Rake heavy mulch away from tree base before applying soil drenches. It’s a small sap-feeding insect that lives on the bark of certain plants, especially crapemyrtle. CMBS will mainly eat off the twigs, branches and trunks. https://www.southernliving.com/garden/trees/crepe-myrtle-bark-scale Crepe myrtle bark scale affects crepe myrtles more that are unhealthy. Please stay tuned to our blogs for future information and control methods for the Crepe Myrtle Bark Scale. Adult female, what you may see on the tree, are round and gray-white in color; Adult female is immobile – no wings or legs; Adult male has wings but doesn’t feed; Immobile in its adult stage; The eggs are laid underneath the insect. The disease has spread from the early 2000s throughout the South, affecting more and more trees. Expect control to last for the remainder of the season. Do not expect sooty mold to disappear quickly after treatment. Each female lays about 60 to 250 eggs, which may over-winter within their ovisacs, and then hatch during mid- to late Apri… When crushed, these scales exude pink “blood”-like liquid. The adults create a white covering making them easier to spot. As of right now, crape myrtle bark scale has not proved to be fatal to any species of plant. Crape myrtle bark scale is relatively easy to iden-tify. Tiny crawlers hatch from the eggs, settle in their new spot, and begin producing white filaments. In one year, there could be at least two generations of CMBS. to get the buzz about new arrivals, exclusive savings & more, sign up for our gardenRewards emails and receive $5 off your total purchase, Identifying and Treating Crepe Myrtle Bark Scale. Crepe myrtles that are subjected to poor pruning habits (looking at you crepe myrtle toppers) are more likely to get bad bark problems. Thanks to its sugary excrement, it turns crapemyrtles with beautiful honey-colored trunks into black sticks with sticky leaves. Please visit any of our year round locations to talk with a Garden Pharmacy employee to help identify and control any issues you may be having in your garden or landscape. CMBS has only infested Crepe Myrtles in the U.S. so far, but in other parts of the world it has infested other species of plants that we do plant in our area. Crepe Myrtle Bark Scale is a problem that all Crepe Myrtle are likely to get, and although the insect may not kill the plant, the sticky bug and the black mold are an ugly nuisance. Adult females produce a white, felt-like sac around their bodies and lay approximately 100 to 300 pink eggs inside this sac. This pest threatens to turn what has historically been a beautiful, low-maintenance landscape tree into an unsightly, high-maintenance landscape tree. The have a waxy coating … Crape Myrtle Bark Scale is a recent (2004) invasive insect from Asia. Next spring, between March and May; apply a systemic insecticide call BioAdvanced 12 Month Tree & … The management practices sometimes … Female scales produce fluffy white filaments that cover their body. Crepe Myrtle Bark Scale (or CMBS) is relatively easy to identify in heavy infestations, but can be difficult to notice in its early stages on Crepe Myrtles. Based on information from similar plant growth zones in China and observations reported f… Apply soil-applied systemic treatment only once per year. On new growth and in heavy infestations, the scales may be distributed more uniformly on the branch (Figs. If you live in the Mid-South, you most likely have a crepe myrtle in your yard or certainly in your neighborhood. Repeat applications every 2-3 weeks or as needed, and always read label and instructions before using any control. They are using the systemic insecticide imidacloprid. On new growth and in heavy infestations, the scales may be distributed more uniformly on the branch (Figs. CMBS produce large quantities of honeydew, a sticky substance that gets on the leaves and branches and trunks of the plant and then will usually encourage the development of sooty mold, which will turn dark brown to black over a short amount of time. Current evidence suggests that the scale may be a migrant from … Once the mated females produce their ovisacs (egg-containing capsules) and lay eggs, they die. Adult females look similar to felt and are colored either white or gray and they have encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. It is one of the only scales known to infest crape myrtles. Up close, CMBS is white t… It is one of the only scales known to infest crape myrtles. Crape myrtle bark scale is a messy insect pest that leaves behind a sticky honeydew residue in which black sooty mold will develop. Key Considerations for Using Soil-applied Systemic Insecticide Treatments. Crepe Myrtle Bark Scale is a relatively new nonnative scale that was first detected in the U.S. in 2004. In spring they produce eggs beneath their body then die. They have at least 2 overlapping generations. 2. •Fertilome F-Stop Fungicide. A&M has identified this pest as Eriococcus lagerstroemiae, and suspects that it was brought into the U.S. on a crape myrtle plant. Just make sure they are disposed of in a landfill or burned. Scale insects are herbivores, piercing plant tissues with their mouthparts and remaining in one place, feeding on sap. Adult white scale is a tiny grey or whitish pest easily identified by its waxy, crust-like covering. This nonnative scale was first detected in the United States in 2004. Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. It has been in Tennessee since about 2013. 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 female’s body shrinks as eggs are pro- duced. This nonnative scale was first detected in the United States in 2004. •Fertilome Broad Spectrum Fungicide A few facts about CMBS. The mold and the scale both need to be coated in the Horticultural Oil in order to be controlled effectively, so spray the branches, twigs and trunks liberally until dripping. All stages are present now on landscape trees … Exclusion: The simplest and most effective defense against CMBS is to avoid buying and planting infested crape myrtles. As with most insects, there are several life stages and the appearance of CMBS changes with the stages. You will see white scale insects and black, sooty mold. Insecticide Treatments: Soil-applied systemic insecticides are the most effective treatments currently available for CMBS and the easiest to apply. Eggs are not seen, as females lay approximately 100-300 pink eggs inside their felt-like sac. Crepe Myrtle Bark Scale is a relatively new nonnative scale that was first detected in the U.S. in 2004. Measure trees before buying product so you know how much to buy. come in many shapes and sizes, but some now come with a new twist: a tiny insect, native to China, is now infesting these beautiful flowering trees in several southern states.Crape Myrtle Bark Scale (CMBS), first discovered in the Dallas, Texas, area in 2004, is threatening to turn what has traditionally been a perennial favorite with few pests into an unsightly, … It has only been found on crape myrtles and American beautyberry (Callicarpa americana) in the US, but has been found on other species outside the US. Controlling them requires a two-step approach each year. This honeydew, in tu… In this case, they appear white, and when punctured, are purple. The crapemyrtle bark scale, Acanthococcus (=Eriococcus) lagerstromiae(Kuwana), was first confirmed in the USA in 2004 in the landscape near Dallas (TX), although it was likely introduced earlier. When crushed, these scales exude pink liquid which apparently is their blood. A group of entomologists, horticulturalists, and economists around the country have teamed together to tackle this pest. Plant Destruction: If the trees are just too infested and the costs of insecticide treatments are just too expensive, then you can eradicate them from your landscape. In its native area it can infest a number of other plants, but right now it is mostly focused on crape myrtles. Often times, the first sign of CMBS is the black sooty mold on the tree bark. Female CMBS will then produce the white felt sac, while male CMBS develop wings and fly off searching for mates. Plant Selection: Right now, there are no varieties of crape myrtles resistant to the pest. This can be a difficult pest to control and it may take m… Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. •Fertilome Systemic Insect Drench With 80% mineral oil this product works as a suffocant and will kill the scale and the sooty mold. The excess fluid from the scale insect is secreted as honeydew on which sooty mold tends to grow. NC State University entomologists confirmed the arrival of CMBS in North Carolina last year. The scale has since spread all across the USA. CMBS is a small, white or gray insect (Image 1). 1. It now appears that this species of scale was introduced to the U.S. from China. Infestation can occur by wind or as a result of crawlers being transported on birds or flying insects, as well as by gardeners and landscape maintenance equipment and personnel. When properly applied, these treatments usually provide effective control, but it takes several weeks for treatments to work, and sooty mold that has already accumulated will remain after control has been achieved. It has been in Tennessee since about 2013. The small CMBS males are winged and will fly to find females and to mate. means that two generations of CMBS are likely for areas of Oklahoma north of I -40 but areas south may experience three and possibly four generations. Crape Myrtle Bark Scale (CMBS), like its host, originated in Asia. Since 2013, in the city of Germantown, there has been a suspicious decrease in the health and appearance of one of the South’s ubiquitous flowering tree species, the crepe myrtle. •Hi Yield Systemic Insect Spray First, they discuss the history of the crape myrtle bark scale in the United States. This new “bug”, Crapemyrtle Bark Scale (CMBS), is an insect from Asia that attacks crapemyrtles. On new growth and in heavy infestations, the scales may be distributed more uniformly on a branch. On old growth, the scale insects may be aggregated around pruning wounds or branch crotches, whereas distribution is typically more uniform on new growth where the small, pink juveniles (… Crape myrtle bark scale is an introduced insect pest from Asia, and it has a great affinity for crape myrtle trees. CMBS might be found anywhere on crepe myrtles bark, and often appears near pruning sites and branch crotches of more mature wood. Management: Crapemyrtle bark scale appears to be difficult to control without the use of systemic … 4 through 6). Always check the crape myrtles before purchasing! The crapemyrtle bark scale is an invasive insect pest that was first reported in the United States in 2004. Photo credit: Rick Grantham, Oklahoma State University; and Helene Doughty, Virginia Tech, bugwood.org, resp. Treat again the following year, even if CMBS is not evident. 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