April 22, 2014. The Earth Day. What this special day means for Vigne dei Mastri ? 12 years ago we tried to open a new way to environment care for Piedmont wineries …. CO2 free, no pesticides, sustainable energy production, water recycling: the Vigne dei Mastri fight for a clean environment continues! We invite you to join us in building a clean, healthy, diverse world for generations to come.