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Why is my Strelitzia (Bird of Paradise) covered in a sticky substance?

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A sticky substance on the leaves of a Strelitzia is a sign of a pest infestation. Common pests that may attack Strelitzia include spider mites, mealybugs, and scale insects. These pests feed on the plant's sap and excrete a sugary substance called honeydew. The honeydew attracts ants and can lead to the growth of sooty mold on the plant.

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