Westland Rose Guard can be used all year around on roses and ornamental plants as a defence from bugs and diseases. It works by physical action to give safe and effective control of a wide range of pests such as greenfly, blackfly, powdery mildew, spider mite, and more. Made with natural ingredients, the formulation is bee friendly and pests will not develop resistance to the product. It controls whitefly, greenfly, powdery mildew, and other pests. It is also an instant foliar nutrition that improves leaf health and colour. The product is available in a size of 800ml.