The Q&A Archives: fungus

Question: have noticed a white fungus growing on our gardenias which are planted in pots. they are not doing great and we have tried spraying them with a sulphur solution bought from the local nursery which was suggested by them but they seem to be getting worse with the fungus

Answer: Michael,

The only foliage disease of gardenia that fits that description is powdery mildew. There are a number of products that will control it including products containing neem oil, potassium bicarbonate, bayleton, and funginex.

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