100% natural organic fertilizer, OMRI listed, contains no synthetic ingregients. Offers the most natual source of essential nurtients to promote vigorous plant growth, bountiful yields and brilliant flowering. Used as directed, will not impact or harm ground water or other sensitive ecosystems. In fact, regualr use will not only bulid up and enrich soil but also benefit the plant and soil biosphere. Gradual and steady release. Great for lawns, garden vegetables and flowers and shrubs.