buds dropping off

Question

My hibiscus has yellow leaves and the buds drop off before they bloom. I believe I read that there is an insect that causes this. What should I use to kill that pest?

Answer 1

It could be a number of insects, but thrips or gall midge are most common pests that affect the buds. These articles may help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm