Sequum is located in the St Helena AVA. Founder Paul Skinner also owns a company named Terra Spase which makes recommendations of which grapes to plant based on the soil characteristics of a vineyard. Terra Spase has done work for many elite wineries including Harlan Estate, Kistler, Sloan, and Bryant Family.
Skinner brings this expertise to his own label, producing some outstanding Cabernet Sauvignon and Zinfandel. He uses grapes from Napa Valley and Sonoma County for these wines.
The 2003 Napa Valley Four Soil Melange Cabernet Sauvignon is a study in different soil profiles. The grapes used for this wine are grown in Cortina, Bale, Bressa, and Aiken soil types. Skinner also makes the 2003 Napa Valley Kidd Ranch Zinfandel.