Crape myrtle bark scale is relatively easy to iden-tify. Also, make sure they don’t come into contact with any other crape myrtles. 2. Adult females produce a white, felt-like sac around their bodies and lay approximately 100 to 300 pink eggs inside this sac. Crepe Myrtle Bark Scale. The scale is a sucking insect that feeds on the phloem (sap) of plants. Key Features Insect: Adult females produce a white, felt-like sac around their bodies. Maintain proper pruning methods to keep your trees healthy. for Control of Crapemyrtle Bark Scale Cooperator – Gregg County - Longview, Texas Author - Randy Reeves* and Erfan Vafaie** Year - 2016 Gregg County Summary: In the genus Acanthaacoccus, the scale is a type of felt or bark scale. Treat nearby “uninfested” crape myrtles, as well. These products listed below will be discussed in detail then: This honeydew, in tu… Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. You will see white scale insects and black, sooty mold. Crepe Myrtle Bark Scale is a relatively new nonnative scale that was first detected in the U.S. in 2004. Female CMBS will then produce the white felt sac, while male CMBS develop wings and fly off searching for mates. If you live in the Mid-South, you most likely have a crepe myrtle in your yard or certainly in your neighborhood. 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. Treatment of Crepe Myrtle Bark Scale has to be done in stages and the time of the year will dictate what you should treat with. 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. 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. Crepe Myrtle Bark Scale is a relatively new nonnative scale that was first detected in the U.S. in 2004. Exclusion: The simplest and most effective defense against CMBS is to avoid buying and planting infested crape myrtles. Crape Myrtle Bark Scale (CMBS), like its host, originated in Asia. It has been in Tennessee since about 2013. The eggs remain protected within the white colored ovisacs until the crawlers (immatures) hatch and disperse onto the branches. Crape myrtles are a very hardy trees with lots of reserves, so it would take several seasons of bark scale for the tree to succumb to this pest. Expect control to last for the remainder of the season. In its native area it can infest a number of other plants, but right now it is mostly focused on crape myrtles. Identification of crapemyrtle bark scale is relatively simple because this is the first and only bark scale known to feed on crapemyrtle in the United States. 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. Crape myrtle bark scale is an introduced insect pest from Asia, and it has a great affinity for crape myrtle trees. They are using the systemic insecticide imidacloprid. Heavy infestations are easily seen due to abundant black sooty mold and patches of the white or gray scales on the trunk, branches, and twigs of crapemyrtle. •Hi Yield Systemic Insect Spray They feed by using their … Because the female CMBS do not have wings, the long-distance spread of this … •Fertilome Broad Spectrum Fungicide The small CMBS males are winged and will fly to find females and to mate. Always check the crape myrtles before purchasing! The Crepe Myrtle Bark Scale that dies will discolor and fall off the tree over time. 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. A&M has identified this pest as Eriococcus lagerstroemiae, and suspects that it was brought into the U.S. on a crape myrtle plant. Treat again the following year, even if CMBS is not evident. Thanks to its sugary excrement, it turns crapemyrtles with beautiful honey-colored trunks into black sticks with sticky leaves. 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. In spring they produce eggs beneath their body then die. Adult males, which are rarely seen, are winged and mobile. It is one of the only scales known to infest crape myrtles. Crape Myrtle Bark Scale (CMBS) It is a serious threat southern crape myrtle trees. Crapemyrtle bark scales build shells over themselves so normal insecticides won’t kill them. Crape Myrtle Bark Scale is a recent (2004) invasive insect from Asia. The crapemyrtle bark scale is an invasive insect pest that was first reported in the United States in 2004. Expect it to take several weeks before control is obtained. You may be first alerted of the presence of the black sooty mold which has devel… Next spring, between March and May; apply a systemic insecticide call BioAdvanced 12 Month Tree & … This honeydew turns in to a black sooty mold. When crushed, these scales exude pink liquid which apparently is their blood. 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. Up close, CMBS is white t… CMBS readily spreads from tree to tree once it becomes established in an area, even when trees are hundreds of feet apart. A group of entomologists, horticulturalists, and economists around the country have teamed together to tackle this pest. Crepe Myrtle Bark Scale is a serious insect issue to one of our beloved trees in Hampton Roads and with proper identification and control methods together we can control this issue. Bark scale originates from China and was brought to the U.S. in 2010. Crape myrtle bark scale is a felt scale related to azalea bark scale and oak eriococcin scale. CMBS was first identified in north Texas about twelve years ago and has since moved across much of the southeastern US. Heavy infestations of crapemyrtle bark scale produce sufficient honeydew to coat leaves, stems and bark of the tree. Nymphs are tiny … After hatching, the juvenile crawlers will find a spot and then mature; Two-three … This nonnative scale was first detected in the United States in 2004. Identification is two part. The eggs hatch into crawlers which are pink, grey, or brown and move around the crape myrtle’s trunk. Current evidence suggests that the scale may be a migrant from … Treat in late fall to early spring with a high quality oil spray like Fertilome Horticultural Oil Spray. •Fertilome F-Stop Fungicide. 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. Often times, the first sign of CMBS is the black sooty mold on the tree bark. This is why it is so important to identify and control this insect now before it begins to spread to other plant species in the future. Heavily infested crepe myrtles will have large almost completely encrusted sections of the bark or twigs covered in white scale. One may want to plant another species altogether to avoid having this problem in their landscape. This pest threatens to turn what has historically been a beautiful, low-maintenance landscape tree into an unsightly, high-maintenance landscape tree. Photo credit: Rick Grantham, Oklahoma State University; and Helene Doughty, Virginia Tech, bugwood.org, resp. Each female lays about 60 to 250 eggs, which may over-winter within their ovisacs, and then hatch during mid- to late Apri… A soil drench or deep root treatment using a product containing … 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. Adult white scale is a tiny grey or whitish pest easily identified by its waxy, crust-like covering. CMBS will mainly eat off the twigs, branches and trunks. It also reduces blooms and weakens some trees. On new growth and in heavy infestations, the scales may be distributed more uniformly on the branch (Figs. Its closest cousin is the Azalea bark scale, but that species has never been associated with crape myrtle before. 4. 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. Most infestations begin in the smaller branches and twigs at the top of the tree, making larger specimens harder to initially identify until the bark scale moves lower down the tree. It has been verified in all areas of both the City of Huntsville and Madison County. The adults create a white covering making them easier to spot. … 4 through 6). NC State University entomologists confirmed the arrival of CMBS in North Carolina last year. Please stay tuned to our blogs for future information and control methods for the Crepe Myrtle Bark Scale. As with most insects, there are several life stages and the appearance of CMBS changes with the stages. 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, … The crape myrtle bark scale (CMBS) is a felt scale, Eriococcus lagerstroemiae Kuwana (Coccidae), thought to be host-specific mainly to crape myrtle and pomegranate, although we have yet to see any infestations of pomegranate trees in the US. The excess fluid from the scale insect is secreted as honeydew on which sooty mold tends to grow. Apply soil-applied systemic treatment only once per year. The female’s body shrinks as eggs are produced. The disease has spread from the early 2000s throughout the South, affecting more and more trees. Crape Myrtle Bark Scale (CMBS) It is a serious threat southern crape myrtle trees. This smothers the scales that are there. Spray nearby Crepe Myrtles as well, as newly or slightly infested plants may be unnoticeable. crawlers (bottom) of crape-myrtle bark scale . Repeat applications every 2-3 weeks or as needed, and always read label and instructions before using any control. Insecticide Treatments: Soil-applied systemic insecticides are the most effective treatments currently available for CMBS and the easiest to apply. Based on information from similar plant growth zones in China and observations reported f… Crape myrtle bark scale, Eriococcus lagerstroemiae, belongs to a special group of scale insects known as felt scales. 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. Eggs are not seen, as females lay approximately 100-300 pink eggs inside their felt-like sac. 4 … Smaller infestations are much more difficult to identify, in the nymph stage they are very small and usually pink, gray or brown. CMBS, first identified in Texas in 2004, has now spread to at least 12 additional states including Alabama. This can be a difficult pest to control and it may take m… 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. •Fertilome Systemic Insect Drench It is one of the only scales known to infest crape myrtles. The scale has since spread all across the USA. 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. Please contact me with any sightings of this pest The have a waxy coating … 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. Adult females produce a white, felt-like sac around their bodies and lay approximately 100 to 300 pink eggs inside this sac. The best time to treat is in during spring, between April and May. Controlling them requires a two-step approach each year. CMBS is a small, white or gray insect (Image 1). The problem usually goes unnoticed until plants begin turning black with a fungus called sooty mold when it begins to grow on insect droppings. If one has the scale and you purchased them at the nursery, Lowes, or garden center, then they will surely infect the plants in your garden or surrounding area. Crepe myrtles that are subjected to poor pruning habits (looking at you crepe myrtle toppers) are more likely to get bad bark problems. Control options for CMBS fall into four major categories: exclusion, plant selection, plant destruction, and insecticide treatments. 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. This may be misleading since a more common and easy to control pest, … It started in Texas and has moved into at least 11 other states and initially it is infesting only crape myrtles. For years, these trees have been “bullet proof” without any major natural insect enemies or diseases. On new growth and in heavy infestations, the scales may be distributed more uniformly on the branch (Figs. The sooty mold will eventually wash off naturally, but can be washed off gently with soap and water on the main trunks and branches where applicable and noticeable. When crushed, these scales exude pink “blood”-like liquid. When crushed, these scales exude pink “blood”-like liquid. Crape myrtle bark scale, Eriococcus lagerstroemiae, belongs to a special group of scale insects known as felt scales. Crepe myrtle bark scale affects crepe myrtles more that are unhealthy. 3. Management: Crapemyrtle bark scale appears to be difficult to control without the use of systemic … Plant Selection: Right now, there are no varieties of crape myrtles resistant to the pest. 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 (… Crepe Myrtle Bark Scale (let’s call it CMBS) is a small insect that appears as a white or gray felt-like encrustation. Garden Guru Mike Westphal explains how to treat and prevent crepe myrtle bark scale. A little insect called the “Crape Myrtle Bark Scale”, or CMBS, is turning out in mass numbers and when they feed on the crape myrtle sap they excrete a sticky substance called honeydew. Key Considerations for Using Soil-applied Systemic Insecticide Treatments. Once the mated females produce their ovisacs (egg-containing capsules) and lay eggs, they die. Crape myrtles (Lagerstroemia spp.) Crape myrtle bark scale is quite easy to detect on a tree if you have a heavy infestation. It is not a hard or soft scale, it is a bark or felt scale. The female’s body shrinks as eggs are pro- duced. The management practices sometimes … This pest threatens to turn what has historically been a beautiful, low-maintenance landscape tree into an unsightly, high-maintenance landscape tree. They have at least 2 overlapping generations. Rake heavy mulch away from tree base before applying soil drenches. 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. Tiny crawlers hatch from the eggs, settle in their new spot, and begin producing white filaments. Treatments will need to be made in the late spring to early fall time to completely control the Crepe Myrtle Bark Scale. Slowly over the last 13 years it has moved northward and is now a serious threat to Crepe Myrtles in Hampton Roads. Slowly over the last 13 years it has moved northward and is now a serious threat to Crepe Myrtles in Hampton Roads. Just make sure they are disposed of in a landfill or burned. The late fall to early spring time frame is an easier time to identify whether or not you have a problem, as there are no leaves and blooms to hide the infestations. This nonnative scale was first detected in the United States in 2004. A few facts about CMBS. This is the black color that you see. All stages are present now on landscape trees … It is currently the only bark scale known to feed on crape myrtle in the US. 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. In this case, they appear white, and when punctured, are purple. All varieties are susceptible to attack by crape myrtle scales, although research is underway to see if some are more so than others. First, they discuss the history of the crape myrtle bark scale in the United States. 1. The pest causing this damage is called Crepe Myrtle Bark Scale (CMBS). Crape myrtle bark scale is a messy insect pest that leaves behind a sticky honeydew residue in which black sooty mold will develop. Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. With 80% mineral oil this product works as a suffocant and will kill the scale and the sooty mold. Like other scale insects, CMBS is cousin to aphids and other piercing-sucking Hemipterans. CMBS might be found anywhere on crepe myrtles bark, and often appears near pruning sites and branch crotches of more mature wood. It now appears that this species of scale was introduced to the U.S. from China. People have reported infestations in East Texas, from Dallas, Tyler, and Longview. One adult can lay up to 300 eggs, making this scale one of the fastest to spread in short time frame. As of right now, crape myrtle bark scale has not proved to be fatal to any species of plant. Scale insects are herbivores, piercing plant tissues with their mouthparts and remaining in one place, feeding on sap. On new growth and in heavy infestations, the scales may be distributed more uniformly on a branch. Do not expect sooty mold to disappear quickly after treatment. 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