Q.Hibiscus
what causes the Hibiscus plantbuds to get a dirty looking sand like substance to cover them? I can get some of it off by rubbing it but it does return.
DLarum
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on May 2, 2017
This could be scale, mealy bugs, a fungus or a combination of those things. Either way I'd treat the plant with neem oil. This article may help:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-sticky-leaves.htm
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