Group M5 fungicide. Cleary's 3336 EG at 12 to 16 oz/100 gal water. pansy flower meaning in hindi downy mildew is caused by the funeral flowers-like organism Peronospora violate, which produces purple-brown leaf spots, often with encircling yellowing, that has an accompanying grey mold on the leaf underside. 12-hr reentry. Efforts to maximize plant vigor by fertilizing and watering are helpful. Mildew-Plants show white powdery deposits on leaf and stem surfaces. Severe losses can occur on both seedlings and mature plants ready for sale. Cercospora Leaf Spot Pansies and violas may be attacked by various leaf spot diseases that disfigure the plants. They are grown exten-sively in nurseries in the winter and find a ready Disarm 480 SC at 1 to 4 fl oz/100 gal water. Q What plants do pansy leaf spots affect? Apply thiophanate methyl & chlorothalonil (Spectro 90 WDG), chlorothalonil (Daconil Weather Stik), triadimefon (Strike 50WDG) or Bacillus subtilis QST713 (Cease) according to label directions. A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides.These discoloured spots or lesions often have a centre of necrosis or cell death. Cause Several fungal leaf spots have been reported from the Pacific Northwest including Ramularia agrestis, R. lactea, and Cercospora violae. Spirato GHN at 2 to 4 fl oz/100 gal water. One common variety in the U.S. is the eastern redbud (Cercis canadensis), thriving in U.S. Department of Agriculture plant hardiness zones 4b through 9a. Figure 1. Leaf spots are favored by warm, humid conditions especially later in the growing season during fall. Group 7 + 11 fungicide. Pansy. Slugs, snails and glasshouse red spider mite are common insects. As the lesions mature, they may appear sunken or as concentric brown rings, often with a yellow halo. Spots generally are on the lower foliage first. Petioles and stems may also be infected. Grow plants on raised benches to prevent contamination from native soil and start with sanitized pots, flats, and benches. Leaf spots are caused by different fungal spores that attach themselves to the leaves. It sounds as though they are suffering from a strain of fungal leaf spot. The lower affected leaves may turn yellow and drop. Group M1 fungicide. In the advanced stages, the leaf spots develop tan centers with purple borders. Focus on cultural controls. Common Diseased Pansy Symptoms Alternaria Leaf Spot – The first symptoms of alternaria leaf spot include tan or greenish-yellow lesions turning dark brown. 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