Chateau Siaurac has a long family history in the region, dated all the way back to 1832 for the Guichard family. The large, 36.5 hectare Chateau Siaurac vineyard is planted to 75% Merlot, 20% Cabernet Franc and 5% Malbec. The terroir is gravel and clay soils that comes from 2 adjoining parcels. Although the parcels are contiguous, they each have different terroirs. The vineyard of Chateau Siaurac is planted to a high, vine density of 7,100 vines per hectare. Since 2008, the vineyard has practiced only sustainable farming management. Starting with the 2016 vintage, the estate moved to using only 100% organic and biodynamic farming techniques.