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Hibiscus Plants

Q.White Powder on Hibiscus Branches

Anonymous added on July 12, 2011 | Answered

Have a Hibiscus plant outside that has been great and producing good orange flowers until recently. Fertilize it monthly with Miracle Grow. Noticed a white power substance on flowers and branches. Flowers are small. Blasted off white power with hose. Flowers look better but white powder re-occurs. What is white powder? And what should I do?

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Certified GKH Gardening Expert
Answered on July 13, 2011

The white powder you mention sounds like powdery mildew. Neem oil can help with this fungal issue. Here are some articles that you may find helpful: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

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