River Rock Vineyard was planted in 2001 on their own roots to various varieties, including Cabernet Sauvignon, Syrah (Phelps/ Tablas Creek Clones), Viognier, Chardonnay, Rousanne, Grenache, Mouvedre, Merlot, Petit Verdot, Malbec, Cinsault and has produced the fruit from which many an acclaimed wine has been made. While older vines are planted on their own roots, more recent plantings are on various rootstocks.