This is an Organic Bridge Product that assists with developing roots and nutrients, keeping your lawn green, and is the first step to control crabgrass. We recommend doing split applications for desired control while also feeding the plant to keep it healthy and the lawn green. When you mix an effective herbicide with an organic fertilizer you not only get rid of unsightly crabgrass, but you keep soils and your lawn healthy, naturally. Apply early spring before crabgrass germinates for best results.