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tree scale treatment

02.12.2020

Damage. Pine needle scale will appear to be whitish scabs on the needles and stems of the plant. Scale can sometimes have the appearance of bumps or spots on plants. It can be applied during the tree’s dormant season to kill off insects such as scale, aphids and mites. One limitation is that the chemicals do not necessarily go into 100% of the branches, so some branches may still have scale. I want to use it everyday because it feels so good and smells so good. A new pest threatens the South’s favorite flowering tree There is a new insect pest coming after the South’s favorite flowering tree: Crepe Myrtle Bark Scale. It’s natural and it doesn’t hurt the tree but will suffocate the insect. As soon as mealybugs appear, destroy their protective shell with a rag dipped in beer, 90-proof alcohol or soapy water, and then treat with scale insect spray. Eventually, branches become encrusted with this armored scale. Keep trees well-watered and suitably pruned, and be sure to carefully inspect new plants and trees for infestations before you bring them into your yard. Adult scales become stationary, feeding on one spot of the host. If you’ve got scale on your citrus trees, you’ll probably also notice that there are ants crawling over your tree too. Preventive treatment against scale insects and mealybugs. Fully developed females are much larger and sometimes have a waxy coating. NOTE: There are other different types of scale and some scale insects are host specific, such as rose scale, white palm scale, gum tree scale and tea scale (camellias). The pest is very common in the tri-city area of Michigan at this time. Produce a sugary liquid called honeydew 2. The soft bodied scale is not fastened permanently to the tree. SCALE INSECT TREATMENT With a yard full of trees, you give your home an air of sturdiness and solidity. Flip over suspiciouslooking bumps on twigs and branches with a thumbnail. Ants like to ‘farm’ the scale to feed on the honeydew. Horticultural oil is approved for organic production and is used by both organic and conventional growers. The success of any treatment can be gauged by the extent to which new growth remains free of scale insects. We often inject dinotefuran at the first visit, followed a few days later by an injection of imidacloprid. Find the best Tree Disease Management near you on Yelp - see all Tree Disease Management open now. Aphids are also known as plant lice. Controlling the scale will also get rid of the sooty mould. Lecanium scale is a group of common soft scale insects that feed on the sap from shade trees and woody ornamentals. Generally, they are divided into two categories, armored (hard) and soft scale. Once all the leaves have fallen, saturate the tree with a dormant oil. for quick results supplemented with soil drench of. Scale insects can be devastating to citrus trees. If you have scales on your trees, you can spray them with a horticultural oil. If seeking treatment at an emergency room or doctor’s o˜ce, bring this product label to show medical personnel. Our treatment of choice is trunk  injection of dinotefuran, usually supplemented by trunk or ground injection of imidacloprid. When controlling citrus scale, one may also need to eliminate the ant colonies , which thrive upon the honeydew extruded from the scale. The pests are tiny insects which suck sap from the citrus tree and then excrete honeydew which accumulates on leaves, branches and fruit. If you are just now spotting the problem, you can clean off the trunk with warm, soapy water to remove the black sooty mold. If treatment is necessary, spray the tree or shrub with a dormant rate of horticultural oil during the dormant season to control overwintering scales. Now spray the leaves and stems with the lye. For inside plants, treat against scale insects from fall until the beginning of spring, 3 to 4 times in all. Magnolia scales produce large quantities of honeydew (sugary excretion) that accumulate on the tree’s leaves and twigs. Give us a call at 703-573-3029 or book online as soon as possible to schedule a consultation with one of our Certified Arborists. The soft scale gives off large amounts of honeydew upon which sooty mold fungus forms, they can move on their own but often they are moved to other areas when ants relocate them. Still not sure if you have scale? The best thing about systemic treatment is that it does not kill the beneficial predatory insects (twice-stabbed ladybugs and tiny parasitic wasps). Some types of armored scales include pine needle scale, oyster shell scale, and euonymus scale. These six-legged insects are smaller than a pinhead. If you think your tree is showing signs of White Prunicola Scale or if your tree had this insect last year, we can help. Best magnolia scale treatment varies based on the severity of the infestation, the time of the year and the overall health of the tree: ... Dead scale insects on the ground and healthier, fungus free tree are usually signs that the treatment is working. Curative treatment against scale insects and mealybugs . GET A QUOTE. NOTE: There are other different types of scale and some scale insects are host specific, such as rose scale, white palm scale, gum tree scale and tea scale (camellias). In multiple stem trees, it can be difficult to get more than 60 to 70 % canopy coverage and scale control, but when the soil applied product spreads, control may improve. The increased cost is justified because the method is VERY effective and may last two or more years, especially if "boosted" by the homeowner with soil applications of imidacloprid, (see below). There are all sorts of scale insects that feed on landscape trees and shrubs here in our area. There are two main groups of tree scale—soft and armored (hard). These scales flatten themselves against tree … Scale insects on indoor plants can breed all year round and so there is no best time of year to treat. Safari Tree can help provide your trees and shrubs with the ultimate care! Occasionally, a tree or shrub will die as the result of a severe infestation if it is not effectively managed. Different species of scale vary in appearance and there are more than 1,000 species in North America. Treatment of scale on plum and cherry trees. Scale infestations weaken the host tree, and if the infestation is severe enough the tree can die. 4) European fruit lecanium scale, Parthenolecanium corni. How do I know if I have it? Petroleum-based oils reduce the amount of scales. Aphids. There are two main groups of tree scale—soft and armored (hard). Currently, these insects are in their crawler stage feeding on the sap of the tree’s leaves. Others attack a variety of hosts such as white wax scale occurring on gardenias and citrus; and cottony cushion scale occurring on figs, rose, magnolias, grevilleas and citrus. They damage plants by sucking out plant juices. Gardeners use spray oil as a selective pesticide treatment for scale on citrus trees. For a large infestation, two applications of insecticide spaced 7 days apart may be necessary to rid the tree of scale. LECANIUM SCALE is another "soft scale" insect which is very prevalent in the tri-city area at this time. Both use long, needle-like mouthparts to suck out sap from the host tree or plant.Characteristics of Soft Scales 1. Other species of wax scales include tree dwellers like the cottony maple scale (Pulvinaria innumerabilis) or the calico scale (Eulecanium cerasorum). My niece, who is a Paul Mitchell stylist, sent me a bottle of this Tea Tree Hair and Scalp Treatment. 3  Spraying with horticultural oil is effective in late spring just before the leaves unfurl. That time is usually late summer. The white egg sacs burst open in July as the eggs hatch and the immature scales crawl out to the leaves. Tree disease protection begins with a comprehensive inspection of your landscape by one of our ISA certified arborists. However, treatment is necessary. Large trees with serious scale problems will need professional application of one or more insecticides by trunk injection and/or soil injection. Gloomy scale is very difficult to manage after populations are established. Scale insects belong to a large group of sucking insects that attack a wide variety of trees and shrubs. Armored scales and soft scales are the most common types (or families). Scale is most common on new, tender, woody growth. Treatment Of Scale Insects . You can try horticultural oil treatments or to smother the new generation of scale insects that will hatch from eggs hidden under the waxy scales formed by their mothers bodies. If you have an unhealthy or stunted olive tree that is showing signs fo Black Scale infestation like ours, here’s how we managed to revive the poor tree. The rate may be reduced if several trees are treated in one yard or neighborhood. Resembling small bumps on twigs and branches, scales don’t look like most insects; therefore, they can easily go undetected. HELP. Others attack a variety of hosts such as white wax scale occurring on gardenias and citrus; and cottony cushion scale occurring on figs, rose, magnolias, grevilleas and citrus. Gloomy scale occurs on the soft maples like silver and red maple. A native soft scale that feeds on different species of shade trees, including maple, hawthorn, dogwood, sycamore, and linden. All scale insects feed on the sap or plant juices of their host plant. Scale insects suck sap from plants, depriving them of essential nutrients that often results in the death of the tree or plant. Magnolia scale is the largest scale insect in Iowa. Upon closer examination, these branches are likely to be covered with small bumps that are actually scale insects. The mature female is a dark red, brown, or purple oval surrounded by a white cottony wax fringe on the sides of the body. Sap feeding by the scales causes stress to heavily infested plants and can result in stunted growth, yellowish foliage, branch dieback, or death of the plant. 1 Response. This is a secretion from the scale called honeydew and it often acts as an attractant for ants or as a growth source for sooty mold. Thankfully, properly timed treatment can prevent the production, growth, and spread of the spores that cause tree diseases. In most single stem trees, we see 80 to 90 % reduction of scale populations and honeydew production. The soapy mass settles in the respiratory tract of the scale insects until they suffocate. Monitor three to four year old twigs for the gray protective covers of this armored scale insect. The most common scale insects that infest maple trees are the armored varieties oystershell scale and scurfy scale, as well as the soft varieties cottony maple scale and lecanium scale. Citrus Tree Scale treatment. They do not secrete honeydew.Soft – Secrete a waxy film (up to 1/2 inch long) that is part of the body. Contrary to its name this is a native scale. When adult scale is attached to the tree, it often appears as crusty or waxy bumps on the tree and is often mistaken for part of the tree’s own growth, but it is actually an insect. The honey-dew falls onto surfaces below and sooty mold proliferates in the sticky sweet substance. No need to remove your trees if you suspect infestation. It can be applied during the tree’s dormant season to kill off insects such as scale, aphids and mites. At home, management of your trees is important to confine the insects and save your trees. The sooner White Prunicola Scale … Magnolia scale insects are mobile only during the crawler, or nymph, stage. Insecticide applications must be timed to ensure trees are protected prior to when nymphs insert their mouthparts into the needles and begin to feed. Treatments For White Prunicola Scale: White Prunicola Scale can be difficult to control; however, with a combination of overall health improvements and targeted scale treatments, our Arborists can help stop them from destroying your trees. Treatment of the scale is difficult, especially on large trees. Scales in other families include important pests of cactus, elm, oak, sycamore, and various conifers. However, these scales also cause significant lower branch dieback and can be seriously stressful to the tree. Notoriously hard to control, scales are sap-sucking insects that prey on most kinds of trees and plants. During early growth stages, scales are called crawlers because they are mobile. Sprays are often ineffective and can worsen the condition if done in May and June, because beneficial predatory insects are killed while the adult scales are largely resistant to treatment by sprays. Deep root fertilization applied by a certified arborist ensures the tree's health is robust and aerates the soil. Also see Armored (h ard scales) for additional scale insects. Check plants for live scale infestations. This product is amazing! Usually larger than armored scales 3. for longer lasting scale control. Under severe conditions an infestation may kill the entire tree. Scale insects in the garden can be combatted in a number of ways, the best of which involves prevention or removing infested plant material before the insects can spread. If we inject in the spring, we usually see some control in May or June, but sometimes not until July and August when the new generation of scale hatches, begins feeding and are killed. Some look like tiny oyster shells, some resemble fish or reptile scales, and there are plenty of others. In most cases, they are able to move short distances (but rarely do) and produ… Often, a sticky substance can be found near the scale or on leaves. The European elm scale occurs only on elm trees. The injected dinotefuran will rapidly spread throughout the canopy of the tree, usually within a few days. SCALE INSECTS are the usual cause of sweet, sticky drippage (honey-dew) from trees that collects on surfaces below. Scale insects can be divided into two groups:Armored (Hard) – Secrete a hard protective covering (1/8 inch long) over themselves, which is not attached to the body. I use it when I can tell my hair needs either a deep cleaning, or a moisture boost. Do not expect adult scale to fall off after an insecticide treatment. Gloomy scale attaches to the bark of the tree… Injections can be given at any time in the growing season, when leaves are on the tree or in the spring just before leaves open. Don’t have a shell, instead they secrete a cotton-like or waxy substance over their bodies for protection. If left uncontrolled, one or two major infestations can kill your tree. They insert their mouthparts into the plant and don't move thereafter, feeding out of the same hole in the tree the rest of their lives. Larger trees are a challenge because of their size, but an effective method in this case is to inject systemic insecticides into the soil or the tree trunk. There’s nothing worse than watching a healthy tree gradually succumb to disease, only to become a safety hazard. The cost for trunk injection is usually around $10 per trunk diameter inch. Prune and destroy heavily infested twigs and branches. Scales in other families include important pests of cactus, elm, oak, sycamore, and various conifers. If you notice a light infestation beginning on already established trees, immediately prune back the twig or branch and dispose of it. Will crape myrtle bark scale kill my trees? The syrupy secretion can attract a fungus, called sooty mold, which covers and discolors infested trees and plants, as well as sidewalks, roofs, and other surfaces. APHIDS are often blamed, and sometimes contribute to the honeydew, but by far the most copious honeydew production is by soft scale insects described below. Once dead, the soft scale will fall from the tree instead of remaining stuck as the armored scale. I DO! This will smother scales and also mites and other soft-bodied insects. Scale insects thrive in warm, moist locations and typically target the underside of plant leaves and leave joints. Shaped like rounded bumps 4. Commercially available beneficial insects, such as ladybugs and lacewing, are natural predators of the young larval or “crawler” stage. by calling 817-882-6499 to schedule an appointment with our ISA certified arborist. One of the more recent advances involves treating tree pests with soil treatments. The adult female scales are tan to brown, 1/4” in diameter, round and immobile. For assistance with identifying, treating, and preventing tree scale and other pests, contact Elite Tree Care today at 610-935-2279. Horticultural Oil Precautions Test the spray on a leaf or two. In the spring, the nymphs become immobile, feed on tree sap, and mature into an adult. Let’s look at what lichen on tree bark means and what the treatment for tree lichen is. Thank you. She and her husband raved about it, and decided I should feel the same way. Scale insects can overwinter as nymphs or eggs tucked away in tree bark. Leafminers, such as birch, boxwood, and alder leafminers, and some borers such as bronze birch borer are vulnerable to soil injection. The Signs and Symptoms of Magnolia Tree Scale. These are small insects and affect the stem, trunk, and … I have a citrus tree grown from seed which I recently took on from a friend of ours. The scale will NOT kill your trees but they reduce the amount and size of the blooms and the sooty mold makes them less attractive. Heavy scale infestation on persimmon tree. Can you recommend a treatment or company that can help me with this. More than 60 different kinds occur in Indiana, yet they are often overlooked or ignored until tree or shrub branches “mysteriously” start to die. Like the cottony maple scale and other soft scales, the lecanium scales excrete large amounts of honey-dew with its attendant nuisance factor. We see many ashes and sugar maples in Midland with severe lower branch dieback caused by this scale insect. TriCity Tree Doctor  Call us at 989-454-0227, United Tree Service  Call us at 810-266-4363. Kermes scale is aggressive and can cause significant damage in oaks, and treatment is necessary when infestations advance to cover most of the tree – of course, the earlier treatment is implemented, the better prognosis for the tree. Explore other popular Home Services near you from over 7 million businesses with over 142 million reviews and opinions from Yelpers. Crawlers As spraying large trees has become more difficult and controversial, new treatment methods have been investigated. The treatments target the crawlers, not the adults. Call Elite Tree Care today at 610-935-2279 and let's talk about how we can help you with Tree Scale and other Pennsylvania tree pests. Honeydew also leads to sooty mould, a black dusty fungus that grows over the leaves and stems. Systemic insecticides work very well to control the bark scale, but the timing is most effective when applied in late winter/early spring. Another natural and easy-to-produce remedy for scale insects on the lemon tree is soapy water. Adults will die naturally after reproducing, but will remain attached to the tree … We provide plant scale treatment in Fort Worth, TX. Scales shoot a sweet substance called honeydew. The hard scale lives and feeds under this spherical armor and does not move about the plant. Twig or branch dieback is common when an infestation of this insect occurs. When a soft body is beneatha cover, the plant is likely to have live armored scales. Black scale in olive tree (Saissetia oleae Olivier, 1791), is one of the most important pests in the olive grove.. Saissetia oleae, is also commonly known for tizne mealybug or carapace.. Like the Prays and the olive fruit fly, the black scale can cause significant damage.. European elm scale—Gossyparia spuria. Wait 24 to 36 hours to make sure the … Although the insect does not usually cause much damage to the tree, it is truly a pest to the humans who live below because of the copious honey-dew excretions of the insect. Tree Disease Treatment. The scale sucks sap from the tree and causes leaves to turn yellow and drop. Sucking insects such as aphids, scale insect crawlers, adelgids and lace bugs can be effectively treated. Lichens on trees are unique and harmless but some may consider them unsightly. Yet no matter how solid your trees are, they’re vulnerable to insect attacks. Some types of soft scales include lecanium scale, cottony maple scale, and magnolia scale. In the past, treating insect pests of large trees involved spraying them from the ground. Oystershell scale is pretty common on aspen in Wyoming. Scale insects are small, non-mobile insects that attach themselves to the wood, foliage, and, sometimes, the fruit of trees. Send our experts a photo and ask for their advice. Insecticide applications are successful when scheduled and administered by a tree expert. In lighter concentrations, horticultural oils can also be applied during the growing season. It's 8-10 years old, seems to be in good health, is about a metre high, and is wintering indoors in a sunny south aspect. Kermes scale is a serious insect pest of pin and red oak. Heavily infested branches should be pruned and destroyed. Heavy infestations may cause leaf yellowing, stunting, and dieback. Honeydew then turns to sooty mold and that interferes with photosynthesis in leaves, and can cause leaf drop and branch die back. For a magnolia scale treatment to be effective, you have to spray the insecticide at the right time in the insect's life cycle (mainly, at the crawler stage). COTTONY MAPLE SCALE is an insect pest of maples, especially silver maples and locust trees primarily, but also will infest several other species. Cottony camellia scale. Within two weeks of treatment, our poor olive tree started to look better. Bernalillo County New Mexico. Magnolia scale can be very hard to get rid of on your own. Honeydew promotes the growth of a black sooty mold, that imparts a blackened appearance to leaves, twigs, branches, and other substrates beneath an infested host plant. To make the lye, take a teaspoon of curd soap to a liter of water. Phyllis, Albuquerque . Ants like to ‘farm’ the scale to feed on the honeydew. Best magnolia scale treatment varies based on the severity of the infestation, the time of the year and the overall health of the tree: Prevention is the best medicine – a healthy well-watered and well maintained tree is less likely to develop a scale infestation Pruning the affected branches and twigs To protect parasites, avoid spraying with insecticides during the summer. To control magnolia scale successfully, you must spray the insecticide (for example, malathion or acephate) at the right time in this insect's life cycle (namely, when it is in the crawler stage). The tree may never need another injection. We have had excellent results, achieving 80 to 90% reduction of scale populations and similar reduction of the honeydew and sooty mold problems. They’ll even pick the scale up and move them all over the tree. Some species prefer fruiting trees like orange, olive, or lemon. Pine needle scale is an armored scale that can have two generations per year. Some scale species lack males and the females reproduce without mating. Treatment Strategy. Some scale species lack males and the females reproduce without mating. This method is more expensive than others, but well worth it because of the success rate. Types of scale on citrus plants in the soft scale group are Caribbean Black Scale and Cottony Cushion Scale. When honeydew falls from a tree, leaves shouldbe inspected for live soft scales or mealybugs. In spring treatments, the dinotefuran gives quick  kill and the imidacloprid moves into the tree slowly and is present in the tree when egg hatch occurs and crawlers appear. The soil injected product may go into those branches and give more thorough control. Coffee scale is a major agricultural pest in coffee crops. Scales shoot a sweet substance called honeydew. Tree lichens appear on many trees. Depending on how old they are, their color can vary from brown to white. Nevertheless, both are unarmored scales and the treatment for them is the same. Dormant horticultural oil spray is the best treatment for Scale. Management. Nevertheless, both are unarmored scales and the treatment for them is the same. This scale's life cycle is slightly different that the cottony maple scale, with the eggs hatching slightly sooner in June or early July. Scales encrust bark at the crotches of twigs and on the lower surface of limbs. Some species can cause a great deal of damage to the foliage on which they feed, while others are harmless. They’ll even pick the scale up and move them all over the tree. Damage to an infected tree can include: A sign of a soft scale infestation is a coating of the sticky honeydew substance that they secrete on picnic tables, walkways, and parked cars below the infected tree. Non-pesticide control. Also, when this soft scale feeds on leaves and twigs, a large quantity of honeydew is excreted. Soil Application using Transtect . Note that dead scales can remain firmly attached to the plants. (The bumps are actually the insects.). Source: coniferconifer. The good news is that we have methods to control the problem, no matter what insect is to blame. Tree Scale Treatment. Armored scales and soft scales are the most common types (or families). Management. Whenthe bump itself can be squashed it is likely to be some othertype of scale. While it’s merely an annoyance on these surfaces, honeydew is detrimental to the trees and plants it coats. It’s natural and it doesn’t hurt the tree but will suffocate the insect. When scale numbers are low they may be rubbed or picked off of plants by hand. Jim Luzar, an Extension Educator with Purdue Extension shows you how to treat Tulip Poplar Tree Scale. Find the best Tree Disease Management near you on Yelp - see all Tree Disease Management open now. A tree that large is past the point where hand removal of the scale is possible or practical. Gloomy scale is an insect that protects its self with a small covering. It started to put out tiny leaf buds, so we rewarded it with a light misting of seaweed extract to encourage it along. Kermes overwinters as an obscure nymph on the branches of the oak tree and concentrated around leaf buds. Systemic insecticides applied by trunk or soil injection are the methods of choice  but are more costly than sprays. Although less commonly seen, gloomy scale can also infect grapes, native hollies, sweetgum, and mulberry. They tend to be considered either a fortunate blessing or a frustrating pest. Tree & ShrubInsect Control CONCENTRATE 12 Month LANDSCAPE FORMULA - Treats Twice as Much† ENVIRONMENTAL HAZARDS NOTE: When calling poison control center, have this product label accessible. The mature bodies are the easiest to spot, as the crawlers are pretty small—about the size of a pinhead. Controlling Citrus Scale. Common scales and their tree and shrub hosts are listed in Tables 1–3. Magnolia trees and bushes are susceptible to this scale, not to be confused with black scale, which refers to a very specific species (Saissetia oleae) that attacks citrus and olive trees. Fruit lecanium scale Fruit lecanium scale on twig Photo:Bugwood.org. Explore other popular Home Services near you from over 7 million businesses with over 142 million reviews and opinions from Yelpers. It is important to have an ant barrier of a 3-4 inch band with tangle-foot around the trunk of the citrus to help protect ants from invading citrus. Honeydew’s sweetness can also attract ants, bees, and flies. These pests are more susceptible to sprays at that specific time in their life cycle than at other periods. Asked May 15, 2016, 11:20 PM EDT. Treatment Strategy. Don’t have a shell, instead they secrete a cotton-like or waxy substance over their bodies for protection 5. Since they don’t move once they are attached to part of a plant, they can often go unnoticed until the tree starts to show signs of stress. Insecticidal Soaps are an excellent option for eliminating crawlers without resorting to the use of heavy-duty chemicals, but they don’t have much effect on the mature females. If you have a Cherry Tree, Cherry Laurel, Red Twig Dogwood, Privet, Lilac, or Euonymus in your landscaping, you should really learn what White Prunicola Scale is. However, the range of plants affected is extremely wide. Treatment of the scale is difficult, especially on large trees. These insects are more vulnerable to sprays at that particular time in their life cycle than at other periods, and that time is generally late summer. Early detection is critical for best management of infested trees. > Elm Scale Treatment. Dormant horticultural oil spray is the best treatment for Scale. Branches covered with small bumps. Citrus scale control can be accomplished with the use of pesticides, biological control via the introduction of indigenous parasitic wasps (Metaphycus luteolus, … Scale. Systemic insecticides have been shown to be effective against this insect if used with the right timing, and these treatments do not kill the beneficial insects. Magnolia scales are scale insects of various colors, from light to dark. Key Points. Dabbing individual pests with an alcohol-soaked cotton swab or neem-based leaf shine will also work when infestations are light. Some types of soft scales include lec… Last fall I treated my trees systemically with Bonide but I noticed today the leaves are sticky and shiny indicating the treatment didn't work. When utilizing any pesticide for controlling citrus scale, follow manufacturer’s instructions and spray the entire tree until it is dripping wet. Both use long, needle-like mouthparts to suck out sap from the host tree or plant. We also suggest that HOMEOWNERS drench the soil each fall with Bayer tree and shrub care or other brands of imidacloprid (like Bandit)  to "boost" the imidacloprid level in the tree. Parks Department managers know how to treat pine needle scale and prevent it from spreading to other plants. It’s easier for a strong, healthy tree to fight off diseases and pests, so proper maintenance is key. Common scales and their tree and shrub hosts are listed in Tables 1–3. In the past it's had a problem with scale insects, which I'm still finding here and there. Parasites generally provide control of many scale infestations. This scale is very prevalent on ash trees, sugar maples and oaks, but can infest many species of deciduous trees. A one year warranty is provided for these important treatments. Barkis usually intact beneath a scale. Sprays coating the underside of the leaves at this time can be effective, but thorough coverage is difficult. Crepe myrtle scale has no natural enemies here yet, so follow the Grumpy Gardener's tips for controlling this pest. Sprays are often ineffective and can worsen the condition if done in May and June, because beneficial predatory insects are killed while the adult scales are largely resistant to treatment by sprays.

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