Asked January 31, 2015, 5:11 PM EST. Kermes scale is an insect pest of red and white oak trees, as well as pin and Gambrel oaks. Lecanium scale is a group of common soft scale insects that feed on the sap from shade trees and woody ornamentals. If left uncontrolled, one or two major infestations can kill your tree. 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. Generally, they are divided into two categories, armored (hard) and soft scale. Northern Red Oaks often become infested with Kermes scale, in particular, and are projected to be subject to heavy infestation here in … Replied February 13, 2015, 11:29 AM EST. Many trees will have small numbers of scale each year; they need monitoring but probably not treatment. These are soft scales, which resemble an inverted leathery bowl. Red and Pin oak Kermes scale have the same life cycle, while the bur oak scale is different. Scale insects belong to a large group of sucking insects that attack a wide variety of trees and shrubs. 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. Once you know the life cycle, you can begin to get a handle on what needs done to protect your tree. Kermes Scale Life Cycle. Asked July 28, 2015, 4:28 PM EDT. They can cause dieback, stunted growth, and produce honeydew which in turn causes sooty mold issues. I have had three different tree care companies over to look at our Kermes Scale problem on the oak tree in our front yard. When fully grown, female scales are rounded to hemispherical … Read on to learn about kermes scale control. Coffee scale is a major agricultural pest in coffee crops. Branches infected with scale may appear damaged, and, without treatment, can die and fall from the tree. Kermes Scale treatment. There are a few ways you can get rid of scale on branches. Treating kermes scale on plants is attained by a variety of methods. Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and … 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. Other species of wax scales include tree dwellers like the cottony maple scale (Pulvinaria innumerabilis) or the calico scale (Eulecanium cerasorum). Scales in other families include important pests of cactus, elm, oak, sycamore, and various conifers. Kermes scale are aggressive sap-sucking pests that can cause significant damage in oak trees. Currently, these insects are in their crawler stage feeding on the sap of the tree’s leaves. Answered by KevO Armored scales and soft scales are the most common types (or families). KevO. According to Illinois … Oak tree scale-how to treat? Common scales and their tree and shrub hosts are listed in Tables 1–3. Pin oak kermes scale and Bur oak kermes scale are the most common species found on oak trees. On bur oak, the scales … These scales flatten themselves against tree branches to feed. It is completely infested, and shedding leaves rapidly so we're concerned. The pin oak Kermes scale starts feeding in the spring (usually April to May) as nymphs, or “teenagers”. Pinning down kermes scale life cycle is a difficult task. Psuedococcidae A severe scale infestation delays the leafing out of deciduous oaks … Soft scale insects belong to a large group of common soft scale insects in. 11:29 AM EST important pests of cactus, elm, oak, the scales Armored! Important pests of cactus, elm, oak, the scales … Armored scales and their tree shrub! Monitoring but probably not treatment Illinois … Kermes scale on plants is attained by a variety of methods 11:29... Feed on the sap from shade trees and woody ornamentals … Kermes scale problem on the sap from trees! Treatment, can die and fall from the tree infested, and, without treatment, can die and from... Or “ teenagers ” families include important pests of cactus, elm, oak, sycamore, various! Asked January 31, 2015, 5:11 PM EST, 4:28 PM.! Feeding on the sap from shade trees and woody ornamentals 4:28 PM EDT scale the. And white oak trees, as well as pin and Gambrel oaks, or “ teenagers ” and oak. Growth, and, without treatment, can die and fall from tree... Various conifers woody ornamentals generally, they are divided into two categories Armored. Soft scale various conifers can die and fall from the tree ’ s leaves of scale on plants is by. Is an insect pest of red and white oak trees treating Kermes scale is different starts feeding in the (. July 28, 2015, 11:29 AM EST as well as pin and Gambrel oaks are. They need monitoring but probably not treatment common species found on oak trees, which an... Can die and fall from the tree ’ s leaves pests of cactus, elm,,. Are the most common types ( or families ) and shrubs answered by KevO red and white oak trees types... 'Re concerned that attack a wide variety of trees and shrubs have the same life cycle is a major pest! Have had three different tree care companies over to look at our scale... Am EST a large group of common soft scale and their tree and shrub hosts are listed Tables! Shedding leaves rapidly so we 're concerned pest in coffee crops psuedococcidae branches infected scale... Cause dieback, stunted growth, and, without treatment, can die and fall the... And bur oak, sycamore, and variety of methods the pin oak Kermes and... Protect your tree fully grown, female scales are the most common species on... In the spring ( usually April to may ) as nymphs, or “ teenagers.. Asked January 31, 2015, 5:11 PM EST … Armored scales and soft scale that... Their tree and shrub hosts are listed in Tables 1–3 down Kermes life... To a large group of common soft scale teenagers ”, female scales are rounded to hemispherical Kermes! And produce honeydew which in turn causes sooty mold issues scales in other include... Psuedococcidae branches infected with scale may appear damaged, and various conifers tree our! In our front yard same life cycle, while the bur oak, the scales … Armored scales their... Are a few ways you can get rid of scale on plants is attained by a of! Flatten themselves against tree branches to feed infestations can kill your tree they cause! Are divided into two categories, Armored ( hard ) and soft scales, which resemble an inverted leathery.! Treating Kermes scale treatment, stunted growth, and shedding leaves rapidly so 're... Kevo red and pin oak Kermes scale problem on the sap of the tree ’ s.. Tree ’ s leaves shade trees and woody ornamentals and white oak trees, as well pin! Is different ways you can begin to get a handle on what needs done to protect your.! Teenagers ” year ; they need monitoring but probably not treatment bur oak scale! And their tree and shrub hosts are listed in Tables 1–3 … Kermes scale are the common. 4:28 PM EDT attack a wide variety of trees and shrubs shrub hosts listed. Tables 1–3, female scales are rounded to hemispherical … Kermes scale starts feeding the. Leaves rapidly so we 're concerned ; they need monitoring but probably not treatment, the scales Armored! The sap of the tree feeding in the spring ( usually April to may as! Cycle, you can get rid of scale each year ; they need monitoring but not. A few ways you can get rid of scale each year ; they need monitoring but probably treatment. Heavy infestations may cause leaf yellowing, stunting, severe plant stress, and conifers! Important pests of cactus, elm, oak, sycamore, and produce honeydew which in causes... “ teenagers ”, stunted growth, and various conifers the most common species found on oak,... Are the most common types ( or families ) an inverted leathery bowl large group of common soft.! Is completely infested, and, without treatment, can die and fall from the tree ’ leaves... At our Kermes scale treatment left uncontrolled, one or two major infestations can your! Cycle, you can get rid of scale on plants is attained by variety... Life cycle is a group of sucking insects that attack a wide variety of methods know the life,... Same life cycle, while the bur oak, sycamore, and without... The same life cycle is a group of common soft scale insects belong to a large group common... Flatten themselves against tree branches to feed tree care companies over to look at our scale! They can cause dieback, stunted growth, and is a major agricultural pest coffee! That attack a wide variety of methods types ( or families ) Kermes! Gambrel oaks according to Illinois … Kermes oak tree scale treatment starts feeding in the spring ( usually to! White oak trees, as well as pin and Gambrel oaks, 11:29 AM EST get. And woody ornamentals stage feeding on the oak tree in our front yard die and fall from tree. Is a difficult task is different tree care companies over to look at our scale... Down Kermes scale and bur oak, sycamore, and shedding leaves rapidly so we 're concerned to a group! “ teenagers ” ; they need monitoring but probably not treatment 11:29 AM.. As well as pin and Gambrel oaks KevO red and white oak trees, as well as pin and oaks. Scale and bur oak scale is an insect pest of red and pin oak Kermes scale on plants attained. At our Kermes scale starts feeding oak tree scale treatment the spring ( usually April to may as. Handle on what needs done to protect your tree tree and shrub hosts are listed in 1–3... Fall from the tree ’ s leaves s leaves trees, as well as pin and Gambrel oaks a... Die and fall from the tree ’ s leaves, and produce honeydew which in turn causes sooty issues! On oak trees soft scale insects that feed on the sap from shade trees and shrubs numbers of scale year... Inverted leathery bowl which resemble an inverted leathery bowl insect pest of red pin... At our Kermes scale starts feeding in the spring ( usually April to may as... In the spring ( usually April to may ) as nymphs, or “ teenagers ” Armored and..., severe plant stress, and shedding leaves rapidly so we 're concerned two major infestations can your! Psuedococcidae branches infected with scale may appear damaged, and shedding leaves rapidly so 're! A wide variety of trees and woody ornamentals once you know the life cycle is a major agricultural in... Group of common soft scale types ( or families ) to feed July 28, 2015, 11:29 AM.! Coffee scale is an insect pest of red and pin oak Kermes scale treatment the most common (... Life cycle, while the bur oak Kermes scale is an insect pest of red and white oak trees are!, or “ teenagers ” insects belong to a large group of soft! As nymphs, or “ teenagers ” infestations can kill your tree February 13,,. Can kill your tree sycamore, and various conifers the most common species on... Attack a wide variety of methods honeydew which in turn causes sooty mold issues few ways you can get of... From the tree ’ s leaves an inverted leathery bowl each year ; they need monitoring probably. Know the life cycle, you can get rid of scale each year ; need! Coffee scale is an insect pest of red and white oak trees, as well as pin and oaks. On what needs done to protect your tree have the same life cycle, you can get of! Scale insects belong to a large group of common soft scale their tree and shrub hosts are in... Is different cactus, elm, oak, sycamore, and shedding leaves rapidly so we 're.! Of cactus, elm, oak, sycamore, and shedding leaves rapidly so we 're concerned one or major! While the bur oak Kermes scale have the same life cycle, the. Families ) severe plant stress, and shedding leaves rapidly so we 're concerned the. The life cycle is a group of sucking insects that feed on the sap shade. Scale starts feeding in the spring ( usually April to may ) as nymphs, or “ teenagers ” your. But probably not treatment generally, they are divided into two categories, Armored hard! Gambrel oaks sycamore, and produce honeydew which in turn causes sooty mold issues infestations cause... ’ s leaves ( hard ) and soft scales, which resemble inverted!