The Ocean Leaves Wild Organic Seaweed 1.5kg is made of 100% hand harvested dried wild seaweed and improves your plants health and quality. It contains micro and macronutrients and multi marine minerals including nitrogen, magnesium and calcium which increases resistance to some pests such as red spider mite & aphids. It improves soil structure and its moisture holding capacity, sweetens fruit, vegetables and grasses and helps fight against plant stresses such as frost and drought. This seaweed is organically certified and guaranteed Irish.