{"id":14653,"date":"2019-11-12T10:36:00","date_gmt":"2019-11-12T09:36:00","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/thuja\/"},"modified":"2023-12-14T16:14:12","modified_gmt":"2023-12-14T15:14:12","slug":"thuja","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/thuja\/","title":{"rendered":"Thuja"},"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;]Thuja is a conifer native to North America that belongs to the cypress family.<!--more-->[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/3&Prime;][\/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;4919&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_1702566491169{padding-left: 10px !important;}&rdquo;]<\/p>\n<ul>\n<li>Thuja (leaf) is toxic when taken internally (eaten). Thujas contain <em>thujone<\/em>, an essential oil added to beverages.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/2&Prime; css=&rdquo;.vc_custom_1649261386815{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>Thuja<\/strong> is a conifer native to North America that belongs to the cypress family <em>(Cupressaceae)<\/em>. Thujas are evergreen and hardy. They grow on average 25 cm per year, have no special requirements for location and soil, which makes them suitable hedge plants. Unpruned, thujas can grow six feet tall.<br>\nTo keep the hedge in shape, pruning (&ldquo;shearing&rdquo;) with a hedge trimmer twice a year is necessary. June and September are the best months for pruning. Do not prune the hedge down to the bare wood; thujas do not sprout on the bare wood and tolerate too vigorous pruning poorly.<br>\nAlways prune so that the top is narrower than the bottom: that way the bottom of the hedge does not end up in its own (rain) shade and become top-heavy. Frequent pruning removes many nutrients from the soil; regular (spring) fertilizing keeps the hedge healthy.<br>\nThujas grow best in well-drained soil; they do not like wet feet. This hedge plant likes a sheltered position in sun or partial shade.<br>\nPrevent Thuja from drying out during dry periods, water regularly.[\/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;]The tips of the green ends become translucent: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/thuja-mining-moth\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Thuja mining moth; the caterpillars of this moth eat the chlorophyll from the scales of thujas, making them transparent.[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1573555544236{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=\"4923\" 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\"]Thuja mining moth (Argyresthia thuiella). The three-millimeter-long caterpillars of this moth eat the&hellip;' class=\"encyclopedia\">Thuja mining moth<\/a> <em>(Argyresthia tuiella)<\/em>.<\/p>\n<p>Branches of the Thuja turn brown: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/cypress-aphid\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Cypress aphid, a + 2.5 mm aphid occurs on conifers.[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][\/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=\"4907\" 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\"]Cypress aphid (Cinara cupressi). These + 2.5 mm aphids occur on conifers. The aphids are not noticeable due to their gray-brown camouflage color. Aphids are present throughout&hellip;' class=\"encyclopedia\">Cypress aphid<\/a> <em>(Cinara cupressi)<\/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;]In some places the thuja yellows, after which the branches wither and the infection gradually spreads through the thuja: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/cedar-leaf-blight\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Cedar leaf blight is a fungus of the Helotiaceae family that affects conifers in North America and Europe. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1702552049249{padding-left: 20px !important;}\"]Similar: Needle blight (Kabatina juniperi) - Juniperus spp.[\/vc_column_text][vc_column_text el_class=\"entrytxt\" css=\".vc_custom_1666779593117{padding-left: 20px !important;}\"]Also known as: Keithia (leaf) blight [\/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=\"11899\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][\/vc_column][vc_column&hellip;' class=\"encyclopedia\">Cedar leaf blight<\/a> <em>(Didymascella thujina)<\/em> and needle blight <em>(Kabatina juniperi)<\/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;]Brown dots on the ends of branches: blunt pruning tools, cutting the green raggedly. Or the pruning took place in late fall or winter, causing the pruned foliage to die due to cold.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"author":14,"template":"","categories":[],"tags":[],"encyclopedia-category":[667],"encyclopedia-tag":[903],"class_list":["post-14653","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-category-ornamental-garden","encyclopedia-tag-conifer"],"_links":{"self":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia\/14653","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=14653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/categories?post=14653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/tags?post=14653"},{"taxonomy":"encyclopedia-category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-category?post=14653"},{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=14653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}