It is one of the only scales known to infest crape myrtles. Crepe myrtle bark scale treatment may require several different techniques, and management of the pest requires persistence. Lichens thrive in sunny parts of a plant with few leaves, but are not responsible for thinning leaves. Maintain proper pruning methods to keep your trees healthy. Sooty mold alone is not a definite indication of CMBS, but if you also find white, felt-covered scales that bleed pink when punctured, you can be sure you have found crape myrtle bark scale. CMBS is a miniscule insect that appears as a felt-like gray or white crust on crape myrtle branches, often on the underside away from the sun. Heavy infestations of crapemyrtle bark scale produce sufficient honeydew to coat leaves, stems and bark of the tree. It is one of the only scales known to infest crape myrtles. 4 through 6). Crape Myrtle Bark Scale - What is this white stuff on my crape myrtle trees? Black Residue on Crape Myrtle Trees. Eggs hatch into tiny pink crawlers, and the older nymphs are pink, gray, or brown. While they are fairly hardy, there are problems that can arise if you don’t have suitable information on crepe myrtle care. Crape myrtle bark scale (CMBS) insect has been found in Fauquier. Crape myrtle is ideally suited for community plantings since it is long-lived, withstands droughts after becoming established, and is relatively free of disease and insect difficulties. Its closest cousin is the Azalea bark scale, but that species has never been associated with crape myrtle before. Pictured: CMBS life stages encrusting a small crape myrtle branch. It has been verified in all areas of both the City of Huntsville and Madison County. The small CMBS males are winged and will fly to find females and to mate. This nonnative scale was first detected in the United States in 2004. It looks like a white speck stuck to the bark of a trunk or branch. If you suspect that your trees are infected, use a systemic insecticide, such as imidacloprid, when trees begin to show signs of new growth in the spring (late March–May). CMBS might be found anywhere on crepe myrtles bark, and often appears near pruning sites and branch crotches of more mature wood. This insecticide should be applied only once a year as a soil drench; however, it may be necessary to reapply in successive years. On new growth and in heavy infestations, the scales may be distributed more uniformly on the branch (Figs. They are using the systemic insecticide imidacloprid. This new “bug”, Crapemyrtle Bark Scale (CMBS), is an insect from Asia that attacks crapemyrtles. How do I stop the suckers? Although gray-green lichens may look ugly on a crape myrtle's bark, they won't do physical harm. How to Treat Crepe Myrtle Bark Scale. Adult females produce a white, felt-like sac around their bodies and lay approximately 100 to 300 pink eggs inside this sac. In addition to the presence of these bumps there is often also an emergence of unsightly black sooty-looking mold which develops resembling black dust on the leaves and bark of the crape myrtle plant.These are the defining characteristics which make up crape myrtle ba… Crape myrtle bark scale is relatively easy to identify. Crepe myrtle scale arrived here a few years ago as an accidental import from Asia. Keep reading for tips on growing crepe myrtle trees so you can enjoy these amazing plants year round. When pressed or scraped, CMBS leaves behind a pinkish residue. Crepe myrtle bark scale affects crepe myrtles more that are unhealthy. The invasive Asian insect called “crape myrtle bark scale” first showed up in the US around 2006 but has been spread far and wide, partly via infested trees being sent to garden centers, then to gardens, then from tree to tree. Heavy infestations of crape myrtle bark scale are easy to spot and identify. Biological control is another option. As it feeds, it excretes a sugary solution known as “honeydew” (similar to aphids, whiteflies, and other sucking insects). : https://www.youtube.com/watch?v=5f2kuFSGkNgQ\u0026A - Why does my Crape Myrtle have curling leaves? Crape Myrtle Bark Scale is a recent (2004) invasive insect from Asia. Several lady beetle varieties have been found to be predators of CMBS, however, the scale multiplies faster than the beetles so beetle lures are a necessary for successful results. First, if the plant is small enough, spray the whole plant with a dormant oil. Helpful FAQ’s and information just for our Master Gardener Interns. Crepe myrtle (Lagerstroemia) is one of the best flowering trees in the world. Southern favorites, crepe myrtles (Lagerstroemia indica), produce showy, long-lasting summer blooms. Crape Myrtle Bark Scale (CMBS) It is a serious threat southern crape myrtle trees. This can be a difficult pest to control and it may take m… Crape myrtle bark scale, Eriococcus lagerstroemiae, belongs to a special group of scale insects known as felt scales. Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. Agent Marcus Garner with the Madison County Extension Office said … The best time to treat is in during spring, between April and May. is a deciduous shrub or tree that ranges in height from 3-foot dwarves to towering trees of 50 feet. UT Extension Agent Chris Cooper and Mike Dennison show how to use a soil drench to treat Crape Myrtle Bark Scale. Crepe Myrtle Bark Scale is a relatively new nonnative scale that was first detected in the U.S. in 2004. CMBS might be able to overwinter in the adult female and egg life stages, and crawlers and later stage nymphs have been observed overwintering under the loose bark and in cracks and crevices of crapemyrtles in our area. The crapemyrtle bark scale, Acanthococcus (=Eriococcus)lagerstroemiae (Kuwana), is an invasive felt scale in the family Eriococcidae (or Acanthococcidae, as the taxonomy of this family is still being debated). With approximately 50 species, this tree is cultivated in warmer climates, and is indigenous to Southeast Asia, the Indian subcontinent, and northern parts of Australia. First detected in northern Texas in 2004, CMBS is spreading throughout much of the southern U.S. As the crape myrtle bark scale spreads throughout Texas, one of the first questions we hear is “will the scale kill my tree?” The answer appears to be “no”, at least not often. This group is in the superfamily Coccoidea(scale insects) and the order Hemiptera (true bugs). This honeydew, in tu… It has been in Tennessee since about 2013. *Pictures of Crape Myrtle Bark Scale were provided by the University of Arkansas Cooperative Extension Service. The entire tree turned black and sappy. Feb 17, 2014 - Q: A couple of weeks ago you recommended tree-form crape myrtles for low maintenance. The scale is a sucking insect that feeds on the phloem (sap) of plants. Crepe Myrtle Bark Scale (let’s call it CMBS) is a small insect that appears as a white or gray felt-like encrustation. The crape myrtle bark scale was first confirmed in the United States in 2004 in landscape near Dallas, although it was likely introduced earlier. Thousands of scales encrusting the bark will literally turn it white. This is a small insect that sucks the sugary juices of the tree. They measure the circumference of each stem at the four-foot height and after doing some math they mix the imidacloprid concentrate in a gallon of water and pour it on the ground around the crape myrtle. I … Slowly over the last 13 years it has moved northward and is now a serious threat to Crepe Myrtles in Hampton Roads. Once the mated females produce their ovisacs (egg-containing capsules) and lay eggs, they die. 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