{"id":12675,"date":"2025-10-10T13:57:01","date_gmt":"2025-10-10T17:57:01","guid":{"rendered":"https:\/\/extension.umaine.edu\/highmoor\/?p=12675"},"modified":"2025-10-10T13:57:01","modified_gmt":"2025-10-10T17:57:01","slug":"tree-fruit-maturity-report-october-9-2025","status":"publish","type":"post","link":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/","title":{"rendered":"Tree Fruit Maturity Report — October 9, 2025"},"content":{"rendered":"

Maturity Report<\/h3>\n

Many of us now grow varieties that ripen very late but are vulnerable to the first freeze in fall. A freeze is expected tomorrow morning in some locations. Predicted low temperatures for the Monmouth area are expected to be around 30 \u00baF, but it could get colder in low-lying areas. The temperature may not be cold enough to freeze apples if it remains above 29 \u00baF since the sugars can lower the freezing point within the fruit. If apples freeze, it\u2019s best to let them thaw first before harvesting them. They will have a short storage life and will lose some firmness.<\/p>\n

Apples<\/h4>\n

Golden Delicious <\/strong>apples have changed from green to yellow in most fruits indicating that they will soon no longer be appropriate for long-term storage. A few fruits remain green, and these should be ok in long-term storage. They become over-mature for storage when starch index is past 6.0.<\/p>\n

Fuji <\/strong>starch index and DA changed very little in the last week, but this variety has developed enough flavor and can be picked for long-term storage. The flesh has remained very dense which could be a problem in CA storage with its low oxygen. They become over-mature for storage when starch index is past 6.5.<\/p>\n

Evercrisp <\/strong>starch index has not changed since last week, but good flavor has developed. They should be ok for storage, but all my apples have a mild case of watercore. This means they are at risk of developing internal browning in long-term storage but should be ok for a short storage period of one month.<\/p>\n

\n\n\n\n\n\n\n\n
\n

Starch Index and Delta Absorbance at University of Maine’s Highmoor Farm.<\/strong><\/h4>\n<\/caption>\n

Variety<\/th>\nStarch Index 9\/19\/25<\/th>\nDA 9\/19\/25<\/th>\nStarch Index 9\/26\/25<\/th>\nDA 9\/26\/25<\/th>\nStarch Index 10\/2\/25<\/th>\nDA 10\/2\/25<\/th>\nStarch Index 10\/9\/25<\/th>\nDA 10\/9\/25<\/th>\n<\/tr>\n<\/thead>\n
Fuji<\/td>\n2.3<\/td>\n1.79<\/td>\n2.2<\/td>\n1.75<\/td>\n2.5<\/td>\n1.57<\/td>\n2.4<\/td>\n1.55<\/td>\n<\/tr>\n
Golden Delicious<\/td>\n1.5<\/td>\n1.65<\/td>\n3.5<\/td>\n1.57<\/td>\n4.5<\/td>\n1.18<\/td>\n5.6<\/td>\n1.04<\/td>\n<\/tr>\n
Evercrisp<\/td>\n1.2<\/td>\n1.36<\/td>\n1.4<\/td>\n1.23<\/td>\n1.9<\/td>\n1.10<\/td>\n2.0<\/td>\n0.98<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* DA stands for Delta Absorbance and is a measure of chlorophyll breakdown in the peel which parallels ripening. Numbers decrease as fruits ripen.<\/p>\n

Additional Resource<\/h3>\n

Variety-specific starch indices for determining when to harvest can be found at this Michigan State Univ. Extension website: MSU Starch Scale – Booklet rev 02A<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

Renae Moran<\/p>\n

University of Maine Cooperative Extension: Tree Fruits<\/a><\/p>\n

PO Box 179<\/p>\n

Monmouth, ME 04259<\/p>\n

(207) 933-2100<\/p>\n

rmoran@maine.edu<\/a><\/p>\n

\n

Mention of a trademark, proprietary product, or vendor does not constitute a guarantee or warranty of the product, nor does it imply approval or disapproval to the exclusion of other products or vendors that may also be suitable. <\/em><\/p>\n

The University of Maine System (the System) is an equal opportunity institution committed to fostering a nondiscriminatory environment and complying with all applicable nondiscrimination laws. Consistent with State and Federal law, the System does not discriminate on the basis of race, color, religion, sex, sexual orientation, transgender status, gender, gender identity or expression, ethnicity, national origin, citizenship status, familial status, ancestry, age, disability (physical or mental), genetic information, pregnancy, or veteran or military status in any aspect of its education, programs and activities, and employment. The System provides reasonable accommodations to qualified individuals with disabilities upon request. If you believe you have experienced discrimination or harassment, you are encouraged to contact the System Office of Equal Opportunity and Title IX Services at 5713 Chadbourne Hall, Room 412, Orono, ME 04469-5713, by calling 207.581.1226, or via TTY at 711 (Maine Relay System). For more information about Title IX or to file a complaint, please contact the UMS Title IX Coordinator at www.maine.edu\/title-ix\/.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Maturity Report Many of us now grow varieties that ripen very late but are vulnerable to the first freeze in fall. A freeze is expected tomorrow morning in some locations. Predicted low temperatures for the Monmouth area are expected to be around 30 \u00baF, but it could get colder in low-lying areas. The temperature may […]<\/p>\n","protected":false},"author":201,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[182],"tags":[],"class_list":["post-12675","post","type-post","status-publish","format-standard","hentry","category-tree-fruit-newsletter"],"yoast_head":"\nTree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension<\/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:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Maturity Report Many of us now grow varieties that ripen very late but are vulnerable to the first freeze in fall. A freeze is expected tomorrow morning in some locations. Predicted low temperatures for the Monmouth area are expected to be around 30 \u00baF, but it could get colder in low-lying areas. The temperature may […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\" \/>\n<meta property=\"og:site_name\" content=\"Cooperative Extension at Highmoor Farm\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-10T17:57:01+00:00\" \/>\n<meta name=\"author\" content=\"swright\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"swright\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\"},\"author\":{\"name\":\"swright\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c\"},\"headline\":\"Tree Fruit Maturity Report — October 9, 2025\",\"datePublished\":\"2025-10-10T17:57:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\"},\"wordCount\":562,\"articleSection\":[\"Tree Fruit Newsletter\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\",\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\",\"name\":\"Tree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension\",\"isPartOf\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#website\"},\"datePublished\":\"2025-10-10T17:57:01+00:00\",\"author\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c\"},\"breadcrumb\":{\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/extension.umaine.edu\/highmoor\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Tree Fruit Maturity Report — October 9, 2025\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#website\",\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/\",\"name\":\"Cooperative Extension at Highmoor Farm\",\"description\":\"Information you can use. Research you can trust.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/extension.umaine.edu\/highmoor\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c\",\"name\":\"swright\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g\",\"caption\":\"swright\"},\"url\":\"https:\/\/extension.umaine.edu\/highmoor\/author\/swright\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Tree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/","og_locale":"en_US","og_type":"article","og_title":"Tree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension","og_description":"Maturity Report Many of us now grow varieties that ripen very late but are vulnerable to the first freeze in fall. A freeze is expected tomorrow morning in some locations. Predicted low temperatures for the Monmouth area are expected to be around 30 \u00baF, but it could get colder in low-lying areas. The temperature may […]","og_url":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/","og_site_name":"Cooperative Extension at Highmoor Farm","article_published_time":"2025-10-10T17:57:01+00:00","author":"swright","twitter_card":"summary_large_image","twitter_misc":{"Written by":"swright","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#article","isPartOf":{"@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/"},"author":{"name":"swright","@id":"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c"},"headline":"Tree Fruit Maturity Report — October 9, 2025","datePublished":"2025-10-10T17:57:01+00:00","mainEntityOfPage":{"@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/"},"wordCount":562,"articleSection":["Tree Fruit Newsletter"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/","url":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/","name":"Tree Fruit Maturity Report - October 9, 2025 - Cooperative Extension at Highmoor Farm - University of Maine Cooperative Extension","isPartOf":{"@id":"https:\/\/extension.umaine.edu\/highmoor\/#website"},"datePublished":"2025-10-10T17:57:01+00:00","author":{"@id":"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c"},"breadcrumb":{"@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/extension.umaine.edu\/highmoor\/2025\/10\/10\/tree-fruit-maturity-report-october-9-2025\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/extension.umaine.edu\/highmoor\/"},{"@type":"ListItem","position":2,"name":"Tree Fruit Maturity Report — October 9, 2025"}]},{"@type":"WebSite","@id":"https:\/\/extension.umaine.edu\/highmoor\/#website","url":"https:\/\/extension.umaine.edu\/highmoor\/","name":"Cooperative Extension at Highmoor Farm","description":"Information you can use. Research you can trust.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/extension.umaine.edu\/highmoor\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/extension.umaine.edu\/highmoor\/#\/schema\/person\/820653c187b608883de680eb1114cf9c","name":"swright","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/5a8e782b2f662bce47c27662e4f3450070411da425d0295f06495571d4d842e5?s=96&d=mm&r=g","caption":"swright"},"url":"https:\/\/extension.umaine.edu\/highmoor\/author\/swright\/"}]}},"taxonomy_info":{"category":[{"value":182,"label":"Tree Fruit Newsletter"}]},"featured_image_src_large":false,"author_info":{"display_name":"swright","author_link":"https:\/\/extension.umaine.edu\/highmoor\/author\/swright\/"},"comment_info":"","category_info":[{"term_id":182,"name":"Tree Fruit Newsletter","slug":"tree-fruit-newsletter","term_group":0,"term_taxonomy_id":182,"taxonomy":"category","description":"","parent":0,"count":30,"filter":"raw","cat_ID":182,"category_count":30,"category_description":"","cat_name":"Tree Fruit Newsletter","category_nicename":"tree-fruit-newsletter","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/posts\/12675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/users\/201"}],"replies":[{"embeddable":true,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/comments?post=12675"}],"version-history":[{"count":1,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/posts\/12675\/revisions"}],"predecessor-version":[{"id":12676,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/posts\/12675\/revisions\/12676"}],"wp:attachment":[{"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/media?parent=12675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/categories?post=12675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/extension.umaine.edu\/highmoor\/wp-json\/wp\/v2\/tags?post=12675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}