The philosophy of grape growing is to respect the equilibrium within Quinta do Crasto prized terroir. Perfect harmony exists between the vineyards and the breathtaking beauty of the landscape of Quinta do Crasto and the Douro River, all of which fully encompasses the richness of the native flora and fauna. This is our vision for guaranteeing the equilibrium of our ecological heritage. Our grape growing techniques are strongly ecologically based without the use of any products or substances that are not certified by national and international regulatory entities. This ensures a full respect the environment, roots and vines within a landscape in positive evolution. Crasto respect old, centenary vines and take care to preserve their identity. Crasto prioritise the modernization of grape production that enables them to safeguard the natural vegetation that provides refuge for the local fauna and protects the landscape and soils. Above all, this working philosophy is a highly important means for them to contribute to the preservation of the biodiversity in the Douro River Valley.