Hello! I am a Garden Designer who recently came across a Rose of Sharon in a customer's courtyard that has leaf curling and bud disfigurement as well as many brown buds. So, far there have only been a few successful white blooms. Upon further examination we found an "army worm" looking caterpillar inside the bud and one in a flower. The ground under the plant seems fairly moist and she said she's been giving it extra water on top of the regular irrigation. This is normally a drop dead gorgeous Hibiscus that has flowers as big as a hand. I do not know the specific variety. I personally think there are 2 issues going on but we would like some additional input and remedy if there is one.