Home » Essential Nutrients » Fertilizers » Phosgard Series » Plant Products » Phosgard® Zn 0-35*-0 Phosgard® Zn 0-35*-0 Phosgard® contains plant nutrients designed for foliar and/or soil application. This is only available in California. Phosgard® Zn 0-35*-0 Informational Flyer