{"id":12721,"date":"2019-06-25T12:45:20","date_gmt":"2019-06-25T10:45:20","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/st-johns-wort\/"},"modified":"2023-03-01T10:48:09","modified_gmt":"2023-03-01T09:48:09","slug":"st-johns-wort","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/st-johns-wort\/","title":{"rendered":"St John&#8217;s wort"},"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;]St John&rsquo;s wort, a family of shrubs and herbs.<!--more-->[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime;][vc_column_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo;]Perforate St John&rsquo;s wort <em>(Hypericum perforatum)<\/em> is also known as:<br>\nCommon St John&rsquo;s wort[\/vc_column_text][\/vc_column][\/vc_row][vc_row content_placement=&rdquo;middle&rdquo; css=&rdquo;.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;}&rdquo; el_id=&rdquo;mobile&rdquo;][vc_column offset=&rdquo;vc_hidden-lg vc_hidden-md vc_hidden-sm&rdquo;][vc_column_text css=&rdquo;.vc_custom_1627123409680{padding: 0px !important;border: 0px initial !important;}&rdquo; el_id=&rdquo;mobiel&rdquo;]<\/p>\n<p style=\"text-align: center;\"><span style=\"color: #000099;\">You are viewing the mobile-adapted version of the page.<\/span><br>\n<span style=\"color: #000099;\">The one for tablets, laptop and desktop also provides general information, such as origin, toxicity and cultivation.<\/span><\/p>\n<p>[\/vc_column_text][\/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; offset=&rdquo;vc_hidden-xs&rdquo;][vc_single_image image=&rdquo;4271&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_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo; css=&rdquo;.vc_custom_1677664085072{padding-left: 10px !important;}&rdquo;]<\/p>\n<ul>\n<li><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Sint-janskruid_bloeiwijze_Hypericum_perforatum.jpg\" target=\"_blank\" rel=\"noopener\">Perforate St. John&rsquo;s wort<\/a> <em>(Hypericum perforatum)<\/em> is a medicinal herb; and toxic to livestock. St John&rsquo;s wort &lsquo;Hidcote&rsquo; (<em>Hypericum patulum<\/em> &lsquo;Hidcote&rsquo;) does not possess the medicinal properties of perforate St. John&rsquo;s wort.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/2&Prime; css=&rdquo;.vc_custom_1649256793397{background-color: #e6e6e6 !important;}&rdquo; offset=&rdquo;vc_hidden-xs&rdquo;][vc_column_text el_id=&rdquo;topentry&rdquo; el_class=&rdquo;topentry&rdquo;]<strong>St John&rsquo;s wort<\/strong> &ndash; <em>(Hypericum)<\/em>, a family of shrubs and herbs. Perforate St. John&rsquo;s wort <em>(Hypericum perforatum)<\/em> is among them, as well as the shrub St. John&rsquo;s wort &lsquo;Hidcote&rsquo; (<em>Hypericum patulum &lsquo;Hidcote&rsquo;)<\/em>, which is found in many ornamental gardens.<br>\nPerforate St. John&rsquo;s wort is a medicinal herb: it is a mild antidepressant.<br>\nSt John&rsquo;s wort &lsquo;Hidcote&rsquo; is a hardy shrub that can grow 80 to 100 cm tall and blooms from late July through October with brilliant yellow flowers. Orange\/brown berries appear in autumn.<br>\nSt John&rsquo;s wort likes sun to light shade and a nutrient-rich, slightly moist, well-drained soil. St John&rsquo;s wort &lsquo;Hidcote&rsquo; is hardy and keeps its leaves in winter. It&rsquo;s a strong shrub that is not susceptible to fungi and diseases.[\/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;Bugs&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_1532164328547{background-color: #585858 !important;}&rdquo;][vc_column_text el_class=&rdquo;entrytxt&rdquo;]<\/p>\n<figure id=\"attachment_4263\" aria-describedby=\"caption-attachment-4263\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/aardvlo-hersthooi.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4263\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/aardvlo-hersthooi-500x375.jpg\" alt=\"Recognizing flea beetles on St John's wort\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/aardvlo-hersthooi-500x375.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/aardvlo-hersthooi-768x576.jpg 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/aardvlo-hersthooi.jpg 1024w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-4263\" class=\"wp-caption-text\">Small <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/beetles\/\" target=\"_blank\" title=\"[vc_row][vc_column][vc_column_text]Beetles (Coleoptera) belong to the winged insects, whose front pair of wings are hardened into wing-cases (elytra). Except at the poles and in the sea, beetles are found all over the world. There are over 4,200 beetle species in the UK. See: Apple blossom weevil, flea beetle, Common asparagus beetle, asparagus beetle, Beech leaf-miner beetle,&hellip;\" class=\"encyclopedia\">beetles<\/a> in flower, often including holes, photo: Rob Tjalkens<\/figcaption><\/figure>\n<p>Small holes in the flowers and leaves: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/flea-beetle\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Flea fleas: small beetles that live on cruciferous plants from which it eats the young leaves.[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\"][\/vc_column_text][\/vc_column][\/vc_row][vc_row gap=\"35\" css=\".vc_custom_1532162142715{background-color: #e6e6e6 !important;}\"][vc_column width=\"1\/2\"][vc_single_image image=\"4255\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][\/vc_column][vc_column width=\"1\/2\" css=\".vc_custom_1532162092980{background-color: #e6e6e6 !important;}\"][vc_column_text el_class=\"entrytxt\"]Flea beetle (Psylliodes). These tiny beetles of only 2 to 3 mm in size belong to the leaf beetles.&hellip;' class=\"encyclopedia\">flea beetle<\/a> <em>(Psylliodes).<\/em>[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime; css=&rdquo;.vc_custom_1532102781238{background-color: #ffffff !important;}&rdquo;][vc_custom_heading text=&rdquo;Fungi &amp; diseases&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_1537885449118{background-color: #585858 !important;}&rdquo;][vc_column_text el_class=&rdquo;entrytxt&rdquo;]<\/p>\n<figure id=\"attachment_6023\" aria-describedby=\"caption-attachment-6023\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Hypericunroest_blad.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6023\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Hypericunroest_blad.jpg\" alt=\"recognize rust on hypericum\" width=\"500\" height=\"375\"><\/a><figcaption id=\"caption-attachment-6023\" class=\"wp-caption-text\">Yellow spots on leaves, photo: W.N. Ellis &ndash; CC-SA 4.0<\/figcaption><\/figure>\n<p>Yellow spots on the leaves and orange-like spots on the underside. The yellow spots turn dark brown, after which the leaves fall off. A severe infestation can lead to early leaf drop: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/hypericum-rust\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Hypericum rust on St John&rsquo;s wort is caused by a variant of Melampsora. This fungus primarily affects woody crops. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1591711841902{padding-left: 20px !important;}\"][\/vc_column_text][\/vc_column][\/vc_row][vc_row gap=\"35\" css=\".vc_custom_1532162142715{background-color: #e6e6e6 !important;}\"][vc_column width=\"1\/2\"][vc_single_image image=\"6021\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][\/vc_column][vc_column width=\"1\/2\" css=\".vc_custom_1532162092980{background-color: #e6e6e6 !important;}\"][vc_column_text el_class=\"entrytxt\"]Hypericum rust (Melampsora hypericorum). Rust on St John&rsquo;s wort is caused by&hellip;' class=\"encyclopedia\">Hypericum rust<\/a> <em>(Melampsora hypericorum)<\/em>.[\/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;Other&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_1532164377225{background-color: #585858 !important;}&rdquo;][vc_column_text el_id=&rdquo;entrytxt&rdquo; el_class=&rdquo;entrytxt&rdquo;]In prolonged, severe frosts and high winds, the leaves can dry out and fall off.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"author":14,"template":"","categories":[],"tags":[],"encyclopedia-category":[667],"encyclopedia-tag":[],"class_list":["post-12721","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-category-ornamental-garden"],"_links":{"self":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia\/12721","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=12721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/categories?post=12721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/tags?post=12721"},{"taxonomy":"encyclopedia-category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-category?post=12721"},{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=12721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}