Saxum Vineyards is a California wine producer in the Willow Creek District of Paso Robles. It is known primarily for its red blends from the key Rhône varieties: Grenache, Syrah and Mourvèdre. The vineyards benefit from the cooling effects of the Templeton Gap and are farmed organically, although Saxum has never sought formal certification.
The winery was founded by Justin Smith who took over managing his father’s vineyards. Smith Snr bought the James Berry Vineyard property and had been growing and selling Chardonnay to Fetzer Vineyards. Towards the end of the 1980s, the Chardonnay was replaced with the Rhône varieties Justin and other Paso Robles producers would go on to favor.