Grasso Vineyard

Sustainable viticulture is followed and there is great care for the environment. Pest management is followed with the support of the Napa Valley Agriculture Commission. The European Grape Vine Moth has been controlled through “sexual confusion”. This technique consists in placing strips emanating insect sex attractant pheromones in the vineyard. These pheromones mask the female insect’s own attractant so that the sexes fail to get together. Owl and bird nest boxes are also placed throughout the vineyard to help in natural pest control.

The Grasso estate vineyard utilizes a GDC quadrilateral trellis system with the row direction planted north/south to take advantage of east/west sun. The vines are planted on 1103P, clone 7 on the slopes and 5C, clone 7 in the flat areas. Canopy management is constantly worked throughout the growing season.

Harvest generally occurs in early to mid October. During harvest the grape clusters are picked by hand and carried to 4 x 4 bins for transport to the winery. Total yield in the vineyard is limited to 2-3 tons per acre to ensure a superior Cabernet Sauvignon.