About Us

Leaf divider of wine grapes for sale

Diamondback Ridge Vineyard is a producer of premium wine grapes located on a south facing slope along the Rattlesnake Hills AVA.

Our quality vineyard is on the outer edge of developed farmland and so is bordered by natural vegetation to the North. Carved out of sagebrush, the vineyard sits on virgin ground that had never before been developed. The soil is characterized by broken basalt and silt loam. With an upper elevation of 1410 feet, the southern slope provides warmth and excellent air drainage which produces premium wine grapes.

Characterized by multiple fingers, the hillside provides both gentle eastern and western inclinations that allow varietals to be planted for their unique needs of morning or afternoon sun.

When developing the site, careful attention was paid to row alignment. Some rows were planted with a north-south orientation based on the old industry standard. Others were planted 22 degrees from true north, which is a current industry innovation.  This attention to detail allows us to offer some of the highest quality wine grapes for sale in Washington state.

Six different clones of Cabernet Sauvignon
were planted on the site.

This allows us to offer for sale premium quality wine grapes to winemakers interested in exploring the clonal differences in each. Clones 4, 6, 7, 8, 15 and 33 are all found on this same hillside. Clones 7, 8 and 33 are planted on the upper, most sun exposed section at 22 degrees from true North. Clones 6 and 15 are planted with a true north attitude, while Clone 4 enjoys some afternoon shade.


Steve Bosma

Owner, Viticulturist
Owner of premium wine grapes vineyard

Julie Bosma

Owner, Operations Manager