Rethinking Phosphorus Maximizing Crop Performance Protecting Natural Resources
Who Is Ostara?
Ostara is passionate about protecting waterways to ensure healthy, sustainable communities across the globe.
Fertilizers
Ostara’s Crystal Green sustainable fertilizer deliver phosphorus, magnesium and nitrogen in a highly efficient granule with season-long availability to maximize yield with potential for reduced application rates.
Sustainability
Ostara provides products and technology for a more sustainable future. With high-efficiency fertilizers and phosphorus management solutions, less phosphorus is released into the environment.
Feeding Crops Today.
Protecting Resources for Tomorrow.
Proudly Produced in the USA
Crystal Green fertilizers are proudly manufactured in the United States. Our facility in St. Louis gives us the ability to easily ship products across North America to growers wanting the most efficient phosphate fertilizer available.