Crystal Green from Ostara Nutrient Recovery Technologies, is the only slow-release fertilizer with a combination of nitrogen, phosphorus and magnesium (5-28-0 +10% Mg). Crystal Green is harvested from wastewater, a process which makes it a sustainable and renewable source of phosphorous. The Crystal Green slow release fertilizer prill takes 8-9 months to dissolve, simultaneously releasing each of its elements. Because it is is a pure, hard crystal prill that slowly breaks down, there is no phosphorus run-off into adjacent waterways or crop burn. All the nutrients remain in the soil (reducing phosphorus applications by 75 percent), which is better for the environment, resulting in improved plant and turf performance, greener plants, and significant cost and time savings.