{"id":18402,"date":"2025-11-04T09:00:55","date_gmt":"2025-11-04T13:00:55","guid":{"rendered":"https:\/\/www.purdue.edu\/fnr\/extension\/?p=18402"},"modified":"2026-04-21T12:48:11","modified_gmt":"2026-04-21T16:48:11","slug":"why-do-our-trees-go-from-green-leaves-to-different-colors","status":"publish","type":"post","link":"https:\/\/www.purdue.edu\/fnr\/extension\/why-do-our-trees-go-from-green-leaves-to-different-colors\/","title":{"rendered":"Why Do Our Trees Go From Green Leaves to Different Colors?"},"content":{"rendered":"<p>Several things come into play when it comes to determining the colors that we find on leaves of our trees. As our days get shorter and our nights get longer there is a chemical change that happens in the tree. In this video Lenny Farlee talks about the several pigments that are found in trees and what changes from summer to fall that brings us the bright colors on leaves.<\/p>\n<p><iframe loading=\"lazy\" title=\"Fall Color Pigments\" width=\"670\" height=\"377\" src=\"https:\/\/www.youtube.com\/embed\/ql4hkf-rIkk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><strong>Explore IndyStar Story Behind Our Fall Colors<\/strong><br \/>\nFor more on what determines the specific colors our leaves turn and how weather and other factors influence the fall display check out this recent <em>IndyStar arti<\/em>cle: <a href=\"https:\/\/www.indystar.com\/story\/news\/environment\/2025\/10\/28\/what-determines-what-color-leaves-turn-in-the-fall\/86713397007\/\" target=\"_blank\" rel=\"noopener\">What determines what color leaves turn in the fall?<\/a> The story features insights from Lenny Farlee, Purdue Extension forester, who shares his expertise on the science and beauty behind Indiana\u2019s fall foliage.<\/p>\n<p><strong>Fall Foliage by Tree Species <\/strong><em>(click on the image to expand)<\/em><\/p>\n<div class=\"row text-center mx-0\">\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900.jpg\" data-rel=\"lightbox-image-0\" data-rl_title=\"blackgum-w900\" data-rl_caption=\"blackgum-w900\" title=\"blackgum-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34895\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900-500x375.jpg\" alt=\"Blackgum red leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackgum-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Blackgum<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900.jpg\" data-rel=\"lightbox-image-1\" data-rl_title=\"blackhaw-w900\" data-rl_caption=\"blackhaw-w900\" title=\"blackhaw-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34896\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900-500x375.jpg\" alt=\"Blackhaw tree with red leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/blackhaw-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Blackhaw<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900.jpg\" data-rel=\"lightbox-image-2\" data-rl_title=\"northern-red-oak-w900\" data-rl_caption=\"northern-red-oak-w900\" title=\"northern-red-oak-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34897\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900-500x375.jpg\" alt=\"Northern red oak tree with orange and yellow leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/northern-red-oak-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Northern red oak<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900.jpg\" data-rel=\"lightbox-image-3\" data-rl_title=\"sassafras-w900\" data-rl_caption=\"sassafras-w900\" title=\"sassafras-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34900\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900-500x375.jpg\" alt=\"Sassafras tree with red leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sassafras-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Sassafras<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900.jpg\" data-rel=\"lightbox-image-4\" data-rl_title=\"shagbark-hickory-w900\" data-rl_caption=\"shagbark-hickory-w900\" title=\"shagbark-hickory-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34901\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900-500x375.jpg\" alt=\"Shagbark hickory tree with orange leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/shagbark-hickory-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Shagbark hickory<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900.jpg\" data-rel=\"lightbox-image-5\" data-rl_title=\"sugar-maple-orange-w900\" data-rl_caption=\"sugar-maple-orange-w900\" title=\"sugar-maple-orange-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34903\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900-500x375.jpg\" alt=\"Sugar maple tree with orange leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-orange-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Sugar maple (orange)<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900.jpg\" data-rel=\"lightbox-image-6\" data-rl_title=\"sugar-maple-yellow-w900\" data-rl_caption=\"sugar-maple-yellow-w900\" title=\"sugar-maple-yellow-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34902\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900-500x375.jpg\" alt=\"Sugr maple tree with yellow leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sugar-maple-yellow-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Sugar maple (yellow)<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900.jpg\" data-rel=\"lightbox-image-7\" data-rl_title=\"sweetgum-w900\" data-rl_caption=\"sweetgum-w900\" title=\"sweetgum-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34904\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900-500x375.jpg\" alt=\"Sweetgum tree with red leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/sweetgum-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Sweetgum<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900.jpg\" data-rel=\"lightbox-image-8\" data-rl_title=\"white-ash-w900\" data-rl_caption=\"white-ash-w900\" title=\"white-ash-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34905\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900-500x375.jpg\" alt=\"White ask tree with red and yellow leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-ash-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>White ash<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900.jpg\" data-rel=\"lightbox-image-9\" data-rl_title=\"white-oak-w900\" data-rl_caption=\"white-oak-w900\" title=\"white-oak-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34906\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900-375x500.jpg\" alt=\"White oak tree with orange leaves in the fall.\" width=\"375\" height=\"500\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900-375x500.jpg 375w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900-768x1024.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900-250x333.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/white-oak-w900.jpg 900w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/a><figcaption>White oak<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900.jpg\" data-rel=\"lightbox-image-10\" data-rl_title=\"winged-sumac-w900\" data-rl_caption=\"winged-sumac-w900\" title=\"winged-sumac-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34907\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900-500x375.jpg\" alt=\"Winged sumac tree with red leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/winged-sumac-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Winged sumac<\/figcaption><\/figure>\n<\/div>\n<div class=\"col-md-4 mb-4\">\n<figure><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900.jpg\" data-rel=\"lightbox-image-11\" data-rl_title=\"yellow-birch-w900\" data-rl_caption=\"yellow-birch-w900\" title=\"yellow-birch-w900\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-34908\" src=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900-500x375.jpg\" alt=\"Birch tree with yellow leaves in the fall.\" width=\"500\" height=\"375\" srcset=\"https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900-500x375.jpg 500w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900-768x576.jpg 768w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900-250x188.jpg 250w, https:\/\/www.purdue.edu\/fnr\/extension\/wp-content\/uploads\/2021\/09\/yellow-birch-w900.jpg 900w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption>Yellow birch<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p><strong>Resources:<\/strong><br \/>\n<a href=\"https:\/\/www.explorefall.com\/states\/indiana.html\" target=\"_blank\" rel=\"noopener\">Indiana Fall Foliage Map<\/a>, Explore Fall<br \/>\n<a title=\"Why Fall Color is Sometimes a Dud\" href=\"https:\/\/www.purduelandscapereport.org\/article\/why-fall-color-is-sometimes-a-dud\/\" target=\"_blank\" rel=\"noopener\">Why Fall Color is Sometimes a Dud<\/a>, Purdue Landscape Report<br \/>\n<a title=\"U.S. Forest Service Website and Hotline\" href=\"https:\/\/www.usda.gov\/media\/blog\/2012\/09\/12\/us-forest-service-website-and-hotline-highlight-fall-colors-national-forests\" target=\"_blank\" rel=\"noopener\">U.S. Forest Service Website and Hotline<\/a>, Highlight Fall Colors on National Forests<br \/>\n<a title=\"ID That Tree Fall Color: Sugar Maple\" href=\"https:\/\/youtu.be\/3y2nsrxFtzs\" target=\"_blank\" rel=\"noopener\">ID That Tree Fall Color: Sugar Maple<\/a>, Purdue Extension &#8211; Forestry and Natural Resources YouTube Channel, ID That Tree Playlist<br \/>\n<a title=\"ID That Tree Fall Color Edition: Black Gum\" href=\"https:\/\/youtu.be\/QnZjII0nRM0\" target=\"_blank\" rel=\"noopener\">ID That Tree Fall Color Edition: Black Gum<\/a>, Purdue Extension &#8211; FNR YouTube Channel, ID That Tree Playlist<br \/>\n<a title=\"ID That Tree Fall Color Edition: Shagbark Hickory\" href=\"https:\/\/youtu.be\/RhTwUHOTl20\" target=\"_blank\" rel=\"noopener\">ID That Tree Fall Color Edition: Shagbark Hickory<\/a>, Purdue Extension &#8211; FNR YouTube Channel, ID That Tree Playlist<br \/>\n<a title=\"ID That Tree Fall Color Edition: Virginia Creeper\" href=\"https:\/\/youtu.be\/l8gyk5GtZu0\" target=\"_blank\" rel=\"noopener\">ID That Tree Fall Color Edition: Virginia Creeper<\/a>, Purdue Extension &#8211; FNR YouTube Channel, ID That Tree Playlist<br \/>\n<a title=\"ID That Tree Fall Color Edition: Winged Sumac\" href=\"https:\/\/youtu.be\/MXxSZsOvhz0\" target=\"_blank\" rel=\"noopener\">ID That Tree Fall Color Edition: Winged Sumac<\/a>, Purdue Extension &#8211; FNR YouTube Channel, ID That Tree Playlist<br \/>\n<a title=\"Autumn Highlights Tour - South Campus\" href=\"https:\/\/mlp.arboretum.purdue.edu\/weboi\/oecgi3.exe\/INET_ECM_DispTour?TOURCODE=AUTUMN_WALK_SOUT#.YUt2h-d7mUk\" target=\"_blank\" rel=\"noopener\">Autumn Highlights Tour &#8211; South Campus<\/a>, Purdue Arboretum Explorer<br \/>\n<a title=\"Why Leaves Change Color - the Physiological Basis\" href=\"https:\/\/edustore.purdue.edu\/fnr-faq-5-w.html\" target=\"_blank\" rel=\"noopener\">Why Leaves Change Color &#8211; the Physiological Basis<\/a>, The Education Store, Purdue Extension resource center<br \/>\n<a href=\"https:\/\/www.youtube.com\/playlist?list=PLgoGnq-fak7V9w3jf2Sj_6-pNaw4sX4Ga\" target=\"_blank\" rel=\"noopener noreferrer\">ID That Tree<\/a>, Playlist, Subscribe to Purdue Extension \u2013 Forestry and Natural Resources YouTube Channel<\/p>\n<p><a href=\"https:\/\/www.purdue.edu\/fnr\/extension\/contact-us\/directory\/lenny-d-farlee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Lenny Farlee<\/a>, Extension Forester<br \/>\nPurdue University Department of Forestry and Natural Resources<br \/>\n<a href=\"https:\/\/htirc.org\/\" target=\"_blank\" rel=\"noopener\">Hardwood Tree Improvement &amp; Regeneration Center (HTIRC)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Several things come into play when it comes to determining the colors that we find on leaves of our trees. As our days get shorter and our nights get longer there is a chemical change that happens in the tree. In this video Lenny Farlee talks about the several pigments that are found in trees [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,80,53,622],"tags":[1503,751,147,565,460,1502,257],"class_list":["post-18402","post","type-post","status-publish","format-standard","hentry","category-forestry","category-trees","category-urbanforestry","category-woodlands","tag-chlorophyll","tag-fall-color","tag-forestry-and-natural-resources","tag-hardwoods","tag-leaves","tag-pigments","tag-purdue-extension","audience-for-enthusiasts","audience-for-homeowners","audience-for-landowners","audience-for-professionals"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/posts\/18402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/comments?post=18402"}],"version-history":[{"count":24,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/posts\/18402\/revisions"}],"predecessor-version":[{"id":34911,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/posts\/18402\/revisions\/34911"}],"wp:attachment":[{"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/media?parent=18402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/categories?post=18402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.purdue.edu\/fnr\/extension\/wp-json\/wp\/v2\/tags?post=18402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}