Our Dirt
Our soils, part of the ancient “Ellensburg Formation,” are a mix of sandstone, siltstone, mudstone, river rocks, and conglomerates - distinct from the younger basalt-based soils shaped by the Missoula Floods.
The Ellensburg Formation, dating to the Miocene (10–15 million years ago), reflects a geological story of tectonic compression and folding of sedimentary deposits derived from eroded Cascade Range volcanic material. The resulting gravelly, silty loam and stone matrix of this soft bedrock is distinctive to Dineen Vineyards and neighboring vineyards in the Rattlesnake Hills AVA.
Creating Complexity in the wines
Our dirt contains calcium carbonate (Caliche) that enhances the richness of the soil and helps maintain acidity in the fruit late into the growing season. The diverse soils are generally well-drained, shallow and low in vigor allowing the vines to grow in balance while also creating complexity in the wines.
Sitting at 1,200 ft—higher than most vineyards in the state—this site gets ample sun for ripeness and cool nights that preserve freshness and build flavor.