for specific grass types and regions. Vigoro fertilizers feature timed-release nitrogen that provides and even, consistent feeding that adjusts to your soil temperature to provide just the right amount of nutrients at just the right time. In addition Vigoro manufactures granular insect control and weed control products as well as weed stopping mulch and seed starting mulch. Vigoro can be found only at The Home Depot throughout the U.S.A. Vigoro is for everything you grow.