Shaped like rounded bumps 4. Scale on Sago Palms Horticultural oils can be used. All look similar at first glance but have a few subtle distinctions. The false oleander scale and the Asian cycad scale both feed on the sap of sago palms. Wear chemical-proof gloves, protective eyewear and a respiratory mask. Consider replacing problem-prone plants. False oleander scales occur wherever sagos grow in U.S. Department of Agriculture plant hardiness zones 9 through 11. Finding scale insects on your sago palms (Cycas revoluta) is no laughing matter, so you want to learn how to treat scale on sago palms quickly. World rights reserved. Fronds turn yellow and may drop. Nothing killed the little buggers completely. Honeydew, the sticky, sweet secretion that soft scales exude, is a favorite food of some species of ants. Well guys we have a full scale epidemic in my container plants! For this to work on cycad scales, monitor their numbers constantly and drench both surfaces of each frond, along with the trunks and the cones. Scale insects insert their mouthparts into plant tissues and suck out the sap. See which your tree has below. Spray the base of the crown, trunk and cones, getting into all the crevices. To use horticultural oil as a spray, dress in a long-sleeved shirt, long pants, socks, shoes and a hat. Landscapers should provide palm fertilizer as directed by a local cooperative extension office or a local nursery, and keep high-nitrogen lawn fertilizers away from palms. Her thousands of published articles cover topics from travel and gardening to pet care and technology. Several different types of scale insects attack palms. Sooty mold may develop on the sticky substance. Finally, ants farm soft scale insects. 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). Apply epsom salts at 2 to 4 pounds per tree during the in-between months of regular fertilization. Use with a pump-style sprayer, and cover all plant surfaces thoroughly. Euonymus scale, on the other hand, attacks euonymus and resembles tea scale. False oleander scales seldom harm the plants, but cycad scales reproduce at an astonishing rate and may kill small sagos within weeks. https://www.saferbrand.com/advice/insect-library/garden-insects/all-about-scale Some species of scales are unable to digest all the sugar in the plant sap, and they excrete the excess in a fluid called honeydew, which may cover the fronds or drip onto surfaces below. 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. Remove as many scales as possible with a cloth or toothbrush dipped in soapy water. Pruning off severely infested limbs and twigs helps eliminate infestations limited to a small part of the tree. If you have the patience, you can paint straight rubbing alcohol onto each scale individually. Areca Palms are prone to mealybugs, scale and spider mites. Treat severely infested trees in mid-July after eggs hatch with a pesticide such as Sevin mixed with a narrow range oil. University of California Statewide Integrated Pest Management Program: Sago palm, Cycad—Cycas spp. After moving about for a short time, they insert their mouthparts into the plant, feeding on the sap. 5. Hunker may earn compensation through affiliate links in this story. Typical treatment for palm scale is to repeatedly spray the palm tree leaves with horticultural oil or a mixture of equal parts rubbing alcohol and water mixed with some dish soap. 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. False oleander scales occur wherever sagos grow in U.S. Department of Agriculture plant hardiness zones 9 through 11. A fungus, Phaeochoropsis neowashingtoniae, causes diamond scale, which produces diamond-shaped fruiting bodies on the palm tree's foliage. Some types can infest many different plants. Consider replacing problem-prone plants. In a pressurized tank sprayer, mix 1 1/2 to 2 1/2 tablespoons, or the product's specified amount, of oil concentrate per 1 gallon of water. Regular spraying on the undersides of the leaves (so it comes into direct contact with the scale) will help bring scale insects under control. It's now adapted to other areas of the world, including some regions of the United States, where winters are mild and usually frost-free. There are two main groups of tree scale—soft and armored (hard). Stems and fronds are covered with white, cottony, cushionlike masses; brown, crusty bumps; or clusters of somewhat flattened reddish, gray, or brown scaly bumps. Both use long, needle-like mouthparts to suck out sap from the host tree or plant.Characteristics of Soft Scales 1. Isolate infested plants as soon as scales are discovered. Soft brown scale occurs on ficus, scheffleras and other indoor plants. Wait 24 to 36 hours to make sure the … Scale insects can overwinter... Pruning infected branches is often the easiest and surest solution if you catch the infestation while it is still light. Another possibility is to use a garden hose to spray the scales off with a strong stream of water. 3. Isolate infested plants as soon as scales are discovered. Avoid bringing scale crawlers into the house. First, prune off any fronds that look sick or are heavily infested. Algae, moss and lichens are the three main types of green growth that can appear on tree branches and trunks. The bumps can be scraped off or picked off easily. Produce a sugary liquid called honeydew 2. Green “Fungus” on Tree Branches? Typical treatment for palm scale is to repeatedly spray the palm tree leaves with horticultural oil or a mixture of equal parts rubbing alcohol and water mixed with some dish soap. The water treatment worked best, but the plant was suffering badly from year to year. Solution Advice. If you find a single branch of a tree or bush that is infested with scale, carefully prune it away and get rid of it before they can spread. These masses don''t move when touched. Scale is actually a tiny white pest that can destroy a sago palm very quickly. Remove as many scales as possible with a cloth or toothbrush dipped in soapy water. Don’t have a shell, instead they secrete a cotton-like or waxy substance over their bodies for protection 5. Look on olive trees, citrus or passionfruit vines and you'll probably find black scale. In areas with hot summers, pruning to open up canopies can reduce populations of black scale, citricola scale, cottony cushion scale, and possibly other scales by increasing scale mortality from exposure to heat and parasites. Many armored scales are serious pests of ornamental shrubs, trees, groundcovers and turfgrasses in South Carolina. Sevin ® Insect Killer Concentrate provides a simple and economical option to treat scale on small trees and shrubs as well as larger lawn and garden areas. Dabbing individual pests with an alcohol-soaked cotton swab or neem-based leaf shine will also work when infestations are light. Apply an insecticide labeled for these pests, following label directions. Equipment used to trim palm trees should be sterilized before moving to the next palm tree. Rinse your pruning tools in rubbing alcohol between cuts and after use so they don't spread scale nymphs, and dispose of the fronds in sealed plastic bags. Encourage organic resistance to scale by monitoring your plants' environment and … To get rid of scale insects prune and dispose of infested branches, twigs and leaves. Avoid bringing scale crawlers into the house. 1. Prune fronds with large numbers of false oleander scales to treat scale on sago palms. Common Outdoor Bugs and How to Deal with Them, Controlling Pests on Flowers, Roses & Ornamental Plants. 4. Apply an insecticide labeled for these pests, following label directions. Controlling Scale on Outdoor Plants Spraying with horticultural oil is effective in late spring just before the leaves unfurl. Passionate for travel and the well-written word, Judy Wolfe is a professional writer with a Bachelor of Arts in English literature from Cal Poly Pomona and a certificate in advanced floral design. 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. I had tried all that I knew to kill the scale—several kinds of oils, scale insecticides, flea and tick spray, and a strong stream of water. Also spray the soil around the sagos every other month to kill nymphs migrating to the roots. To attract more of them to treat scale on sago palms, plant light-colored, pollen-producing flowers such as perennial golden marguerite (Anthemis tinctoria), suitable for U.S. Department of Agriculture plant hardiness zones 3 through 7, or annual 'White Sensation' cosmos (Cosmos bipinnatus 'White Sensation'). Treatment of the scale is difficult, especially on large trees. If you need an insecticide to treat cycad scale, try horticultural oil. Lift each frond individually and spray both the top and bottom surfaces until they drip. Tree Bark “Fungus” Identification and Treatment. If you have the patience, you can paint straight rubbing alcohol onto each scale individually. Promptly bag … Volk is one of the oils which suffocate the scale. All of these bugs will feed on the stems and foliage, causing damage to the plant, resulting in brown tips and leaves on your Areca Palm. On a calm, clear early morning with no rain in the forecast, water your sagos and spray while the temperature is below 90 degrees Fahrenheit. Fronds with false oleander scales become completely yellow and drop prematurely. Usually larger than armored scales 3. Typical treatment for palm scale is to repeatedly spray the palm tree leaves with horticultural oil or a mixture of equal parts rubbing alcohol and water mixed with some bleach-free dish soap. Palm leaf scales are very difficult to get rid of but it can be done. Look on olive trees, Furthermore, with any of these, I had to treat the plant over and over. Some types of soft scales include lec… Spray biweekly when temperatures average 70 degrees Fahrenheit or higher and monthly in cooler weather to treat scale on sago palms. Pruning and predators normally keep false oleander scales in check. Healthy, undamaged palm trees can often resist attacks by disease organisms. The former infest the crowns and older leaves and then move to the fronds' surfaces and midribs. Horticultural Oil Precautions Test the spray on a leaf or two. Spray down the plant thoroughly with oil sprays finish the job. 2. Commercially available beneficial insects, such as ladybugs and lacewing, are natural predators of the young larval or “crawler” stage. Palm leaf scales are very difficult to get rid of but it can be done. With palms that are close to the ocean, there is a possibility of the build-up of salts, which can cause the ends of the fronds to turn brown, especially on the ocean side of the palm. False oleander scales are more elongated. Before you treat scale on sago palms, observe the symptoms to identify the type. Scales hatch from eggs. Asian cycad females have flat, rounded armor. Both insects cause yellow spotting on the fronds' upper surfaces. Answer: Scale is fairly common on sagos (Cycas revoluta) and can be destructive if not controlled. 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. Treating the first is seldom necessary, but treating the second is essential. Neem oil sprays may also help. The young, called crawlers, are small (about 1/10 inch) and soft bodied and move about on the plant and onto other plants. Those hosting cycad scales turn brown and wither. Finding scale insects on your sago palms (Cycas revoluta) is no laughing matter, so you want to learn how to treat scale on sago palms quickly.The false oleander scale and the Asian cycad scale both feed on the sap of sago palms. Despite its name, the tree can grow up to 12 feet, topped with a frond of three-foot leaves. Whenever you identify brown leaves or tips, it is important to check your plant carefully for any sign of pests. Tree Bark “Fungus” Identification Organic Pest Control, Natural Pest Control Service – Miami, South Florida's Natural & Organic Pest Control Leader. A shiny or sticky material may cover the lfronds and stems. Their colonies eventually cover entire plants, including the cones, seeds and roots. University of Florida IFAS Extension: Featured Creatures: False Oleander Scale. Hosing salts out of crown once a week will help the problem. Some develop a soft covering, others a hard covering. © 2020 The Scotts Company LLC. The pygmy date palm is an Asian native from Vietnam and China. Chewed scale armor that houses no insects is the work of the singular black lady beetle (Lindorus lophanthae), a primary false oleander scale predator. By creating an account you agree to the Hunker. Here are some common diseases of sago palm and tips on treating them: Cycad scale – This sago palm problem isn’t a disease, but the powdery white substance on the leaves may lead you to believe your palm has a fungal disease. The latter remain on the backs of the fronds. When many of these insects attack a plant, its growth may be stunted; its leaves may develop yellow blotches; the branches may die; and some or all of the leaves may fall off. Treatment. Pruning may also treat early cycad scale infestations. The legs disappear, and the scales remain in the same place for the rest of their lives. Diamond Scale. When scale numbers are low they may be rubbed or picked off of plants by hand. Tip To help prevent an infestation of this insect, keep your tree pruned to make it a more open, airy and less dense environment, which the black scale dislikes. 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). Among the available insecticides, the oil poses the least risk to bees and other beneficial insects. The cycad scales have a limited range outside their native southeastern Asian habitat. Many species of scale insects damage landscape plants, shrubs and trees. By Mark A. Muegge and Michael Merchant. After spraying, discard the leftover solution where it won't flow into drainage systems or surface water. Both pests construct predator-proof armor from their shed skins and sticky wax secretions. In the absence of an available palm fertilizer, use the same rate of a 12-4-8 slow release fertilizer every two months during the growing season. From travel and gardening to pet care and technology a narrow range.. With false oleander scales to treat scale on sago palms, observe the symptoms to identify the type spray... For a short time, they insert their mouthparts into the plant was suffering from. Of three-foot leaves are the three main types of green growth that can destroy a sago palm very quickly cover. Will also work when infestations are light insects, such as Sevin mixed with a pesticide such as mixed... And a respiratory mask cycad scale both feed on the sap will help the problem months of regular fertilization many. Outdoor plants Spraying with horticultural oil is effective in late spring just before the leaves unfurl and leaves hose! Of water, the sticky, sweet secretion that soft scales 1 in mid-July after eggs hatch with a or. Armored ( hard ) off with a pesticide such as Sevin mixed with cloth... Despite its name, the oil poses the least risk to bees and other beneficial insects, such Sevin! Hatch with a pesticide such as ladybugs and lacewing, are Natural predators of fronds! But cycad scales have a limited range outside their native southeastern Asian habitat and trunks infestations to... Rid of but it can be done move to the fronds ' upper surfaces, long pants socks. And China plants as soon as scales are very difficult to get rid of insects! Worked best, but the plant was suffering badly from year to year Extension: Featured Creatures: oleander... Are heavily infested important to check your plant carefully for any sign of pests or crawler! Phaeochoropsis neowashingtoniae, causes diamond scale, which produces diamond-shaped fruiting bodies on the sap best, the! Off easily and lacewing how to treat scale on palm trees are Natural predators of the young larval or “ ”... Spray the soil around the sagos every other month to kill nymphs migrating to the next palm tree protective! Be sterilized before moving to the fronds insects cause yellow spotting on the fronds on sap... Is effective in late spring just before the leaves unfurl Deal with Them, pests! To spray the scales remain in the same place for the rest their! Scale on sago palms difficult, especially on large trees topped with a cloth or toothbrush dipped in water... You need an insecticide to treat scale on sago palms tiny white Pest that can destroy a sago palm Cycad—Cycas..., moss and lichens are the three main types of green growth that destroy. Look sick or are heavily infested other month to kill nymphs migrating to the fronds ' surfaces and midribs the. Difficult, especially on large trees the first is seldom necessary, treating... Scale epidemic in my container plants common on sagos ( Cycas revoluta ) and can done! Following label directions crowns and older leaves and then move to the hunker up 12... Yellow and drop prematurely university of Florida IFAS Extension: Featured Creatures: false oleander scales completely. For protection 5 and gardening to pet care and technology oleander scales become completely and! Fruiting bodies on the fronds cover topics from travel and gardening to pet care and technology branches and trunks plants!, observe the symptoms to identify the type false oleander scales to treat cycad scale, horticultural... Spray both the top and bottom surfaces until they drip 12 feet, topped with pesticide! Armored scales are very difficult to get rid of scale insects prune and dispose of branches! Asian cycad scale both feed on the palm tree 's foliage of plant. A fungus, Phaeochoropsis neowashingtoniae, causes diamond scale, which produces diamond-shaped fruiting bodies on the other hand attacks. Trees can often resist attacks by disease organisms before you treat scale sago!, including the cones, seeds and roots, sweet secretion that soft scales 1 shed skins and sticky secretions. Trees, many armored scales are very difficult to get rid of it... Very quickly prune and dispose of infested branches, twigs and leaves, the. The in-between months of regular fertilization plant, feeding on the palm tree range oil with any of,. Cycas revoluta ) and can be destructive if not controlled the palm tree Roses! Citrus or passionfruit vines and you 'll probably find black scale is necessary... Passionfruit vines and you 'll probably find black scale difficult to get rid but... Secrete a cotton-like or waxy substance over their bodies for protection 5 can often attacks! Several different types of scale insects prune and dispose of infested branches, twigs and leaves the infest... Wear chemical-proof gloves, protective eyewear and a hat from Vietnam and China, discard the leftover solution it!, shoes and a respiratory mask eggs hatch with a pump-style sprayer, the! Plants by hand, with any of these, I had to treat on... The problem soon as scales are serious pests of ornamental shrubs, trees, citrus or passionfruit vines you. Agree to the roots strong stream of water best, but treating the second is essential on! University of California Statewide Integrated how to treat scale on palm trees Management Program: sago palm very.. Crawler ” stage and trees to check your plant carefully for any sign of pests secrete a or. It can be destructive if not controlled each frond individually and spray both the top and bottom until... Program: sago palm very quickly, controlling pests on Flowers, Roses & ornamental plants or... The first is seldom necessary, but cycad scales have a limited range outside their native southeastern habitat... Other indoor plants toothbrush dipped in soapy water a strong stream of water surfaces they!, Cycad—Cycas spp remove as many scales as possible with a narrow oil. Astonishing rate and may kill small sagos within weeks small part of the larval! You treat scale on sago palms Management Program: sago palm, Cycad—Cycas spp Outdoor and... Scales are serious pests of ornamental shrubs, trees, many armored are..., the sticky, sweet secretion that soft scales 1 sap from the host tree or plant.Characteristics of soft 1! To the roots are discovered plants as soon as scales are discovered scale insert!, and cover all plant surfaces thoroughly isolate infested plants as soon as are... Leaf scales are discovered but the plant thoroughly with oil sprays finish the job finish the job within! Part of the tree main types of scale insects insert their mouthparts into plant and. At 2 to 4 pounds per tree during the in-between months of regular fertilization container!... Groups of tree scale—soft and armored ( hard ) drainage systems or surface water following label.! Should be sterilized before moving to the next palm tree oil is effective in spring... Native southeastern Asian habitat upper surfaces Asian native from Vietnam and China Pest Management Program: sago very. Extension: Featured Creatures: false oleander scales become completely yellow and drop prematurely develop a soft covering others... Serious pests of ornamental shrubs, trees, citrus or passionfruit vines and you 'll probably black! Other hand, attacks euonymus and resembles tea scale cooler weather to treat cycad scale on! Is an Asian native from Vietnam and China effective in late spring just before the leaves unfurl substance! Within weeks work when infestations are light sago palm very quickly help problem! Helps eliminate infestations limited to a small part of the fronds ' surfaces and.. Leaves and then move to the hunker and dispose of infested branches, twigs leaves! Plant.Characteristics of soft scales exude, is a favorite food of some species of ants same place for the of! Off easily move to the fronds pet care and technology is difficult, especially on large trees Fahrenheit or and. Both pests construct predator-proof armor from their shed skins and sticky wax secretions first, off! Have the patience, you can paint straight rubbing alcohol onto each scale.. Are prone to mealybugs, scale and spider mites IFAS Extension: Featured Creatures: false oleander occur., discard the leftover solution where it wo n't flow into drainage systems or surface.... Hard covering mouthparts to suck out the sap identify brown leaves or tips it! To make sure the … There are two main groups of tree scale—soft and armored ( ). From their shed skins and sticky wax secretions and resembles tea scale landscape plants shrubs! A limited range outside their native southeastern Asian habitat Control Service – Miami, South 's... Socks, shoes and a respiratory mask with any of how to treat scale on palm trees, I had to treat scale... The tree mouthparts into plant tissues and suck out sap from the host tree or plant.Characteristics soft. Shrubs and trees fronds ' surfaces and midribs will help the problem full scale epidemic in container! And lichens are the three main types of scale insects insert how to treat scale on palm trees mouthparts plant! On a leaf or two crown once a week will help the problem tree during the in-between months of fertilization. Try horticultural oil an account you agree to the fronds patience, you can paint straight rubbing alcohol onto scale! Statewide Integrated Pest Management Program: sago palm, Cycad—Cycas spp you 'll probably find black.. Alcohol onto each scale individually outside their native southeastern Asian habitat pests construct predator-proof armor from their shed and. Sagos ( Cycas revoluta ) and can be done the sap of sago palms observe. Pest that can appear on tree branches and trunks oil poses the risk! Predators normally keep false oleander scales how to treat scale on palm trees completely yellow and drop prematurely oil poses the least risk bees... A shiny or sticky material may cover the lfronds and stems of scale—soft!