{"id":13343,"date":"2020-11-01T12:27:01","date_gmt":"2020-11-01T11:27:01","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/hawthorn\/"},"modified":"2023-07-23T17:31:47","modified_gmt":"2023-07-23T15:31:47","slug":"hawthorn","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/hawthorn\/","title":{"rendered":"Hawthorn"},"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;]Hawthorn, shrub belonging to the <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> family. Hawthorns are native mainly to the northern hemisphere: Europe, North America, Asia and North Africa.<br>\n<!--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;]<em>Also known as:<\/em><br>\nQuickthorn<br>\nMayflower<br>\nThornapple<br>\nHawberry[\/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;6391&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_1604238898035{padding-left: 10px !important;}&rdquo;]<\/p>\n<ul>\n<li>The berries of the hawthorn are not poisonous; the fruits are used in herbalism.<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column][vc_column width=&rdquo;1\/2&Prime; css=&rdquo;.vc_custom_1649258783969{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>Hawthorn<\/strong> &ndash; <em>(Crataegus)<\/em>, shrub belonging to the rose family <em>(Rosaceae)<\/em>. Hawthorns are native mainly to the northern hemisphere: Europe, North America, Asia and North Africa. There are single-style <em>(Crataegus monogyna)<\/em> and bi-style <em>(Crataegus laevigata)<\/em> hawthorns. <em>Single-style<\/em> and <em>bi-style:<\/em> the pistils of the single-style hawthorn are all the same, while the pistils of the bi-style hawthorn have two &lsquo;styles&rsquo; (variations).<br>\nCommon hawthorn is found in river valleys and calcareous soils. The blossom has an unpleasant odor. Common hawthorns can grow ten meter tall. The bi-style hawthorn grows no taller than about five meter and blooms a few weeks earlier than the single-style, smells pleasantly; the berries are red and <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/birds\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Birds eat snails, beetles and caterpillars as well as the newly sown beans and the almost-ripe cherries and grapes. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1540300843445{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=\"2577\" 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\"]Birds eat snails, beetles and caterpillars as well as the newly sown&hellip;' class=\"encyclopedia\">birds<\/a> love them.<br>\nAs an ornamental plant, the red-flowering biennial hawthorn &lsquo;Paul&rsquo;s Scarlet&rsquo; is well known. This tree can grow about seven meter tall.<br>\nHawthorns like a not too wet moist clay or loam soil, preferably slightly calcareous and a place in sun or semi-shade. They tolerate pruning well and are therefore often planted as hedges. Prune in winter when the hawthorns have dropped their leaves.<br>\nHawthorns, with their spines, provide safe nesting habitat for songbirds.<br>\nHawthorn, like pear and rowan, is susceptible to <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/fire-blight\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Fire blight is a very contagious plant disease.[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1538138376144{padding-left: 20px !important;}\"]Also known as: Fireblight[\/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=\"1823\" 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\"]Fire blight (Erwinia amylovora). Infectious plant disease and a threat to fruit production. Warm, sweltering weather can trigger an epidemic. Plants&hellip;' class=\"encyclopedia\">fire blight<\/a> <em>(Erwinia amylovora)<\/em>. As a result, many hawthorn hedges have disappeared in the vicinity of orchards. In regions with fruit crops, hawthorns may no longer be planted.[\/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_6381\" aria-describedby=\"caption-attachment-6381\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6381\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp-500x347.jpg\" alt=\"recognize larvae Social Pear Sawfly\" width=\"500\" height=\"347\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp-500x347.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp-1024x710.jpg 1024w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp-768x533.jpg 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perespinselbladwesp.jpg 1038w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-6381\" class=\"wp-caption-text\">Larvae (caterpillars) of the <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/social-pear-sawfly\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Social Pear Sawfly is a 11 to 14 mm large sawfly. [\/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=\"6385\" 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\"]Social Pear Sawfly (Neurotoma saltuum). These 11 to 14 mm large sawflies belong&nbsp; to the family of sawflies (Symphyta). Females are blue-black and males are&hellip;' class=\"encyclopedia\">Social Pear Sawfly<\/a>, photo: Michael G&auml;bler &ndash; CC BY 3.0<\/figcaption><\/figure>\n<p>Late June, early July brownish webbing of <u>+<\/u> 10 cm appear between the leaves. Poop remains hang in the fabric, dark yellow caterpillars crawl around: larvae of the Social <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/pear-sawfly\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]The pear sawfly overwinters as a larva in the ground. In spring, wasps crawl out of the ground after pupating. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1539437905943{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=\"2363\" 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\"]Pear sawfly (Hoplocampa brevis). The pear sawfly overwinters as a larva&hellip;' class=\"encyclopedia\">Pear Sawfly<\/a> <em>(Neurotoma saltuum)<\/em>.<\/p>\n<figure id=\"attachment_6099\" aria-describedby=\"caption-attachment-6099\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Peer_perenbladwesp_rups.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6099\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Peer_perenbladwesp_rups-500x411.jpg\" alt=\"recognize caterpillars on pear tree\" width=\"500\" height=\"411\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Peer_perenbladwesp_rups-500x411.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Peer_perenbladwesp_rups.jpg 720w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-6099\" class=\"wp-caption-text\">Silky webs of a <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/little-ermel\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]The Little Ermel belongs to the ermine moths and is a common species throughout most of Britain and Ireland. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1542126721951{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=\"2969\" 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\"]Little Ermel (Swammerdamia pyrella) belongs to the ermine moths (Yponomeutidae) and is&hellip;' class=\"encyclopedia\">Little Ermel<\/a> in <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/pear-tree\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Pear tree, fruit tree for vegetable and ornamental gardens. [\/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_1627286948150{padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}\" el_id=\"mobiel\"] You are viewing the mobile-adapted version of the page. The one for tablets,&hellip;' class=\"encyclopedia\">pear tree<\/a>, photo: Dennis Schuitema<\/figcaption><\/figure>\n<p>Webbing with orange caterpillars among the leaves: larvae of the Little Ermel <em>(Swammerdamia pyrella)<\/em>, an <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/ermine-moth\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]ermine moths are many: some seven hundred species exist. [\/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=\"2985\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][vc_single_image image=\"2983\" 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\"]Ermine moths (Yponomeutidae) are many: some seven hundred species exist. The Ermine moth is a butterfly whose caterpillars make sturdy webs. These&hellip;' class=\"encyclopedia\">ermine moth<\/a>.<\/p>\n<figure id=\"attachment_6493\" aria-describedby=\"caption-attachment-6493\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-6493\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder-500x333.jpg\" alt=\"recognize spin nests\" width=\"500\" height=\"333\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder-500x333.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder-1024x683.jpg 1024w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder-768x512.jpg 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder-1536x1024.jpg 1536w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Spinselnest_bastaardsatijnvlinder.jpg 2048w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-6493\" class=\"wp-caption-text\">Webbing with caterpillars of the <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/brown-tail-moth\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Brown-tail moth, these three to four cm large moths belong to the tussock moths (Lymantriinae), a family in the superfamily&nbsp;Noctuoidea. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1605712103529{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=\"6487\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\"] The fine, urticating hairs of the caterpillar cannot be seen with the naked&hellip;' class=\"encyclopedia\">Brown-tail moth<\/a> in buckthorn, photo: David Debruyne<\/figcaption><\/figure>\n<p>Large webbings with tiny caterpillars in early spring when the leaves are just sprouting or the webbing in late fall, where the caterpillars overwinter: the larvae (caterpillars) of the Brown-tail moth <em>(Euproctis chrysorrhoea)<\/em>.<\/p>\n<figure id=\"attachment_5959\" aria-describedby=\"caption-attachment-5959\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/GroeneAppeltakluis_.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-5959\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/GroeneAppeltakluis_-500x407.jpg\" alt=\"recognize aphids on apple tree\" width=\"500\" height=\"407\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/GroeneAppeltakluis_-500x407.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/GroeneAppeltakluis_.jpg 720w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-5959\" class=\"wp-caption-text\">Colony of green apple <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/aphids\/\" target=\"_blank\" title=\"[vc_row][vc_column][vc_column_text]Aphids are small, plant-eating insects; see: overview aphids, aphid, black bean aphid, black cherry aphid, catalpa aphid, cabbage aphid, currant blister aphid, green peach aphid, green apple aphid, holly aphid, Hydrangea scale, Scale insect, mealybug, lettuce-root aphid, woolly beech aphid, cypress aphid.[\/vc_column_text][\/vc_column][\/vc_row]\" class=\"encyclopedia\">aphids<\/a> on shoots, photo: Frederik Ceyssens<\/figcaption><\/figure>\n<p>Green aph<wbr><\/wbr>ids on new shoots &ndash; especially in summer. The new shoots curl through the aph<wbr><\/wbr>ids and are somewhat inhibited in growth. In early spring they are only slightly visible: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/green-apple-aphid\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Green apple aphid, these 2.3 mm large green aphids occur on woody crops, such as apple, pear and hawthorn. [\/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=\"5983\" 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\"]Green apple aphid (Aphis pomi). These 2.3 mm large green aphids occur on woody crops such as&hellip;' class=\"encyclopedia\">Green apple aphid<\/a> <em>(Aphis pomi)<\/em>.<\/p>\n<figure id=\"attachment_8765\" aria-describedby=\"caption-attachment-8765\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Penseelkever-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-8765\" src=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Penseelkever-1-500x442.jpg\" alt=\"recognize Eurasian bee beetle\" width=\"500\" height=\"442\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Penseelkever-1-500x442.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Penseelkever-1.jpg 720w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-8765\" class=\"wp-caption-text\">Eur<wbr><\/wbr>asian bee beetle, photo: Jurgen Holvoet<\/figcaption><\/figure>\n<p>The soft parts of the white flowers are eaten:&nbsp;<a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/eurasian-bee-beetle\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Eurasian bee beetle, this nearly one and a half cm large beetle is hairy and belongs to the scarab beetles.[\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1561386120778{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=\"4241\" 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\"]Eurasian bee beetle (Trichius fasciatus). This nearly one and a half-inch beetle&hellip;' class=\"encyclopedia\">Eurasian bee beetle<\/a>&nbsp;<em>(Trichius fasciatus)<\/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_1823\" aria-describedby=\"caption-attachment-1823\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1823\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear-500x375.png\" alt=\"\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear-500x375.png 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear-768x576.png 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear-1024x768.png 1024w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Fire_blight_Erwinia_amylovora_of_pear.png 1138w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-1823\" class=\"wp-caption-text\">Fire blight in pear, photo: Ninjatacoshell &ndash; CC BY-SA 3.0<\/figcaption><\/figure>\n<p>Blossom, leaf, branch and twig turn brown-black and shrivel, thickened spots: Fire blight <em>(Erwinia amylovora)<\/em>.<\/p>\n<figure id=\"attachment_2203\" aria-describedby=\"caption-attachment-2203\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Perenroest_.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2203\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Perenroest_-500x375.jpg\" alt=\"\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perenroest_-500x375.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perenroest_-768x576.jpg 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perenroest_-1024x768.jpg 1024w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Perenroest_.jpg 1200w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-2203\" class=\"wp-caption-text\">Rust fungus, photo: Titico &ndash; Public Domain<\/figcaption><\/figure>\n<p>Dark orange spots with brown centers on the leaves, these turn to red and grow into an orange bump: Rust fungus <em>(Gymnosporangium clavariiforme)<\/em>.<\/p>\n<figure id=\"attachment_5911\" aria-describedby=\"caption-attachment-5911\" style=\"width: 500px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Appelblad_appelschurft.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-5911\" src=\"https:\/\/plantenplagen.nl\/wp-content\/uploads\/Appelblad_appelschurft-500x469.jpg\" alt=\"recognize apple scab\" width=\"500\" height=\"469\" srcset=\"https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Appelblad_appelschurft-500x469.jpg 500w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Appelblad_appelschurft-768x721.jpg 768w, https:\/\/www.plantenplagen.nl\/wp-content\/uploads\/Appelblad_appelschurft.jpg 818w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\"><\/a><figcaption id=\"caption-attachment-5911\" class=\"wp-caption-text\">Light green matte spots on leaves due to <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/apple-scab\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Apple scab occurs mainly in moist places and areas with a lot of rain. [\/vc_column_text][\/vc_column][vc_column width=\"1\/3\"][vc_column_text el_id=\"entrytxt\" el_class=\"entrytxt\" css=\".vc_custom_1540135043963{padding-left: 20px !important;}\"]The same fungus species causes pear scab (Venturia pirina) .[\/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=\"4707\" img_size=\"medium\" add_caption=\"yes\" style=\"vc_box_rounded\" onclick=\"img_link_large\"][vc_single_image image=\"4705\" 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\"]Apple scab -&hellip;' class=\"encyclopedia\">apple scab<\/a>, photo: CC0 Public Domain<\/figcaption><\/figure>\n<p>From light green to brown discolouring spots on the leaf, apples do not grow, get dark spots with star-shaped cracks: apple scab <em>(Venturia inaequalis)<\/em> .<\/p>\n<p>Leaves take on a silvery sheen: <a href=\"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/silver-leaf\/\" target=\"_blank\" title='[vc_row][vc_column width=\"2\/3\"][vc_column_text el_id=\"topentry\" el_class=\"topentry\"]Silver leaf is caused by the purple lichen fungus that gives the leaves of prunus species the characteristic silvery sheen when damaged. [\/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=\"2299\" 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\"]Silver leaf (Chondrostereum purpureum). Purple lichen fungus that gives the leaves of prunus species&hellip;' class=\"encyclopedia\">silver leaf<\/a> <em>(Chondrostereum purpureum).<\/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;]Prevent premature leaf fall due to too wet soil, which can cause roots to rot. Ensure good drainage and loosen the soil deeply.[\/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-13343","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-category-ornamental-garden"],"_links":{"self":[{"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia\/13343","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=13343"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/categories?post=13343"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/tags?post=13343"},{"taxonomy":"encyclopedia-category","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-category?post=13343"},{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.plantenplagen.nl\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=13343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}