{"id":2693,"date":"2011-04-19T11:57:14","date_gmt":"2011-04-19T15:57:14","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/"},"modified":"2025-02-11T04:49:22","modified_gmt":"2025-02-11T09:49:22","slug":"sweet-fern","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/blueberries\/weed-images\/woody-weeds\/sweet-fern\/","title":{"rendered":"Sweet fern"},"content":{"rendered":"<p><em>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011.<\/em><\/p>\n<p><strong>Scientific name:<\/strong> <em>Comptonia peregrina<\/em> (L.) J.M. Coult.; also <em>Myrica aspleniifolia <\/em>L.<em><br \/>\n<\/em><\/p>\n<p><strong>Common name(s): <\/strong>sweet fern, sweet-fern<\/p>\n<p><strong>Links:<\/strong> <a href=\"https:\/\/plants.usda.gov\/home\/plantProfile?symbol=COPE80\" target=\"_blank\" rel=\"noopener noreferrer\">USDA PLANTS Profile<\/a>, <a href=\"http:\/\/www.wildflower.org\/plants\/result.php?id_plant=COPE80\" target=\"_blank\" rel=\"noopener noreferrer\">NPIN Profile<\/a>, <a href=\"https:\/\/gobotany.nativeplanttrust.org\/species\/comptonia\/peregrina\/\" target=\"_blank\" rel=\"noopener noreferrer\">Go Botany<\/a><\/p>\n<p><em><strong>Images:<\/strong> (to see enlargements [PC]: click on image, then right click and choose &#8220;view image&#8221;)<\/em><\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 25%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-2693 gallery-columns-4 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-7-opt.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-7-opt-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina early May\" aria-describedby=\"gallery-1-14420\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-7-opt-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-7-opt-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-14420'>\n\t\t\t\tearly May\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-8-opt.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-8-opt-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina male flowers and last year&#039;s foliage\" aria-describedby=\"gallery-1-14417\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-8-opt-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-8-opt-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-14417'>\n\t\t\t\tmale flowers and last year&#8217;s foliage\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-5-opt.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-5-opt-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina male flowers\" aria-describedby=\"gallery-1-14419\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-5-opt-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-5-opt-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-14419'>\n\t\t\t\tmale flowers\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-1-opt.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-1-opt-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina new growth with male flowers\" aria-describedby=\"gallery-1-14418\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-1-opt-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-1-opt-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-14418'>\n\t\t\t\tlate May; new growth w\/male flowers at ends of branches &amp; female flowers just below\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-3c-opt.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-3c-opt-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina mature bush\" aria-describedby=\"gallery-1-14416\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-3c-opt-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2019\/01\/Comptonia-peregrina-3c-opt-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-14416'>\n\t\t\t\tmature sweet fern\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-002.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-002-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina early June\" aria-describedby=\"gallery-1-7982\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-002-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-002-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7982'>\n\t\t\t\tearly June\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-11.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-11-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina male and female flowers\" aria-describedby=\"gallery-1-7983\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-11-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Comptonia-peregrina-11-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-7983'>\n\t\t\t\tearly June, female and male flowers\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-2c.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-2c-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina leaves and seedpods\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-2c-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-2c-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-4c.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-4c-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina seedpod in mid-June\" aria-describedby=\"gallery-1-2694\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-4c-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-4c-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2694'>\n\t\t\t\tseedpod detail, mid-June\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-1c.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-1c-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Comptonia peregrina bush\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-1c-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/02\/Comptonia-peregrina-1c-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p><strong>Description:<\/strong><\/p>\n<p>-Myricaceae family<\/p>\n<p>&#8211; perennial shrub<\/p>\n<p>-Woody shrub up to 3\u2032 tall<\/p>\n<p>-erect or spreading branches<\/p>\n<p>Leaves and stems covered with hairs<\/p>\n<ul>\n<li>Leaves are alternate<\/li>\n<li>linear 3\u2033-6\u2033 long<\/li>\n<li>deeply lobed<\/li>\n<\/ul>\n<p>-Leaves and stems fragrant when crushed<\/p>\n<p>&#8211; flowers April-May.<\/p>\n<p>-flower produces brown catkins in April before leaves begin to develop in May<\/p>\n<p><strong>Habitat:<\/strong><\/p>\n<p>-acidic<\/p>\n<p>-rocky soils<\/p>\n<p>-partial-full sun<\/p>\n<p><strong>Management:<\/strong><\/p>\n<p>-mulching can be effective in blueberry fields for preventive methods<\/p>\n<p>-weed whacking or clipping at least three times a season to eliminate sun competition<\/p>\n<p>-USDA recommends the following chemicals for effective suppression<\/p>\n<ul>\n<li>Picloram<\/li>\n<li>Diacamba<\/li>\n<li>-2,4-D<\/li>\n<\/ul>\n<p><strong>Natural History:<\/strong><\/p>\n<p>-used by Native Americans as a astringent and to treat fever, toothaches, rashes<\/p>\n<p>&nbsp;<\/p>\n<p>Sources:<\/p>\n<p>medical herbs. \u201cMedicinal HerbsSweet FernComptonia Peregrina.\u201d <i>Medicinal Herbs: SWEET FERN &#8211; Comptonia Peregrina<\/i>, Plants for a Future, www.naturalmedicinalherbs.net\/herbs\/c\/comptonia-peregrina=sweet-fern.php.<\/p>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011. Scientific name: Comptonia peregrina (L.) J.M. Coult.; also Myrica aspleniifolia L. Common name(s): sweet fern, sweet-fern Links: USDA PLANTS Profile, NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and choose &#8220;view image&#8221;) Description: [&hellip;]<\/p>\n","protected":false},"author":70,"featured_media":0,"parent":3409,"menu_order":29,"comment_status":"closed","ping_status":"closed","template":"templates\/page-withsidebar.php","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":""},"class_list":["post-2693","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sweet fern - Cooperative Extension: Maine Wild Blueberries - 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\/blueberries\/weed-images\/woody-weeds\/sweet-fern\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sweet fern - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011. Scientific name: Comptonia peregrina (L.) J.M. Coult.; also Myrica aspleniifolia L. 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D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011. Scientific name: Comptonia peregrina (L.) J.M. Coult.; also Myrica aspleniifolia L. 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