{"id":14583,"date":"2019-03-17T15:05:05","date_gmt":"2019-03-17T14:05:05","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/rose-black-spot\/"},"modified":"2023-12-11T15:01:07","modified_gmt":"2023-12-11T14:01:07","slug":"rose-black-spot","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/rose-black-spot\/","title":{"rendered":"Rose black spot"},"content":{"rendered":"<div class=\"wpb-content-wrapper\" id=\"wpb-content-root\"><p>[vc_row][vc_column width=&rdquo;2\/3&Prime;][vc_column_text el_id=&rdquo;topentry&rdquo; el_class=&rdquo;topentry&rdquo;]Ro<wbr><\/wbr>se black spot: This fungus causes the characteristic star-shaped spots on roses and laurel.<br>\n<!--more-->[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime;][\/vc_column][\/vc_row][vc_row gap=&rdquo;35&Prime; css=&rdquo;.vc_custom_1532162142715{background-color: #e6e6e6 !important;}&rdquo;][vc_column width=&rdquo;1\/2&Prime;][vc_single_image image=&rdquo;3691&Prime; img_size=&rdquo;medium&rdquo; add_caption=&rdquo;yes&rdquo; style=&rdquo;vc_box_rounded&rdquo; onclick=&rdquo;img_link_large&rdquo;][\/vc_column][vc_column width=&rdquo;1\/2&Prime; css=&rdquo;.vc_custom_1532162092980{background-color: #e6e6e6 !important;}&rdquo;][vc_column_text el_class=&rdquo;entrytxt&rdquo;]<strong>Ro<wbr><\/wbr>se black spot<\/strong> <em>(Diplocarpon rosae)<\/em>. This fungus causes the characteristic star-shaped spots on roses and laurel. In humid weather, the fungus becomes active. The affected leaves yellow and fall off prematurely.<br>\nSpores of the fungus hibernate on the soil; splashing rain infects the lower leaves, after which further infection occurs.<br>\nWeak plants are more susceptible to Ro<wbr><\/wbr>se black spot than healthy ones..<br>\nSome roses are more susceptible to Ro<wbr><\/wbr>se black spot than others: the thornless climbing ro<wbr><\/wbr>se <em>Z&eacute;pherine Drouhin<\/em> is very susceptible, as are older varieties while some cultivars are now resistant.[\/vc_column_text][\/vc_column][\/vc_row][vc_row equal_height=&rdquo;yes&rdquo;][vc_column width=&rdquo;1\/3&Prime;][vc_custom_heading text=&rdquo;Where to find&rdquo; font_container=&rdquo;tag:h4|text_align:center|color:%23ffffff&rdquo; google_fonts=&rdquo;font_family:Lato%3A100%2C100italic%2C300%2C300italic%2Cregular%2Citalic%2C700%2C700italic%2C900%2C900italic|font_style:400%20regular%3A400%3Anormal&rdquo; css=&rdquo;.vc_custom_1537946500082{background-color: #536895 !important;}&rdquo;][vc_column_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo; css=&rdquo;.vc_custom_1552830423216{padding-left: 15px !important;}&rdquo;]<\/p>\n<ul>\n<li>Laurel<\/li>\n<li><a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/rose\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Rose, shrub, belonging to the rose family. Wild or botanical roses have their origins in the temperate regions of the northern hemisphere. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][\/vc_column][\/vc_row][vc_row content_placement=\"middle\" css=\".vc_custom_1627123481876{padding-top: 0px !important;padding-right: 5px !important;padding-bottom: 0px !important;padding-left: 5px !important;background-color: #ccffff !important;border-radius: 20px !important;}\" el_id=\"mobile\"][vc_column offset=\"vc_hidden-lg vc_hidden-md vc_hidden-sm\"][vc_column_text css=\".vc_custom_1627123409680{padding: 0px !important;border: 0px initial !important;}\" el_id=\"mobiel\"] You are viewing&hellip;' class=\"encyclopedia\">Rose<\/a><\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime; css=&rdquo;.vc_custom_1532102790165{background-color: #ffffff !important;}&rdquo;][vc_custom_heading text=&rdquo;Control&rdquo; font_container=&rdquo;tag:h4|text_align:center|color:%23ffffff&rdquo; google_fonts=&rdquo;font_family:Lato%3A100%2C100italic%2C300%2C300italic%2Cregular%2Citalic%2C700%2C700italic%2C900%2C900italic|font_style:400%20regular%3A400%3Anormal&rdquo; css=&rdquo;.vc_custom_1532165404849{background-color: #536895 !important;}&rdquo;][vc_column_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo;]Remove infested leaves. Spraying with <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/horsetail-spray\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_class=\"topentry\"]Horsetail spray is a fermented brew of horsetail (Equisetum arvense). [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][\/vc_column][\/vc_row][vc_row][vc_column width=\"2\/3\"][vc_column_text el_class=\"introtxt\" el_id=\"introtxt\"]Horsetail spray - a fermented brew of horsetail (Equisetum arvense). Pour 10 liters of water to 1 kilogram of horsetail, add 500 grams of sugar and let it stand for fifteen to twenty days. Stir every day. After a&hellip;' class=\"encyclopedia\">horsetail spray<\/a>.[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime; css=&rdquo;.vc_custom_1532102799994{background-color: #ffffff !important;}&rdquo;][vc_custom_heading text=&rdquo;Prevention&rdquo; font_container=&rdquo;tag:h4|text_align:center|color:%23ffffff&rdquo; google_fonts=&rdquo;font_family:Lato%3A100%2C100italic%2C300%2C300italic%2Cregular%2Citalic%2C700%2C700italic%2C900%2C900italic|font_style:400%20regular%3A400%3Anormal&rdquo; css=&rdquo;.vc_custom_1532165414573{background-color: #536895 !important;}&rdquo;][vc_column_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo;]Water around the plant on the ground, do not water the plant itself. This is how you keep the humidity at the plants low.<br>\nFor susceptible roses, ensure a sunny location so that the foliage does not stay damp for long after a rain shower. After leaf emergence, treat the foliage preventively with <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/horsetail\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_class=\"topentry\"]Horsetail belongs to the horsetail family (Equisetaceae) . It is a perennial that grows to a maximum height of 40 cm. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1676124344818{padding-left: 18px !important;}\"]Also known as: Common horsetail Field horsetail Mare&rsquo;s tail[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=\"2\/3\"][vc_column_text el_class=\"introtxt\" el_id=\"introtxt\"]Horsetail - Equisetum arvense - belongs to the horsetail family (Equisetaceae) . It is a&hellip;' class=\"encyclopedia\">horsetail<\/a> spray.<\/p>\n<p>Pruning waste and prematurely fallen leaves can contain fungal spores; prevent re-contamination and do not put this waste on the compost heap but dispose of it in the organic waste container.<\/p>\n<p>Roses resistant to Ro<wbr><\/wbr>se black spot are also available.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"author":14,"template":"","categories":[],"tags":[],"encyclopedia-category":[665],"encyclopedia-tag":[],"class_list":["post-14583","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-category-fungi-and-diseases"],"_links":{"self":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia\/14583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"author":[{"embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/users\/14"}],"wp:attachment":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/media?parent=14583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/categories?post=14583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/tags?post=14583"},{"taxonomy":"encyclopedia-category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-category?post=14583"},{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=14583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}