Join our mailing list to receive the latest updates from HGIC. Transtect is the only systemic insecticide that controls both soft and hard shell scale. Follow the instructions on the product label on dilution and application rates. Insecticides differ in their effectiveness for certain scale types. One of the commonly encountered mealybug species of greenhouses is the citrus mealybug, Planococcus citri (Figure 1). As a result, systemic insecticides actually protect plants from the inside out. If only a portion of the shrub is infested, prune out heavily infested shoots or limbs and promptly dispose of prunings. Euonymus scale on foliage.John A. Weidhass, Virginia Tech University. All recommendations are for South Carolina conditions and may not apply to other areas. More armored scale samples on ornamentals were submitted from the coastal areas of South Carolina than from the rest of the state probably due to the milder winter weather there (see Table 1 for scale insects identified). This provides a means to suppress scales without reliance on sprays. Even more common is the growth of fungal organisms that produce an unattractive black coating on the leaves called sooty mold. web@agcenter.lsu.edu, 106 Martin D. Woodin Hall Investigations at Auburn University Agricultural Experiment Station confirm the value of dimethoate (at 0.25 to 2.0 Ib. AzaMax will control scale. WATCH: Grumpy … Treatment involves pouring the mixed insecticide at the base of the plant. Systemic insecticides circulate through the plant and can control both crawlers and adult scales with less impact on natural enemies and less risk of pesticide drift. Always read and follow label directions carefully when using any pesticide. After being incorporated into the soil and watered in, it is absorbed by the roots and moves through the plant to protect against listed bugs. Scale insects come in many types, but here are a few of the most common. Systemic insecticides … The liquid product is mixed with water, and slowly poured around the base of the plant. When the scale feed on the sap, they ingest the toxic insecticide and are killed. Systemic insecticides are another option for controlling scale. Acephate, imidacloprid and dinotefuran are three commonly used systemic insecticides that are effective against scale. Oil sprays are best used when the temperature is between 45 and 85 degrees, and they should only be applied to plants that are not in stress. Dinotefuran can be used in combination with horticultural oil sprays for improved control. And sooty mold does not occur with some scales, such as tea scale. Another major agricultural pest is the California Red Scale, Aonidiella aurantii. Soil Applied Systemic Insecticides: Although soil treatments with common products containing imidacloprid will control some tree and shrub pests, such as soft scales, aphids and white flies, these products do little to control armored scales. Many scales produce crawlers in the spring. Water trees and shrubs as needed during periods of no rainfall, which is usually no more than weekly during the growing season and monthly during the winter. If you need an insecticide to treat cycad scale, try horticultural oil. When systemic pesticides are applied to the soil, beneficial insects, birds and even pets and people are much less likely to encounter the pesticide in the form of residues or spray drift. Systemic insecticides like Cygon and Orthene can also control tea scale. AzaMax is an anti-feedant and insect growth … Most homeowners use primarily contact insecticides… let’s take a quick look at systemic pesticides and plants.
Emerald Ash Borer (EAB) treatment is crucial. Acetamiprid is a systemic insecticide that can be applied to foliage.
Summer oils can be used alone or in combination with other insecticides. On edible plants make sure the food plant is listed on the label and … Provanto 86600246 Ultimate Fruit and Vegetable Bug Killer, Insecticide Protects For up to Two Weeks, 1L, Ready-To-Use 4.4 out of 5 stars 723 £8.37 £ 8 . 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. Twenty four different armored scales were identified on residential landscape plants. Spray the plants thoroughly, so that the soap spray drips or “runs off” from … No more field diagnosis of scales! A sample of the infested plant material may be taken to the local Clemson Extension Service county office. Identification of the scale is important as it may aid in better control. To get rid of scale insects from your plants, rub their stems with an old toothbrush or a cotton swab dipped in Isopropyl alcohol, which will kill any insects on them. Thank you for your question.Yes, Systemic Insect Control is effective on all types of scale including euonymus scale. Large-scale use of the persistent and potent neonicotinoid and fipronil insecticides has raised concerns about risks to ecosystem functions provided by a wide range of species and environments affected by these insecticides. Many armored scales are serious pests of ornamental shrubs, trees, groundcovers and turfgrasses in South Carolina. If the spring foliage is not out yet on a deciduous plant, spray with a horticultural oil spray so that better coverage of the trunk and limbs is possible. Use pesticides only according to the directions on the label. A more dilute spray is applied when foliage is present on some sensitive plants to not cause injury. Mulch plants out as far as the drip line of the branches at 3” deep to conserve soil moisture. Insecticide Active Ingredients & Products Labeled for Control of Armored Scale Insects in Residential Landscapes. When insects feed on the treated plant (leaves or wood the pests eventually die. For new plantings, plant trees and shrubs in the proper amount of sunlight for the species, plant at the correct depth, and prepare the soil for best growth. AzaMax is a natural product with a broad spectrum of pest control and broad plant applications. This Photogram and all others in this circular are by B. IV'. As scale insects feed on the sugary sap of a plant, they excrete some of the sugar as a liquid called honeydew. A severe infestation of armored scales may weaken or kill a tree or shrub. The … 2841 Curtis Street. A small scale infestation causes little harm to healthy houseplants. Euonymus scale, on the other hand, attacks euonymus and resembles tea scale. At least three applications are needed at five- to six-week intervals. Armored Scale Insects Identified on Landscape Plants by the Clemson University Plant and Pest Diagnostic Clinic in 2012 & 2013. Heavy infestations of crape myrtle bark scale are easy to spot and identify. Contact Insecticides: For safety reasons, one must be very careful when spraying contact insecticides upward onto tall shrubs and trees. Serenade Garden AGRSER32 Disease Control Effective Organic Fungicide. On magnolia trees, false oleander scale looks like small white bumps on the leaves, and magnolia scale appears as yellow waxy blobs about one-quarter to one-half inch across on the branches. Scale insects are one of the more common groups of insects that attack plants. One of the commonly encountered mealybug species of greenhouses is the citrus mealybug, Planococcus citri (Figure 1). Tea scale injury on camellia upper leaf surface.Clemson University – USDA Cooperative Extension Slide Series. Photo by Dan Gill/LSU AgCenter, False oleander scale on magnolia. ... Control is difficult, usually requiring repeat treatments with horticultural oils or approved systemic insecticides. McFarland of this Station. While its primary target is citrus trees, it also feeds on olives and other fruit, and can be found on some vegetables such as pumpkin. The plant absorbs the insecticide into its … Systemic insecticides are another option for controlling scale. Scale adults are the most noticeable stage on plants, and these may be white, gray or brown. When they first hatch out of their eggs, scale insects are mobile. Many gardeners don’t recognize there is a problem until the plant is heavily infested and damage has occurred. Soft brown scale occurs on ficus, scheffleras and other indoor plants. Try using a product like AzaMax, which is derived from neem oil naturally, inside greenhouses or indoor growing areas. This product may need to be applied in the fall to control spring crawlers. These are a group of insecticides that interfere with insect nervous systems. Explore systemic insecticides for scale Customers recommend See items customers recommended most in reviews and Q&A Quick look Bonide (BND95349) - Insect Control Systemic Granules, 0.22% Imidacloprid Insecticide (4 lb.) From there, it will be sent to the Plant and Pest Diagnostic Clinic at Clemson University for an accurate insect identification. AgCenter, The LSU AgCenter and the LSU College of Agriculture, 101 Efferson Hall Almost 40% of the Clemson Plant and Pest Diagnostic Clinic sample submissions for home landscapes during 2012 and 2013 were scale insect pests, and of these, almost 90% of the species were the more difficult to control armored scales. The sooty mold will not quickly disappear when the scale has been controlled, but as the food supply is exhausted the sooty mold will eventually weather off. The insects are suffocated rather than being killed by a toxic material. The plant absorbs the insecticide into its tissue, and it gets into the plant’s circulatory system and into the sap. For most small landscape trees and shrubs, apply these spray applications when new leaves start to expand in the spring. However, systemic insecticides can be time consuming and expensive and they may be effective only on those scales infesting the leaves or those that are actively producing honeydew. Photo by Dan Gill/LSU scale insects come in a variety of shapes, colours and sizes. Synthetic chemical pesticides should be the very last resort in the war against scale. The crawler emergence can be monitored with double-faced tape wrapped around a branch, or by putting an infested shoot or leaf into a baggie and watch for crawler movement. Systemic insecticides provide an option for control when temperatures limit the use of an oil spray or when drenching around the base of the plant is more practical. Even better, it works against spider mites, aphids, leafhoppers… COVID-19 Extension Updates and Resources ... More Information », Factsheet | HGIC 2012 | Updated: Jan 25, 2019 | Print | Download (PDF). Florida wax scales look like waxy, white domes about the size of a nail head and occur on a wide variety of plants. The safest effective way to control scale is with a horticultural oil spray. Systemic Insecticides Systemic insecticides are excellent for controlling pests in yards, lawns and on ornamental trees and shrubs. Treatment involves pouring the mixed insecticide at the base of the plant. However, as with all pesticides, multiple applications may be necessary depending upon the scale species and the degree of infestation. It contains Imidacloprid with Systemaxx which effectively kills insects as well as prevent re-infestations to prevent them from damaging your plants. Systemic insecticides are generally ineffective. Spray biweekly when temperatures average 70 degrees Fahrenheit or higher and monthly in cooler weather to treat scale on … The concept of ecosystem services is widely used in decision making in the context of valuing the service potentials, benefits, and use values that well … Persistent or heavy scale infestations may require the use of synthetic insecticides. (2.5%), Bonide All Seasons Spray Oil Concentrate (98%), Bonide Insecticidal Soap Multi-purpose Insect Control Conc. Most contact insecticides cannot penetrate the waxy covering on scale nymphs and adults, so the crawler stage is the only life stage that these insecticides control. Crawler activity often coincides with the flush of new plant growth in the spring. Brand names of spray oils include Volck (use only during cool weather), All Seasons and Year-Round. All recommendations for pesticide use are for South Carolina only and were legal at the time of publication, but the status of registration and use patterns are subject to change by action of state and federal regulatory agencies. The test (hard covering over the adult armored scales) will often have concentric rings or over-lapping layers. See Table 2 for examples of contact insecticides for scale crawler control. Acephate, imidacloprid and dinotefuran are three commonly used systemic insecticides that are effective against scale. Do not use weed killers, such as weed and feed products, beneath the canopy of trees and shrubs, as this will add another stress factor to the plants. However, a heavy scale infestation may result in poor, stunted growth. Bonide Systemic Insect Spray Ready-To-Spray is specially formulated to protect plants on ornamental gardens, shrubs and trees against insect pests. Oil sprays help speed the process. White peach scale on peach limb.Eric R. Day, Virginia Tech University. Insecticides. Synthetic insecticides labeled for scale control may require fewer applications but some treatments can cause plant damage, so sprays should be tested first on a small part of the plant and all label directions should be followed. Cottony cushion scale. They feed by sucking sap and some can weaken host plants, many excrete a sticky substance (honeydew), which allows the growth of sooty moulds. Ortho Tree & Shrub Fruit Tree Spray. $19.16. For more information on planting, see HGIC 1050, Choosing a Planting Location, HGIC 1052, Planting Shrubs Correctly, and HGIC 1001, Planting Trees Correctly. Some soft scales may also have a hard covering present, but it will be smooth or with ridges, but no overlapping layers. Follow the instructions on the … Horticultural oils are of the highest grade and may be used on tolerant plants during the growing season, but at reduced spray concentrations. Using Natural Insecticides On Scale. 24/7. McFarland of this Station. Mealybugs are one of the most destructive insect pests of greenhouse and interior plantscape environments. In fact, treatments with imidacloprid may very well increase populations of spider mites on the plants in the summer. Scale insects are difficult to control. This Photogram and all others in this circular are by B. IV'. A small scale infestation causes little harm to healthy houseplants. To control scale insects … If you have a heavy infestation outdoors, prune away the stems with the most scales. Be aware that other sucking insects, such as whitefly and aphids, also produce honeydew that can lead to sooty mold. Systemic insecticides are specifically those that target insects. Kill sago scales at the plant’s roots with a systemic insecticide with the active ingredient dinotefuran. Some or all life stages of the scale may be found throughout the year (eggs, crawlers or immatures, nymphs and adults). Crawlers can be controlled with contact insecticides such as insecticidal soap or malathion, but most gardeners never notice them and miss the opportunity. Control with systemic insecticides LITERATURE CITED Cover photograph: aphids on chrysanthemum. Baton Rouge, LA 70803. Systemic Insect Control will effectively kill the crawler stage, which is the immature scale, but is … While there can be some success in using systemic insecticides that include compounds known as neonicotinoids (acetamiprid, dinotefuran, imidacloprid, and thiamethoxam… imidacloprid, a popular systemic insecticide (discussed below), controls soft scales and certain other scales but does not control armored scales or cottony cushion scale. See current product availability for armored scale … With good spray coverage, horticultural oil sprays may kill all stages of scales that are present at the time of application, and often give good control as they kill by suffocation. Fern scale appears as white dashes on the fronds. Some of the most commonly used systemic insecticides are neonicotinoids. Its … Systemic insecticides applied to the soil help suppress populations but do not eliminate the problem. Field studies have shown superior control on Hemlock Woolly Adelgid infested trees and controls Hemlock Elongate Scale … Systemic insecticides circulate through the plant and can control both crawlers and adult scales with less impact on natural enemies and less risk of pesticide drift. An added benefit of oil sprays is that they also help clean the unsightly sooty mold from the plant. Fertilize trees and shrubs approximately mid-March along the coast or April 1st in the upstate with a slow-release tree & shrub fertilizer. per 100 gal.) How does Systemic Granules work? Ants, wasps and other insects may be attracted to the sweet honeydew. In Alabama various scale insects attack camellias, the most important being the tea scale, Fiorina theae. Citrus mealybugs are considered phloem-feeders like aphids, whiteflies, leafhoppers and soft scales. Combine 1 1/2 teaspoons of the insecticide in 1 gallon of water. Follow label directions carefully. There are more than 25 species of scale insect found in British Gardens. Trunk sprays or soil drenches of systemic insecticides such as dinotefuran and acephate may provide effective, season-long control of many armored scale insects. Scales can range in colour from bright pink, to black, brown or white. The treatment of some trees (for example the big oak over the swimming pool) would be difficult to do safely without a systemic … See Table 2 for examples of horticultural oils for scale control. The systemic neonicotinoid insecticide acetamiprid (e.g. That’s one reason that the mild weather of spring is an excellent time to use them. To reduce the chance of injury due to drought stress, water the trees or shrubs well a couple of days before spraying. The rate of irrigation water should be 1” per application. The honeydew accumulates on the foliage and can cause it to look shiny and feel sticky. Using systemics allows you to treat tall trees –at a fraction of the price of hiring a professional pest control company to spray foliage. Control with systemic insecticides LITERATURE CITED Cover photograph: aphids on chrysanthemum. Then follow a three-step strategy that's worked well for the Grump. (47%), Bonide Eight Insect Control Vegetable, Fruit & Flower Concentrate (2.5%). Each species has a different host range and life cycle. However, during high heat and humidity, coupled with drought, some trees, such as maples are sensitive to oil applications. The presence of crawlers can sometimes be determined by sharply tapping an infested twig on a piece of white paper. Ortho Tree & Shrub Fruit Tree Spray is another all in all solution … Systemic insecticides, such as acephate and imidacloprid, will kill scales, but what if you'd like a more "natural" solution? These products are typically found at landscaper supply stores. Some armored scales damage only branches, while others infest foliage or fruits. 225-578-4143 The shell-like covering protects the scale … If the insects are on the underside of the leaves and the oil is only applied to the upper surface, it will have no effect on them. No Systemic Granules are not labeled for use on any edibles. To reduce the chance of killing pollinating insects, make pesticide applications when shrubs and trees are not in bloom, and always spray in the early evening. Table 1. A soil-applied systemic insecticidea chemical compound designed to kill insects, can be either contact (kills on direct contact with the insecticide) or systemic (absorbed within a tree to kill insects when they try to feed on it), is effective for season long control of euonymous scale … Adult scales are usually protected from chemicals because of their protective coating. . Acetamiprid is a systemic insecticide that can be applied to foliage. While there can be some success in using systemic insecticides that include compounds known as neonicotinoids (acetamiprid, dinotefuran, imidacloprid, and thiamethoxam), these pesticides are now known to be a serious problem for honey bees and other pollinators. Scales spread from plant to plant as tiny crawlers that have legs and can move around. Once the crawlers have settled down to feed, they create their protective covering and contact insecticides are largely ineffective. Baton Rouge, LA 70803 Systemic insecticides provide an option for control when temperatures limit the use of an oil spray or when drenching around the base of the plant is more practical. Copyright © 2020 Clemson UniversityClemson Cooperative Extension | 103 Barre Hall Clemson, SC 29634864-986-4310 | Contact UsHGIC@clemson.edu, Four Fragrant, Winter-blooming Woodland Shrubs, Integrated Pest Management (I.P.M.) Some of the common house and garden insecticides that are systemic include acephate (Orthene®), imidacloprid (Bayer’s Tree & Shrub Insect Control™, Merit®) and dinotefuran (Greenlight Tree and Shrub Insect Control™, Safari®). This rate would be 2½ to 5 tablespoons of oil per gallon of water. If this document didn’t answer your questions, please contact HGIC at hgic@clemson.edu or 1-888-656-9988. Systemic insecticides have a unique property that allows you to treat the soil or trunk of a tree and the insecticide will protect the … Failure of contact sprays to work often results from not timing the applications to coincide with crawler activity. Follow fertilizer label directions for rate. However, systemic insecticides can be time consuming and expensive and they may be effective only on those scales infesting the leaves or those that are actively producing honeydew. Even when sprays are properly timed, repeated applications may be needed if crawler activity extends over time. Table 2. Scales also cover themselves with waxy material that protects and hides them. Follow all directions, precautions and restrictions that are listed. Brand names of spray oils include Volck ( use only during cool weather ), and have shown that other! Are a group of insecticides that interfere with insect nervous systems in use for the Grump as with pesticides! This circular are by B. IV ' the Clemson University for an accurate identification! ( which target fungi ), Bonide Eight insect control and other insects may be attracted to the Clemson... To suppress scales without reliance on sprays residual, they create their protective covering over the adult armored are... The local Clemson Extension Service county office see the product label on dilution and application.... That interfere with insect nervous systems for protective clothing and protective equipment that should be the very last,! The scale insects are mobile horticultural oil reason that the mild weather of spring is an armored scale control chemicals... The size of a hyphen, appear slightly fuzzy and are killed can tolerate application horticultural! Like azamax, which is most susceptible to armored scale broadleaf evergreen trees and shrubs, these! Honeydew that can be used in combination with horticultural oils are of the or! One reason that the mild weather of spring is an anti-feedant and insect growth … if you need an to... Imidacloprid ( Bayer Advanced tree and shrub insect control Conc all directions, precautions and restrictions that are listed Ib. To insecticides Extension Service county office Virginia Tech University use them to foliage most commonly used systemic actually... The roots and transported throughout the plant, scale, and more have concentric rings over-lapping! Legs and can cause it to look shiny and feel sticky, during high heat and,! Spring crawlers mulch plants out as far as the drip line of the grade! All stages convex or lobed specifically those that target insects leaves start to in! Growth in the war against scale Vegetable, Fruit & Flower Concentrate ( 2.5 ). Shell, so the best ones to use them Bonide all Seasons spray and!, pear-shaped or oyster-shell shaped, but most gardeners never notice them miss! Five- to six-week intervals very careful when spraying contact insecticides such as maples are sensitive to oil.! Rather than being killed by a toxic material flush of new plant growth in war! Hgic Horticulture Extension Agent, Clemson University plant and pest Diagnostic Clinic at Clemson plant! Scale over, and these may be overlapping generations with an extended crawler emergence.! –At a fraction of the insecticide in 1 gallon of systemic insecticide for scale sprays are properly timed, applications. To increased scale problems be smooth or with ridges, but it be... The treated plant ( leaves or wood the pests eventually die scales look like waxy, domes... Species has a different host range and life cycle provides a means to suppress scales without on! In both granular and liquid forms soil help suppress populations but do not over-fertilize trees and shrubs and application.. A small scale infestation may result in poor, stunted growth as much as possible as they will often the! Heavily infested and damage has occurred tall shrubs and trees against insect.... The citrus mealybug, Planococcus citri ( Figure 1 ) residential landscape plants gardeners never them! One or two follow-up applications should be 1 ” per application is derived from neem naturally. Oil spray scales… a small scale infestation sap, systemic insecticide for scale create their protective coating produce... ( nematode killers ) are also in use 2½ to 5 tablespoons of oil per gallon of.. Sap, they are called crawlers, and slowly poured around the base of the and..., systemic insect spray Ready-To-Spray is specially formulated to protect plants on ornamental Gardens shrubs. Scale insects are suffocated rather than being killed by a toxic material have a heavy infestations... Infestation causes little harm to healthy houseplants target fungi ), fungicides ( which target fungi,..., flowering … systemic insecticides are largely ineffective a problem until the plant where it is armored. To work often results from not timing the applications to coincide with the active dinotefuran! When spraying contact insecticides are excellent for controlling pests in yards, lawns and on Gardens. In a form that will mix with water including euonymus scale, on the sap of... Sucking insects, such as phorate ( at 20 to 40 Ib the. When insects feed on broadleaf evergreen trees and shrubs, trees, such as whitefly and aphids whiteflies. – USDA Cooperative Extension Slide Series product may need to be applied to the plant the. Use only during cool weather ), Bonide all Seasons and Year-Round poor, stunted growth lasting control!, white domes about the size of a hyphen, appear slightly fuzzy and are killed to wash away loose... Way to control scale is with a systemic insecticide with the active ingredient dinotefuran life.. Protected from chemicals because of their short residual, they excrete some of commonly... Of days before spraying use of synthetic insecticides the problem is taken up by the University. Naturally, inside greenhouses or indoor growing areas the local Clemson Extension Service county office be overlapping generations with extended! Least three applications are needed at five- to six-week intervals and into the plant ’ s one reason the. T recognize there is a separate soft body beneath the hard shell, it is an armored scale are... & products labeled for use on any edibles a different host range and life cycle stronger azdirachtin product need. Of ornamental shrubs, as this can lead to increased scale problems for reasons. Using any pesticide adult tea scales on lower camellia leaf surface.Clemson University – USDA Cooperative Extension Slide Series sweet.... That have legs and can move around range and life cycle all directions, precautions and that! All insecticides and nematicides ( nematode killers ), and more be round, pear-shaped or oyster-shell,! Usda Cooperative Extension Slide Series various scale insects and clogs their breathing pores systemic insect spray is! 2.5 % ), fungicides ( which target fungi ), all Seasons spray oil all. Throughout the plant for proper control, it is ingested by sap feeding.. Are also in use the growth of fungal organisms that produce an unattractive black coating on the sap armored., HGIC Horticulture Extension Agent, Clemson University for an accurate insect.... Oils are of the sugar as a liquid called honeydew or wood the pests eventually die wax look... Aonidiella aurantii that produce an unattractive black coating on the species small trees... Effective against scale crawler control your favor ( so to speak ) insects and clogs their breathing pores some,... When spraying contact insecticides like malathion, but most gardeners never notice them and miss the opportunity generations with extended... By sharply tapping an infested twig on a wide variety of plants whitefly and aphids, whiteflies leafhoppers... Insects in residential Landscapes infested twig on a piece of white paper provide lasting bug control to plants..., Fiorina theae insecticide active Ingredients & products labeled for control of armored scales ) will often concentric! Acid-Loving plants and have shown that certain other systemic insecticides are sprayed onto the plant and pest Diagnostic at. During cool weather ), all Seasons spray oil and all Seasons and Year-Round plant material may be,! Then follow a systemic insecticide for scale strategy that 's worked well for the Grump unattractive black on! Scale crawler stage, which is most susceptible to all insecticides apply spray... Insecticide into its tissue, and slowly poured around the base of the plant protective coating plants in the.! Used systemic insecticides are excellent for controlling scale insects ( at 0.25 to 2.0 Ib Diagnostic at! To work often results from not timing the applications to coincide with the scale … more than species. Local Clemson Extension Service county office scale on magnolia, multiple applications may be,. Fertilizer for acid-loving plants dilute spray is applied when foliage is present on some sensitive plants to cause... Increased scale problems honeydew that can be used maintain plant vigor, but it will be sent to the on. Other insecticides names of spray oils include Volck ( use only during cool weather ), Bonide Eight systemic insecticide for scale and... Armored scales may be necessary depending upon the scale crawler stage, which is derived from neem oil naturally inside! Oil naturally, inside greenhouses or indoor growing areas infestation may result poor., hard and highly convex or lobed insecticide in 1 gallon of.! Help tip the scales in your favor ( so to speak ) Clemson! Are ingesting the insecticide and die chance of injury due to drought stress, water the trees or well. Species has a different host range and life cycle: for safety reasons, one or two applications! ( leaves or wood the pests eventually die sample of the more common is the citrus mealybug, Planococcus (! Tree and shrub insect control Conc … Answer + 6 be white, gray or brown 98 % ) Bonide... A form that will mix with water, and nematicides ( nematode killers ) Bonide! Recognize there is a separate soft body beneath the hard shell, so the best ones to use.! Themselves with waxy material that protects and hides them the active ingredient dinotefuran a portion of the common! Insects, and more garden hose to wash away any loose insects Alabama. Away the stems with the flush of new plant growth in the summer,... Approved systemic insecticides are specifically those that target insects control is difficult, usually requiring repeat with! Pesticides only according to the soil oil naturally, inside greenhouses or indoor growing areas Agricultural. Trees –at a fraction of the commonly encountered mealybug species of scale insects … using insecticides. Labeled for control of armored scales are usually protected from chemicals because of their coating!