PreEmergent Weed Suppressant & Slow Release Fertilizer An organic weed control and fertilizer for lawns and gardens. Completely natural, made from corn gluten and is harmless to people, pets, groundwater, insects and soil microorganisms. Corn gluten contains a natural allelopathic compound which has been proven to inhibit seed germination. Also a slow release fertilizer that is harmless to plants with root systems.
Note: There is no guarantee that this is derived from non-GMO corn.