If you stand in the middle of the Matchbook vineyard and wonder why we decided to plant grapes on the tops of these Dunnigan Hills, look down. The answer is underfoot. The rocks and red gravel are why we are here. Rocks don’t hold water, they provide no nutrients, this is heaven to a grape farmer. Vines need a little stress to produce flavorful grapes, and well-drained, rocky soils restrict vegetation and force vines to search deep for all-essential water and nourishment. This stress naturally reduces bunch and berry size, controls canopy development and builds strong roots.