Check the underside of the leaves for tiny green worms. You have to look close because they almost blend in. If this is the case, then I'm trying to find out what they are & what can be used to get rid of them aside from squashing them. I'm hoping someone can tell me of a home remedy spray that will work. I'll keep you posted...

I replied to your post in the Garden Clinic forum. I think you may have hibiscus sawfly larvae.

Tina McG