Tag Archives: pre-emergent


OHP set to launch Fortress herbicide

OHP is pleased to announce we have received federal registration for Fortress┬« Ornamental Herbicide, a pre-emergent granular product that provides outstanding control of broadleaf and grassy weeds on woody plants, perennials, and grasses. Fortress will be available through authorized OHP distributors in early October. A unique combination of isoxaben and dithiopyr, Fortress is manufactured using  Continue Reading »



OHP introduces granular Marengo herbicide

OHP, Inc. has followed up its successful launch of Marengo┬« liquid pre-emergent herbicide with the introduction of Marengo G, a granular formulation with the same effective active ingredient, indaziflam. Marengo G offers production ornamental growers many of the same features as Marengo SC including consistent plant safety, broad-spectrum weed control, and long-term residual. The Marengo  Continue Reading »