Ornamec Over-The-Top Grass Herbicide provides outstanding post-emergent control of unwanted grasses in groundcovers, shrubs, and trees. Mixed with Aqua-Zorb CA Nonionic Surfactant, Ornamec Over-The-Top is ideal for any areas where control of unwanted grasses is desired, including in and around newly emerging ornamentals and transplants, as well as in established plantings. The label lists more than 400 species and varieties of plants that may be treated with over-the-top applications without risk of plant injury, plus 200 additional species listed according to the risk of plant injury. Ornamec Over-The-Top stops grass growth within 48 hours, death occurs within 1 to 3 weeks.