{"id":18541,"date":"2021-11-03T14:46:23","date_gmt":"2021-11-03T18:46:23","guid":{"rendered":"https:\/\/www.purdue.edu\/fnr\/extension\/?p=18541"},"modified":"2025-08-06T09:07:58","modified_gmt":"2025-08-06T13:07:58","slug":"tip-blight-disease-causes-havoc-for-juniper-evergreens","status":"publish","type":"post","link":"https:\/\/www.purdue.edu\/fnr\/extension\/tip-blight-disease-causes-havoc-for-juniper-evergreens\/","title":{"rendered":"Tip Blight Disease Causes Havoc for Juniper Evergreens"},"content":{"rendered":"

Purdue Landscape Report – Tip Blights of Juniper<\/a>: Junipers have to be my favorite group of evergreens, behind a select few pine species. They have a fantastic fragrance, are evergreen, many can tolerate drought, are an ingredient in gin (definitely a bonus), and work well in a variety of landscape uses, including as a barrier plant. They look great year round, except when they have tip blight.<\/p>\n

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Juniper with tip blight symptoms in the landscape<\/p><\/div>\n

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Phomopsis tip blight affecting multiple juniper branches<\/p><\/div>\n

Tip blight is a common disease in nurseries and landscapes that cause branch tips to die back fairly quickly starting in the spring. Infected branches become chlorotic, progressing from light green to yellow, before turning brown as the season continues. Black fungal structures will develop in the transition zone between affected foliage and green, healthy tissue. Some of the infected scales may turn gray in color, surrounding these structures.<\/p>\n

Two fungi cause tip blight,\u00a0Kabatina\u00a0<\/em>and\u00a0Phomopsis<\/em>, and knowing which one you have is important to determine your management strategies. Both fungi produce similar symptoms and similar fungal structures,<\/p>\n

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Branch tips turning pale yellow due to infection by Kabatina.<\/p><\/div>\n

so the presence of tiny black dots cannot help separate these diseases. Both fungi also infect a range of hosts, including arborvitae, cypress, Douglas fir, true firs, yew, Cryptomeria,<\/em> and\u00a0Chamaecyparis<\/em>, but these are not as susceptible as juniper species.<\/p>\n

Kabatina<\/em> infects young, new growth during the growing season, but infected twigs remain green until winter and the following spring . . .<\/p>\n

Full article > > ><\/a><\/p>\n

Resources:
\n<\/strong>Borers of Pines and Other Needle Bearing Evergreens in Landscapes<\/a>, The Education Store, Purdue Extension resource center
\nAsk an Expert Question: Blue Spruce dying, what can I do?<\/a>, Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
\nWhy Spruce Trees Lose Their Needles<\/a>, Purdue Extension
\nDiseases Common in Blue Spruce<\/a>, Purdue Extension
\nPurdue University Invasive Species<\/a><\/p>\n

John Bonkowski<\/a>, Plant Disease Diagnostician
\nPurdue Botany and Plant Pathology<\/p>\n","protected":false},"excerpt":{"rendered":"

Purdue Landscape Report – Tip Blights of Juniper: Junipers have to be my favorite group of evergreens, behind a select few pine species. They have a fantastic fragrance, are evergreen, many can tolerate drought, are an ingredient in gin (definitely a bonus), and work well in a variety of landscape uses, including as a barrier […]<\/p>\n","protected":false},"author":54,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,80,53],"tags":[1460,1523,895,1522],"class_list":["post-18541","post","type-post","status-publish","format-standard","hentry","category-forestry","category-trees","category-urbanforestry","tag-evergreen","tag-juniper","tag-purdue-landscape-report","tag-tip-blights","audience-for-enthusiasts","audience-for-homeowners","audience-for-landowners","audience-for-professionals"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t