Answer: If you examine the plant carefully you may find aphids or possibly scale insects sucking juices and wounding the plant and causing it to drip. Aphids are small and soft bodied and tend to congregate in the softer new growth at the tips of branches. Scale are rounded and small and may look like flat waxy spots; they cling to stems and foliage, especially the underside. Aphids can sometimes be rinsed off with a strong spray of water from the garden hose and can be controlled with insecticidal soap. Scale can be removed by hand (scrape gently with a finger nail, very painstaking, recheck often as it is hard to find every last one of them) and/or can be treated with ultrafine horticultural oil or insecticidal soap according to the label instructions. Good luck with your hibiscus!
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