Sauvignon Blanc represents 35% of the grape varieties in the Château Guiraud vineyard. This very elegant grape variety is selected from the oldest vines in the property's conservatory. It is replanted and vinified separately, thus contributing to the signature of Château Guiraud, 1er Grand Cru Classé in 1855 in Sauternes. 80% of the soil is made up of sandy gravel, the rest is made up of deeper soils that mix gravel, limestone and heavy clay. The plots offer a heterogeneous soil.