A: It is leaf spot disease. The disease at the initial stage of spraying 25% prochloraz emulsifiable concentrate 500 to 600 times, or 50% more manganese zinc WP 400 to 600 times, once every other week, and even spray three times. After the onset of the camellia, it is strongly advised not to spray water on the plants again, otherwise the pathogens will spread faster and the damage of camellia leaves should be avoided as much as possible to prevent wind damage, sunburn and frostbite.
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