{"id":116,"date":"2025-09-24T16:49:51","date_gmt":"2025-09-24T20:49:51","guid":{"rendered":"https:\/\/www.clarku.edu\/hadwen-arboretum\/?p=116"},"modified":"2025-09-25T17:22:04","modified_gmt":"2025-09-25T21:22:04","slug":"black-oak","status":"publish","type":"post","link":"https:\/\/www.clarku.edu\/hadwen-arboretum\/trees\/black-oak\/","title":{"rendered":"Black Oak"},"content":{"rendered":"\n<div class=\"wp-block-columns sidebar is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50rem\">\n<h2 class=\"wp-block-heading\"><em><em><em>Quercus velutina<\/em><\/em><\/em><\/h2>\n\n\n\n<p class=\"is-style-intro\">The black oak\u2019s inner bark contains a yellow pigment called quercitron, which is why historically black oak was called yellow oak.<\/p>\n\n\n\n<aside class=\"wp-block-group boxout has-light-green-background-color has-background is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-12dd3699 wp-block-group-is-layout-constrained\">\n<h4 class=\"wp-block-heading\">Location<\/h4>\n\n\n\n<p>Today, there are over fifty black oak growing in the arboretum. Take a walk along Larch Lane Trail and find them in abundance along May Street.<\/p>\n<\/aside>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50rem\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"846\" height=\"564\" src=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/black-oak-leaf-846x564-1.jpg\" alt=\"\" class=\"wp-image-118\" srcset=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/black-oak-leaf-846x564-1.jpg 846w, https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/black-oak-leaf-846x564-1-300x200.jpg 300w, https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/black-oak-leaf-846x564-1-768x512.jpg 768w\" sizes=\"auto, (max-width: 846px) 100vw, 846px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:4rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group alignfull section-intro has-light-warm-gray-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-stretch is-layout-flow wp-block-column-is-layout-flow\">\n<div style=\"background-image:url(&apos;https:\/\/www.clarku.edu\/hadwen-arboretum\/wp-content\/uploads\/sites\/97\/black-oak-tree.jpg&apos;);background-position:50% 50%;background-size:cover;\" class=\"wp-block-group padded lifted has-white-background-color has-background wp-container-content-69bc4bdf is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"height:25.625rem\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-group padded has-charcoal-color has-text-color has-link-color wp-elements-8ada4029326c17dc678854bfb006f67b is-layout-constrained wp-block-group-is-layout-constrained\">\n<h3 class=\"wp-block-heading\">History at Hadwen<\/h3>\n\n\n\n<p class=\"intro has-medium-font-size\">Whilst we don\u2019t have specific documents showing that Hadwen planted black oak on the property, in 1900 he writes that he has various oak trees \u201cof nature\u2019s planting\u201d up to four feet in diameter and sixty feet spread of limb. A preliminary report on trees in the arboretum documents the black oak growing here since at least 1971.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group section is-layout-constrained wp-block-group-is-layout-constrained\"><div style=\"color:var(--clarku-color-green)\" class=\"eyebrow  has-text-align-left\">Keep learning<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Detailed species information<\/h3>\n\n\n\n<p>Black oak, sometimes called eastern black oak, is a deciduous tree in the red oak group in the family Fagaceae. These oaks are found widely across eastern and central North America. Depending on the region, black oak varies in size and diameter. In its northern range, black oak typically reaches a height of 66\u201382 feet (20\u201325 meters) and a diameter of 3 feet (0.9 meters), but can grow considerably taller and wider in its southern range. The leaves of the black oak have 5\u20137 tri-tipped lobes separated by deep U-shaped notches. Black oak is a monoecious species, producing male and female seeds on a single plant.<\/p>\n\n\n\n<p>After about 20 years, black oaks reach maturity and begin to produce acorns, large, round nuts with a cap covering slightly less than half of the nut. These seeds are typically dispersed by small mammals and some larger birds like bluejays. The inner bark of black oak contains a yellow pigment called quercitron, which historically led to black oak being called yellow oak. Typically, black oak grows best in well-drained but moist loam, clay, or soil due to its origination from regions with glacial deposits, sandstones, limestone, and shales.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Quercus velutina The black oak\u2019s inner bark contains a yellow pigment called quercitron, which is why historically black oak was called yellow oak. Location Today, there are over fifty black oak growing in the arboretum. Take a walk along Larch Lane Trail and find them in abundance along May Street. History at Hadwen Whilst we [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":118,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[5],"tags":[],"class_list":["post-116","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-trees"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Black Oak | Hadwen Arboretum | Clark University<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.clarku.edu\/hadwen-arboretum\/trees\/black-oak\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Black Oak\" \/>\n<meta property=\"og:description\" content=\"Quercus velutina The black oak\u2019s inner bark contains a yellow pigment called quercitron, which is why historically black oak was called yellow oak. 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content=\"@clarkuniversity\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Carol D&#039;Onofrio\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.clarku.edu\\\/hadwen-arboretum\\\/trees\\\/black-oak\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.clarku.edu\\\/hadwen-arboretum\\\/trees\\\/black-oak\\\/\"},\"headline\":\"Black 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