Control scale insects on Plumeria by using horticultural oils or insecticidal soaps, applying them directly to the pests. These products suffocate and kill scale insects. For severe infestations, use systemic insecticides labeled for scale control. Regularly inspect the plant for signs of scale insects, such as small bumps on stems and leaves, and treat promptly […]

Scale insects appear as small, round, or oval bumps on stems and leaves. They suck sap from the plant, leading to yellowing, wilting, and sooty mold growth on honeydew excretions.