Dr. Iron Soil Acidifier.NeosKon Dr. Iron is designed to help correct iron deficiency in pale or yellowing plants. Made up of 22% iron and 55% sulfur, it is one of the most natural iron products on the market today. Use this product on lawns, flowers, ground-covers, vegetables, shrubs, and more. It will not stain or burn as some other iron products do. About NeosKon: NeosKon Lawn and Garden Products is a leading distributor of plant protection chemicals and fertilizers. We strive to offer home gardeners the same professional-grade technology available to the agricultural industry. Our growing line of products provide economical and effective solutions to yard and garden problems and are properly registered and labeled to be sold to and used by the home gardener.