About The Garden Magazine Your local gardening advice for Australian gardens | How to Grow | Garden Advice | Pest & Diseases | Recipes 
The worst pest of the hibiscus is the hibiscus flower beetle, which feeds on the unopened and developing flower bud. Healthy plants will detect the hibiscus beetle and drop the damaged flower buds, so if you notice flowers falling prematurely it can usually be taken as a sign of the beetle’s presence. Control hibiscus beetle and aphids on hibiscus with Searles Conguard spray.
