Growing Success Rose Guard offers a pesticide free alternative to bug and disease control for both roses as well as ornamental plants. It works by physical action to give safe and effective control of a wide range of pests such as Greenly, Blackfly, Powdery Mildew, Spider Mite and more that. Made with natural ingredients, the formulation is bee friendly and pest will not develop resistance to the product. Controls Whitefly, Greenfly, Powdery mildew and other pests Pesticide-free Works by physical action Bee friendly Improves foliage health