The Chinese wax scale, (Ceroplastes sinensis Del, Guercio, 1900) is the most distinctive of the three species. In 2013, we added Indian wax scale, white prunicola scale and juniper scale to the monitoring list to better determine crawler periods. Wax scale can be 3-8mm in diameter and are white, cream, pink, or gray. Use carbaryl (Sevin) three times, at two-week intervals, starting in mid-April to control the baby scale as they emerge from under the adults. Synonymy. Biological control of pink wax scale. Wax scales generally do best in humid coastal districts where temperatures are more moderate. Insecticidal soap can also be sprayed on houseplants to kill scales. (1974) In the tropics and subtropics, but also warm temperate regions. Introduction. How to Treat Scale on Shrubs. And, when the scale goes to crawler stage, contact insecticides such as insecticidal oil … However, a pest management program that incorporates natural, mechanical, and/or chemical controls (as described below) should provide satisfactory control of most scales on most ornamental plants. Also known as armoured scale. Scale insects come in many types, but here are a few of the most common. A range of predators and parasites will attack pink wax scale. Ceroplastes rubens. Cerostegia floridensis (Comstock), Gimpel et al. Mix about 5 tablespoons of insecticidal soap or a very mild dish soap into 1 gallon (3.8 L) of water. Asia, East Africa, North (restricted to Florida and Hawaii), South and Central America, the Caribbean, Europe (on plants grown in the open as well as under cover), Oceania. They can produce large quantities of honeydew causing a black sooty mould which can downgrade fruit and, if severe will even limit photosynthesis. Lecanium scale – The oak lecanium scale is abundant on willow oaks and other oak species . Soft scale (for example pink wax scale and soft brown scale) are usually found on the mid-rib of leaves and stalks of host plants. Distribution. They are a major pest of camellias and some hollies. Try using insecticidal soap. The Florida wax scale, Ceroplastes floridensis Comstock, is one of the most commonly encountered soft scales throughout the southern United States, where it is a serious pest of citrus and several ornamental plants, like holly. The mature females are coated with thick layer of off-white wax that is coloured pinkish brown in patches, and has white `dry' wax in lateral and dorsal depressions. The key to scale control is timing your spray to kill the crawlers just after they hatch from the eggs in April. Ceroplastes vinsonii Signoret (1872) (Ben-Day 2012). Pink wax scale, red wax scale. There are systemic insecticides available that can be used to control scale. Worldwide. Crawlers hatch around June which is the best time for control. Numerous species of scale insects, typically classified as soft or armored, can attack a broad array of shrubs. Florida wax scales look like waxy, white domes about the size of a nail head and occur on a wide variety of plants. Scale insects are difficult to control because the waxy or cottony covering serves as a protective barrier to traditional contact insecticides. Tea scale insects are about the size of a hyphen, appear slightly fuzzy and are white or brown. Pour the soap into a spray bottle and spray the plant, including the undersides of the leaves and stems, until the soap solution begins to drip. MORE INFORMATION: Wax Scale Fact Sheet Scientific Name. Hard scale (for example red citrus scale) has an oyster like coating and is difficult to control. Crawlers just after they hatch from the eggs in April white prunicola scale and juniper scale to monitoring! 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