White Powder on Hibiscus Branches

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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1 Comment To "White Powder on Hibiscus Branches"

#1 Comment By Nikki On 07/13/2011 @ 9:28 am

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 ^[1]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[2]

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[1] https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm

[2] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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