The one attribute of scale insects that probably leads ... holly, yew, rhododendron, maples, euonymus, English ivy, mulberry The white fuzzy appearance is from the discarded bodies of the insects after they molt. There are many types of scale insects encountered by gardeners. Crawlers of the second generation are active at 2314 3586 [3010 peak] GDD. The male scales are usually smaller and more slender. Pine needle scale and striped pine scale are particularly damaging. Check plants for live scale infestations. Check yews frequently so action can be taken if it appears a damaging population is developing. Honeydew (a sticky substance produced by the scale insects as they feed) and sooty mold (a black fungus that grows on top of the honeydew, see photo below) are the primary problems caused by this insect. Crawlers hatch through June and remain on the undersides of the leaves through winter. The podocarpus aphid, Neophyllaphis podocarpi Takahashi, is a pest of Podocarpus species in Florida, namely the nonnative ornamental shrub Podocarpus macrophyllus (common names include bigleaf podocarpus, kusamaki, podo, Japanese yew, and southern yew) (Stamps no date). This scale is most obvious from May through June when white egg sacs may be found in twig forks. They lay white cottony ovisacs (egg masses) on the. Scale may create heavy damage to plants as they deplete leaves of their nutrients. Cottony camellia scale is a soft scale that feeds on camellia, holly, yew, euonymus, sweetbox, and maple. 1. We embody the University's land-grant mission with a commitment to eliminate hunger, preserve our natural resources, improve quality of life, and empower the next generation through world-class education. Scurfy Scale (Chionaspis furfura): Small elongate (1/10"), dirty white, pear shaped scales. The hard scale lives and feeds under this spherical armor and does not move about the plant. Mealybugs are common indoor pests. It is not unusual to find light populations of this scale on healthy yew plants. Leaves on affected branches suddenly turn yellow and wilt. Mealybug infestations appear on plants as tiny, soft-bodied insects surrounded by a fuzzy, white mess around the stems and leaf nodes. First found in Florida in Miami in 1968, this invasive aphid can now be found anywhere in Florida where the genus Podocarpus is grown (Brown an… Powdery mildew is a common disease that appears as a white powdery substance on a tree leaf surface. These pests all have needlelike "piercing-sucking" mouthparts that allow them to puncture plant tissue and remove sap or cell contents. Because these weevils "play dead" when disturbed, folding their legs and dropping off … Symptoms of infection consist of visible scales on leaf surfaces, chlorosis or dead spots where the scales are feeding, leaf yellowing and premature leaf drop. Examples of sucking pests include aphids, scales, mites, leafhoppers and plant bugs. The powdery appearance comes from millions of tiny fungal spores, which are spread in air currents to cause new infections. See: Pine (Pinus)-Pine needle scale. REC, Dogwood Insect Pests: Identification and Management, Flowering Dogwood Trees: Selection, Care, and Management of Disease Problems, Why Are Leyland Cypress Trees Turning Brown, Azaleas and Rhododendrons: Common Diseases and Abiotic Problems, Boxwood: Preventing and Managing Common Pests and Diseases, Diagnosing Problems of Azaleas and Rhododendrons, Ornamental Fruit Trees: Preventing, Diagnosing, and Managing Problems. 2. 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