GROWER • PACKER • EXPORTER of PREMIUM CHANDLER WALNUTS FROM ARGENTINA Rivera Grande - Patagonia Walnut is a family-owned, fully integrated producer of premium in-shell Chandler walnuts from Argentina’s Río Negro Valley in Patagonia. From orchard to export, the company ensures complete quality control, delivering sustainably grown walnuts distinguished by purity, flavor, and consistency to international markets across Europe, the Middle East, and Asia.