drying of hibiscus flower buds

I have some 7-8 hibiscus plants in pots. For the last one year, the buds of these plants, after being there for some time, suddenly become yellow and then dry and drop off. I tried many insecticides and other sprays but without any success. Please advise.

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1 Comment To "drying of hibiscus flower buds"

#1 Comment By Downtoearthdigs On 06/29/2015 @ 12:56 am

It sounds like it may have thrips. This article will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm ^[1]

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