Rhododendron: Aphids Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Aphid damage on rhododendron Photo by: A.L. Antonelli Biology Aphids cause twisting, curling, or puckering of new growth by their feeding. Whitish cast skins and green live aphids may be visible on the undersides of leaves. Honeydew, a shiny, sticky substance excreted […]
Rhododendron: Azalea bark scale Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Azalea bark scale and sooty mold Photo by: A.L. Antonelli Biology The azalea bark scale is a soft scale resembling mealybugs. Red females cover themselves and their eggs with a white, waxy protective coating. Cottony masses of the scales are […]
Rhododendron: Caterpillars Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:19 Looper crawling on edge of rhododendron leaf Photo by: S.J. Collman Biology Several caterpillar pests occur on rhododendrons, most notably cutworms, loopers, and the obliquebanded leafroller. Cutworms and loopers (various species) feed on leaf tissue, removing large, irregularly-shaped pieces. They are night-feeders […]
Rhododendron: Lecanium scale Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Lecanium scales on twig Photo by: R.S. Byther Biology Lecanium scale adults are found on the twigs in late spring. At this stage they are usually brown or mottled brown and white bumps on the stems. During the summer and fall, […]
Rhododendron: Rhododendron lace bug Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Rhododendron lacebug symptoms on leaves Photo by: C.R. Foss Biology The rhododendron lace bug causes stippling on the upper surface of the leaves, and deposits crusty or tar-like excrement on the lower surface. Adult insects are whitish-tan and approximately 1/8″ […]
Rhododendron: Rhododendron whitefly Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Rhododendron whitefly damage Photo by: A.L. Antonelli Biology Whiteflies are small white insects that hold their wings rooflike over their abdomens rather than flat like true flies. Infested leaves, usually the tender young leaves at the branch tips, are mottled yellow […]
Rhododendron: Root weevils Categories: Ornamentals Rhododendron Rhododendron Insects Shrubs Last review date: 2026-08-29 08:37 Root weevil damage on rhododendron leaves Photo by: A.L. Antonelli Biology Several species of weevils feed on rhododendrons. Characteristic damage includes notching of leaf edges by adults and minor to severe root and bark damage by larvae. Occasionally the larvae girdle […]