{"id":9145,"date":"2018-09-20T11:24:01","date_gmt":"2018-09-20T15:24:01","guid":{"rendered":"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/?p=9145"},"modified":"2018-09-21T11:44:21","modified_gmt":"2018-09-21T15:44:21","slug":"time-to-harvest-sweet-potatoes","status":"publish","type":"post","link":"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/time-to-harvest-sweet-potatoes\/","title":{"rendered":"Time to Harvest Sweet Potatoes"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9095\" src=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner.jpg\" alt=\"\" width=\"1683\" height=\"544\" srcset=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner.jpg 1683w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner-300x97.jpg 300w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner-768x248.jpg 768w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner-1024x331.jpg 1024w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner-652x211.jpg 652w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner-31x10.jpg 31w\" sizes=\"auto, (max-width: 1683px) 100vw, 1683px\" \/><\/p>\n<div id=\"attachment_9149\" style=\"width: 310px\" class=\"wp-caption alignright\"><a  href=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant.jpg\" data-rel=\"lightbox-gallery-0\" data-rl_title=\"Sweet potato plants ready to harvest at end of summer. Photo by Rosie Lerner, Purdue Extension\" data-rl_caption=\"\" title=\"Sweet potato plants ready to harvest at end of summer. Photo by Rosie Lerner, Purdue Extension\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9149\" class=\"size-medium wp-image-9149\" src=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-300x225.jpg\" alt=\"Sweet potato plants\/vines showing the green leaves, ready to harvest at end of summer\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-300x225.jpg 300w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-768x576.jpg 768w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-1024x768.jpg 1024w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-313x235.jpg 313w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoplant-31x23.jpg 31w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-9149\" class=\"wp-caption-text\">Sweet potato plants ready to harvest at end of summer.<br \/><em>Photo by Rosie Lerner, Purdue Extension<\/em><\/p><\/div>\n<p>Although some folks may be sad to see summer coming to a close, many gardeners are looking forward to harvesting their sweet potato treasures.<\/p>\n<p>Sweet potatoes are warm-season plants that are very sensitive to cold temperatures. The tuberous roots should be harvested by the time frost kills the vines or soon thereafter. Sweet potato roots continue to grow until frost kills the vines. Roots can be left in the ground for a short while; however, a hard frost can cause damage to roots near the surface. Chilling injury also results to roots when soil temperatures drop to 50\u00b0F or lower, and this can result in internal decay in storage. The greatest danger from delayed digging is the risk of cold, wet soil encouraging decay of the roots.<\/p>\n<p>Depending on how early you were able to plant, you may find an assortment of \u201cbaby baker\u201d or smaller roots, as well as full-size potatoes. Although you can cook newly dug sweet potatoes right away, their flavor and storage quality are greatly improved by curing at warm temperatures first. It is during the curing process that starch is converted to sugar.<\/p>\n<div id=\"attachment_9148\" style=\"width: 310px\" class=\"wp-caption alignleft\"><a  href=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots.jpg\" data-rel=\"lightbox-gallery-0\" data-rl_title=\"Curing sweet potato roots improves flavor and storage life. Photo by Rosie Lerner, Purdue Extension\" data-rl_caption=\"\" title=\"Curing sweet potato roots improves flavor and storage life. Photo by Rosie Lerner, Purdue Extension\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-9148\" class=\"size-medium wp-image-9148\" src=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-300x225.jpg\" alt=\"Image of a bin of harvested sweet potato roots showing various sizes\/shapes.\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-300x225.jpg 300w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-768x576.jpg 768w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-1024x768.jpg 1024w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-313x235.jpg 313w, https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/09\/sweetpotatoroots-31x23.jpg 31w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-9148\" class=\"wp-caption-text\">Curing sweet potato roots improves flavor and storage life.<br \/>Photo by Rosie Lerner, Purdue Extension<\/p><\/div>\n<p>Care should be taken during digging and handling to avoid skinning and bruising the roots. Even a small wound can easily become infected with decay organisms. Line containers with rags or other soft material, if possible, to avoid scratching the roots. Do not store badly injured or diseased roots. Although large amounts of soil clinging to roots during storage is not desirable, sweet potatoes are easily damaged during the washing process when freshly dug. Allow roots to dry and cure before removing excess soil.<\/p>\n<p>Cure sweet potatoes by holding them for about 10 days at 80-85\u00b0F and high relative humidity (85-90 percent). In the absence of better facilities, they can be cured between 65-75\u00b0F for 2-3 weeks. To maintain the required high humidity (85-90 percent relative humidity), stack storage crates or boxes and cover them with paper or heavy cloth. Packing in perforated plastic bags will also keep humidity high, yet the perforations will allow excess moisture to escape.<\/p>\n<p>Once the sweet potatoes are cured, move them to a dark location where a temperature of about 55-60\u00b0F can be maintained during storage. Sweet potatoes are subject to chilling injury, so keep them out of the refrigerator. Outdoor pits are not recommended for storage because the dampness encourages decay. Good results can be obtained by wrapping cured sweet potatoes in newspaper and storing them in a cool closet.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Although some folks may be sad to see summer coming to a close, many gardeners are looking forward to harvesting their sweet potato treasures. Sweet potatoes are warm-season plants that are very sensitive to cold temperatures. The tuberous roots should be harvested by the time frost kills the vines or soon thereafter. Sweet potato roots continue to grow until frost kills the vines. Roots can be left in the ground for a short while;&#8230;<span id=\"post-label-9145\" class=\"sr-only\">Read more about Time to Harvest Sweet Potatoes<\/span><a class=\"read-more\" href=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/time-to-harvest-sweet-potatoes\/\" aria-labelledby=\"post-label-9145\">[Read More]<\/a><\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,15,19,26],"tags":[],"coauthors":[46],"class_list":["post-9145","post","type-post","status-publish","format-standard","hentry","category-autumnfall","category-gardening","category-plants","category-vegetables","publication-autumn-gardening-stories","publication-yard-and-garden-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Time to Harvest Sweet Potatoes - Indiana Yard and Garden - Purdue Consumer Horticulture<\/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.purdue.edu\/hla\/sites\/yardandgarden\/time-to-harvest-sweet-potatoes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Time to Harvest Sweet Potatoes - Indiana Yard and Garden - Purdue Consumer Horticulture\" \/>\n<meta property=\"og:description\" content=\"&nbsp; Although some folks may be sad to see summer coming to a close, many gardeners are looking forward to harvesting their sweet potato treasures. Sweet potatoes are warm-season plants that are very sensitive to cold temperatures. The tuberous roots should be harvested by the time frost kills the vines or soon thereafter. Sweet potato roots continue to grow until frost kills the vines. Roots can be left in the ground for a short while;...Read more about Time to Harvest Sweet Potatoes[Read More]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/time-to-harvest-sweet-potatoes\/\" \/>\n<meta property=\"og:site_name\" content=\"Indiana Yard and Garden - Purdue Consumer Horticulture\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Purdue-Home-Hort-716960998353855\/\" \/>\n<meta property=\"article:published_time\" content=\"2018-09-20T15:24:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2018-09-21T15:44:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.purdue.edu\/hla\/sites\/yardandgarden\/wp-content\/uploads\/sites\/2\/2018\/08\/Yard_Garden_News_Banner.jpg\" \/>\n<meta name=\"author\" content=\"Rosie Lerner\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@PurdueHomeHort\" \/>\n<meta name=\"twitter:site\" content=\"@PurdueHomeHort\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Rosie Lerner\" \/>\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.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/\"},\"author\":{\"name\":\"Rosie Lerner\",\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/#\\\/schema\\\/person\\\/477baba12dde3a697415f60d785c9b1b\"},\"headline\":\"Time to Harvest Sweet Potatoes\",\"datePublished\":\"2018-09-20T15:24:01+00:00\",\"dateModified\":\"2018-09-21T15:44:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/\"},\"wordCount\":469,\"publisher\":{\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2018\\\/08\\\/Yard_Garden_News_Banner.jpg\",\"articleSection\":[\"Autumn\\\/Fall\",\"Gardening\",\"Plants\",\"Vegetables\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/\",\"url\":\"https:\\\/\\\/www.purdue.edu\\\/hla\\\/sites\\\/yardandgarden\\\/time-to-harvest-sweet-potatoes\\\/\",\"name\":\"Time to Harvest Sweet Potatoes - 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