Hibiscus leaves are all with holes in them
How can I protect my hibiscus plants ? The leaves are all full of holes like something is eating them.
Hibiscus is one of the plants that Japanese beetles prefer. These are shiny, part green beetles that are active for several weeks at this time of year. You can catch them with a hand-held vacuum and dump the contents into a pail of soapy water. Or you can go into the garden twice daily and sweep the beetles into a soapy water pail. If the infestation is really bad, get out there 3 times a day until they are under better control. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/insects/japanese-beetles.htm
If these beetles are an annual problem, think about treating the lawn for grubs at the appropriate time in spring. Grubs are the larvae of beetles. https://www.gardeningknowhow.com/plant-problems/pests/insects/get-rid-of-grub-worms.htm
If you don't think Japanese beetles are your problem, please catch a picture of the insect and create a new post here.