Q.Hibiscus
Leaves are being eaten on hibiscus. Also, some cottony looking web on some leaves. What is a good all-purpose spray for hibiscus?
Downtoearthdigs
Answered on September 8, 2015
It sounds like you have either mealybugs or possibly scales, which are closely related to mealybugs. The insect forms a cottony mass on the lower sides of branches. These are usually controlled with horticultural oil sprays. Neem oil is also effective. Here is more iinformation: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm
https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm
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