyard is a bright acidity and signature spice notes. In 1989, the first Chardonnay vines were planted, and La Cruz Vineyard was born, years ahead of Keller Estate producing wine. 

El Coro Vineyard

Sitting at the ridgetop of the Estate, this vineyard's loam soils are even more exposed to the wind than the La Cruz Vineyard. Planted exclusively to Pinot Noir, this jewel offers extraordinarily complex pinot noirs with delicate aromatics and structured tanins.

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