I have three hibiscus plants growing in our garden but for one hibiscus I could see some white color substance on the new leaves and branch. Can anyone please advise on how to get rid of this and save this plant as well as it should not spread to other plants.
It can be mealy bugs. They are hidden in a white coating that may also have a cottony look. They are pretty common in hibiscus. I heard that insecticidal soap is a good control for mealy bugs.Before you apply anything first identify what you have.