Lilacwitches’-broom (LWB) is a disease of lilacs caused by Candidatus Phytoplasma fraxini. This Phytoplasma was first identified as the causal agent of Ash yellows and has since been attributed to both diseases. · Lilacwitches’ broom is an unusual growth pattern that causes new shoots to grow in tufts or clusters so that they resemble an old-fashioned broom. The brooms are caused by a disease that often kills the shrub. · The characteristic symptom is the development of witches’ broom (tight clusters of short, thin branches that all stem from the same point). These witches’ brooms tend to form near the base of the lilac but they can also occur at the ends of branches. View allLilacwitches’-broom (LWB) is a disease of lilacs caused by Candidatus Phytoplasma fraxini. This Phytoplasma was first identified as the causal agent of Ash yellows and has since been attributed to both diseases. Phytoplasmas cause witches’-brooms and bunch disorders on pecan, hickory, lilac, walnut, willow, dogwood, ash, honeylocust, peach, and elm. Juniper, firs, hemlocks, and pines can also develop witches’-brooms in reaction to infestation from dwarf mistletoe. Adult is a clear wing moth that resembles paper wasp; smoky brown forewing, hindwing is clear with brown edge. Don't see what you're looking for? Ash yellows is a chronic disease of ash trees, especially white ash, causing unusual leaf growth and witchesbrooms. It can also affect lilacs. Learn about this unusual disease in this factsheet. · Phytoplasmas, which are bacteria-like organisms without rigid cell walls, disrupt the plant’s sap-conducting tissues (phloem), leading to witches’ broom in plants such as elm, ash, and lilac. · The characteristic symptom is the development of witches’ broom (tight clusters of short, thin branches that all stem from the same point). These witches’ brooms tend to form near the base of the lilac but they can also occur at the ends of branches. Phytoplasmas cause witches’-brooms and bunch disorders on pecan, hickory, lilac, walnut, willow, dogwood, ash, honeylocust, peach, and elm. Juniper, firs, hemlocks, and pines can also develop witches’-brooms in reaction to infestation from dwarf mistletoe. · Phytoplasmas, which are bacteria-like organisms without rigid cell walls, disrupt the plant’s sap-conducting tissues (phloem), leading to witches’ broom in plants such as elm, ash, and lilac. Ash yellows is a chronic disease of ash trees, especially white ash, causing unusual leaf growth and witchesbrooms. It can also affect lilacs. Learn about this unusual disease in this factsheet. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Get the official YouTube app on Android phones and tablets. See what the world is watching -- from the hottest music videos to what’s popular in gaming, fashion, beauty, news, learning and more.... Get the official YouTube app on iPhones and iPads. See what the world is watching -- from the hottest music videos to what’s popular in gaming, fashion, beauty, news, learning and more. Official YouTube Help Center where you can find tips and tutorials on using YouTube and other answers to frequently asked questions. Discover their hidden obsessions, their weird rabbit holes and the Creators & Artists they stan, we get to see a side of our guest Creator like never before…in a way that only YouTube can. Open the Play Store on your mobile device. Search for "YouTube." Select the official YouTube app. Tap Install. Visit the Google Play Help Center to learn more about downloading Android apps.... AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new featuresNFL Sunday Ticket © 2026 Google LLC YouTube’s mission is to give everyone a voice and show them the world. Learn about our brand, community, careers and more. Discover videos, music, and original content on YouTube, connecting with people worldwide. Adult is a clear wing moth that resembles paper wasp; smoky brown forewing, hindwing is clear with brown edge. Don't see what you're looking for?
