On bur oak, the scales … Kermes Scale Life Cycle. Lecanium scale is a group of common soft scale insects that feed on the sap from shade trees and woody ornamentals. Common scales and their tree and shrub hosts are listed in Tables 1–3. Replied February 13, 2015, 11:29 AM EST. Answered by KevO Generally, they are divided into two categories, armored (hard) and soft scale. Armored scales and soft scales are the most common types (or families). KevO. A severe scale infestation delays the leafing out of deciduous oaks … Coffee scale is a major agricultural pest in coffee crops. According to Illinois … Northern Red Oaks often become infested with Kermes scale, in particular, and are projected to be subject to heavy infestation here in … Pin oak kermes scale and Bur oak kermes scale are the most common species found on oak trees. Branches infected with scale may appear damaged, and, without treatment, can die and fall from the tree. Psuedococcidae Some scale insects in the genus Parthenolecanium are commonly called lecanium scales because at one time they were included in the genus Lecanium.Female oak lecanium scales, Parthenolecanium quercifex, are up to 1/4 inch in diameter. It is completely infested, and shedding leaves rapidly so we're concerned. Pinning down kermes scale life cycle is a difficult task. Scale insects belong to a large group of sucking insects that attack a wide variety of trees and shrubs. Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and … Treating kermes scale on plants is attained by a variety of methods. Kermes Scale treatment. Kermes scale is an insect pest of red and white oak trees, as well as pin and Gambrel oaks. The pin oak Kermes scale starts feeding in the spring (usually April to May) as nymphs, or “teenagers”. Red and Pin oak Kermes scale have the same life cycle, while the bur oak scale is different. Kermes scale are aggressive sap-sucking pests that can cause significant damage in oak trees. There are a few ways you can get rid of scale on branches. Dead leaves and twigs on affected trees may remain throughout the winter, giving the tree an unsightly appearance; however, don’t confuse this with the natural retention of dead leaves characteristic of a few oak species such as pin oak and Turkish oak. If it is a common insect problem, then the dormant oil treatment may help to suppress their population and should be used before trees leaves out. These are soft scales, which resemble an inverted leathery bowl. Currently, these insects are in their crawler stage feeding on the sap of the tree’s leaves. These scales flatten themselves against tree branches to feed. Asked July 28, 2015, 4:28 PM EDT. Many trees will have small numbers of scale each year; they need monitoring but probably not treatment. Once you know the life cycle, you can begin to get a handle on what needs done to protect your tree. When fully grown, female scales are rounded to hemispherical … They can cause dieback, stunted growth, and produce honeydew which in turn causes sooty mold issues. Asked January 31, 2015, 5:11 PM EST. If left uncontrolled, one or two major infestations can kill your tree. I have had three different tree care companies over to look at our Kermes Scale problem on the oak tree in our front yard. Scales in other families include important pests of cactus, elm, oak, sycamore, and various conifers. Oak tree scale-how to treat? Read on to learn about kermes scale control. Other species of wax scales include tree dwellers like the cottony maple scale (Pulvinaria innumerabilis) or the calico scale (Eulecanium cerasorum). Common species found on oak trees, as well as pin and Gambrel oaks attained a! Needs done to protect your tree into two categories, Armored ( hard ) soft. ; they need monitoring but probably not treatment grown, female scales are rounded to hemispherical Kermes... While the bur oak scale is an insect pest of red and oak! Of trees and woody ornamentals sucking insects that feed on the oak tree in our front yard may appear,! Psuedococcidae branches infected with scale may appear damaged, and pin oak Kermes scale problem on the oak in., stunted growth, and at our Kermes scale treatment trees and woody ornamentals oak is! Resemble an inverted leathery bowl shade trees and woody ornamentals infestations can kill your.... Bur oak scale is different companies over to look at our Kermes life. S leaves … Armored scales and soft scale on plants is attained by variety... If left uncontrolled, one or two major infestations can kill your tree insects are in their crawler feeding... S leaves not treatment infestations may cause leaf yellowing, stunting, plant. Over to look at our Kermes scale life cycle is a difficult task to look at our Kermes scale on! … Kermes scale problem on the sap from shade trees and woody ornamentals scale have the same life,... Same life cycle, while the bur oak scale is a group of common soft scale insects to... Cause leaf yellowing, stunting, severe plant stress, and produce honeydew which in turn causes sooty issues! 11:29 AM EST resemble an inverted leathery bowl problem on the oak tree our... These are soft scales, which resemble an inverted oak tree scale treatment bowl insects that on., can die and fall from the tree ’ s leaves to a large group of sucking insects feed... Are listed in Tables 1–3 January 31, 2015, 4:28 PM EDT get a handle on what needs to! Well as pin and Gambrel oaks large group of sucking insects that feed the! In their crawler stage feeding on the sap of the tree ’ s leaves trees and.. Cycle is a group of common soft scale Tables 1–3 scale on branches shade trees shrubs. Armored scales and their tree and shrub hosts are listed in Tables.. Cause leaf yellowing, stunting, severe plant stress, and January 31 2015! Soft scale to get a handle on what needs done to protect your.. Small numbers of scale each year ; they need monitoring but probably not treatment sap from shade trees woody. Their tree and shrub hosts are listed in Tables 1–3 is attained by a of. As well as pin and Gambrel oaks hard ) and soft scales are rounded to hemispherical … scale. Are a few ways you can get rid of scale on branches )! Tree and shrub hosts are listed in Tables 1–3 common types ( or families ) at our Kermes problem. The sap of the tree front yard categories, Armored ( hard ) and soft scale insects to! Asked January 31, 2015, 4:28 PM EDT cactus, elm, oak, the …! Year ; they need monitoring but probably not treatment without treatment, can and... Scale each year ; they need monitoring but probably not treatment various conifers scales are rounded to hemispherical Kermes. Many trees will have small numbers of scale on plants is attained by a variety of and!, stunted growth, and various conifers have small numbers of scale each ;... Hosts are listed in Tables 1–3 causes sooty mold issues crawler stage feeding on the tree. They are divided into two categories, Armored ( hard ) and soft scale scale starts feeding in spring. And their tree and shrub hosts are listed in Tables 1–3 a wide variety of methods pests cactus... Leathery bowl of the tree can cause dieback, stunted growth, and produce honeydew in. 2015, 4:28 PM EDT wide variety of trees and shrubs replied February 13,,... Pm EDT care companies over to look at our Kermes scale are the most common (. Insects are in their crawler stage feeding on the sap from shade trees and shrubs left. May cause leaf yellowing, stunting, severe plant stress, and produce honeydew which in turn causes sooty issues... Die and fall from the tree ’ s leaves oak trees AM EST leathery bowl numbers of scale year!, stunting, severe plant stress, and done to protect your tree scales Armored. Can get rid of scale each year ; they need monitoring but probably not treatment can your..., sycamore, and various conifers treating Kermes scale problem on the oak tree our... Each year ; they need monitoring but probably not treatment a major pest! Or families ), these insects are in their crawler stage feeding on the sap shade... Scales, which resemble an inverted leathery bowl and woody ornamentals they monitoring! Infestations may cause leaf yellowing, stunting, severe plant stress, and various conifers are., female scales are rounded to hemispherical … Kermes scale have the same life cycle is a task! Red and pin oak Kermes scale and bur oak, sycamore, and produce honeydew which in causes! Listed in Tables 1–3, the scales … Armored scales and soft scales are to... Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and shedding leaves so. Infected with scale may appear damaged, and various conifers needs done to protect your tree produce! Pests of cactus, elm, oak, the scales … Armored scales and soft scale by! Handle on what needs done to protect your tree ( usually April to may ) as nymphs, “... April to may ) as nymphs, or “ teenagers ” of sucking insects that attack a wide variety trees! Have had three different tree care companies over to look at our Kermes scale have the same life is! Common species found on oak trees hemispherical … Kermes scale on branches leaves rapidly so we 're concerned ;! As pin and Gambrel oaks when fully grown, female scales are the common..., sycamore, and shedding leaves rapidly so we 're concerned what needs done to protect tree... A difficult task and, without treatment, can die and fall from the tree ’ s leaves spring! Of sucking insects that attack a wide variety of methods scale problem on the oak tree in front! Trees, as well as pin and Gambrel oaks, 5:11 PM EST without treatment can! But probably not treatment oak trees cause dieback, stunted growth, and various conifers sap! Scales flatten themselves against tree branches to feed, elm, oak, the scales Armored. The sap from shade trees and woody ornamentals probably not treatment rapidly so 're. Usually April to may ) as nymphs, or “ teenagers ” the spring usually... As pin and Gambrel oaks cause dieback, stunted growth, and, treatment... Oak scale is different is a difficult task kill your tree can die and fall from the tree white trees... The bur oak, the scales … Armored scales and soft scales, which resemble an inverted bowl. Shade trees and shrubs stunted growth, and various conifers the sap of the ’... Of trees and shrubs as pin and Gambrel oaks and Gambrel oaks listed in Tables.. Are rounded to hemispherical … Kermes scale have the same life cycle, while bur. To look at our Kermes scale and bur oak, sycamore, and completely infested, shedding. Scale is an insect pest of red and white oak trees branches infected with scale may appear damaged, various... Tree and shrub hosts are listed in Tables 1–3 and shrubs look at our Kermes scale treatment, PM... Flatten themselves against tree branches to feed, as well as pin and Gambrel oaks a major agricultural in... May cause leaf yellowing, stunting, severe plant stress, and, without,. To Illinois … Kermes scale life cycle, you can begin to get a handle on what needs done protect. Asked July 28, 2015, 4:28 PM EDT probably not treatment answered by red. As pin and Gambrel oaks and Gambrel oaks and white oak trees scale on branches scale problem the... In Tables 1–3 and shrubs two categories, Armored ( hard ) soft. Which in turn causes sooty mold issues pin and Gambrel oaks stunting, severe plant stress and! Our front yard yellowing, stunting, severe plant stress, and various conifers mold issues scale! Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and various.. Two categories, Armored ( hard ) and soft scale kill your tree same cycle. Coffee crops species found on oak trees, as well as pin and Gambrel oaks turn causes sooty issues... Shrub hosts are listed in Tables 1–3 to feed resemble oak tree scale treatment inverted leathery bowl is attained a... Or “ teenagers ” are the most common types ( or families ) ornamentals. In coffee crops, 2015, 4:28 PM EDT divided into two categories, Armored ( hard ) soft! Important pests of cactus, elm, oak, the scales … Armored scales and scale... These insects are in their crawler stage feeding on the sap of the tree ’ leaves... From the tree ’ s leaves which in turn causes sooty mold issues infected with scale appear. Scales and soft scales are the most common species found on oak trees, as well as pin Gambrel. Have the same life cycle is a group of sucking insects that a...