How does gardenia prevent leaf spot disease?

What harm does the leaf spot disease of gardenia have? How to prevent and cure gardenia mosaic spot? Also ask netizens to help introduce the harm and control methods of gardenia mosaic spot disease in the farming network, and give the following examples for netizens' reference. Harm of gardenia leaf spot: gardenia leaf spot mainly occurs on the leaves, the pathogen invades from the leaf tip or leaf edge, the lower stems and leaves occur first, and the susceptible leaves appear round or nearly round spots at the initial stage, light brown, brown margin, sparse rims and 5mm-15mm in diameter. If the leaf edge is irregular, brown or central gray-white, the edge is brown, there are concentric wheel lines, several disease spots heal to form irregular large spots, so that the leaves withered; in the later stage, many small black spots are buried under the epidermis. Big-leaf gardenia is more susceptible to disease than small-leaf gardenia. The pathogen overwinters on diseased leaves or diseased leaves, and produces conidia in the next spring, which spreads with wind and rain. It is easy to get sick under the conditions of over-dense planting, poor ventilation and light transmission, improper watering in pot planting, and poor growth. Prevention and control of Gardenia mosaic leaf spot: methods 1. Cut off the seriously diseased leaves in autumn and winter, clean the fallen leaves, and destroy them centrally in order to reduce the source of infection. Method 2, planting should not be too dense, properly pruned, in order to facilitate ventilation, light transmission; watering as far as possible not to wet leaves, preferably in the morning on a sunny day. Method 3. Spray 70% methyl topiramate wettable powder 1000 times, or 25% carbendazim wettable powder 250ml 300 times, or 75% chlorothalonil wettable powder 700ml 800 times. Spray once every 10 days. When the disease is serious, it can be sprayed to control the spread and spread of the disease by spraying 65% zinc 600 / 800 times, or 50% carbendazim 1000 times. Click to get more gardenia planting techniques click to get more flower planting techniques