{"id":4131,"date":"2011-04-20T11:31:32","date_gmt":"2011-04-20T15:31:32","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/?page_id=4131"},"modified":"2024-02-07T11:10:46","modified_gmt":"2024-02-07T16:10:46","slug":"canada-bluegrass","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/blueberries\/weed-images\/grasses-sedges-rushes\/canada-bluegrass\/","title":{"rendered":"Canada bluegrass"},"content":{"rendered":"<p><em>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469.\u00a0 Updated February 2018.<\/em><\/p>\n<p><strong>Scientific name: <\/strong><em>Poa compressa <\/em>L. <em><br \/>\n<\/em><\/p>\n<p><strong>Common name(s): <\/strong>Canada bluegrass, flattened meadowgrass, flat-stem bluegrass, flat-stemmed bluegrass<\/p>\n<p><strong>Link(s): <\/strong><a href=\"https:\/\/plants.usda.gov\/home\/plantProfile?symbol=POCO\" target=\"_blank\" rel=\"noopener noreferrer\">USDA PLANTS Profile<\/a>, <a href=\"https:\/\/gobotany.nativeplanttrust.org\/species\/poa\/compressa\/\" 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-4131 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\/2013\/04\/Poa-compressa-1.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-1-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-1-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/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\/04\/Poa-compressa-1c.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-1c-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa flattened stem\" aria-describedby=\"gallery-1-4133\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-1c-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-1c-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-1-4133'>\n\t\t\t\tstem is flattened below inflorescence\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\/04\/Poa-compressa-2c.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-2c-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa June\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-2c-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2011\/04\/Poa-compressa-2c-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/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\/2013\/04\/Poa-compressa-002.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-002-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa late August\" aria-describedby=\"gallery-1-8167\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-002-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-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-1-8167'>\n\t\t\t\tlate August\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\/2013\/04\/Poa-compressa-003.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-003-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-003-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-003-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/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\/Poa-compressa-005.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-005-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Poa compressa inflorescence\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-005-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/04\/Poa-compressa-005-32x32.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>&#8211; perennial<\/p>\n<p>-Grass Family (Poaceae)<\/p>\n<p>&#8211; Culms are 15-20 cm tall<\/p>\n<p>-Sheaths are open,smooth, and flattened<\/p>\n<p>-Leaves are 1-4 mm\u00a0 wide and 2-10 cm long<\/p>\n<p>-inflorescence is a narrow panicle 3-8 cm long<\/p>\n<p>&#8211; very similar to <em>P. pratensis<\/em> (KY bluegrass), but stem is flattened below inflorescence. See Go Botany webpage for <a href=\"https:\/\/gobotany.nativeplanttrust.org\/species\/poa\/pratensis\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>P. pratensis<\/em><\/a><\/p>\n<p><strong>Habitat:<\/strong><\/p>\n<p>-acidic low fertility soils<\/p>\n<p>-disturbed sites<\/p>\n<p>-roadsides<\/p>\n<p><strong>Agriculture:<\/strong><\/p>\n<p>-palatable to livestock<\/p>\n<p>-does not produce lots of forage<\/p>\n<p>-small mammals and birds eat the leaves and seeds<\/p>\n<p>-Grasshoppers, plant bugs, stink bugs, skipper caterpillars, moth caterpillars, beetles, and bluegrass bill bugs feed on Canada bluegrass<\/p>\n<p>-documented disease found in Canada bluegrass is oat necrotic mottle virus and a mild or symptom less disease in Canada bluegrass which might be transmitted by a mite<\/p>\n<p><strong>Natural History:<\/strong><\/p>\n<p>-native to Europe<\/p>\n<p>-introduced in Canada in the 1700s<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Acknowledgement(s):<\/strong><\/p>\n<p>St. John, L., D. Tilley, and S. Winslow. 2012. Plant guide for Canada bluegrass (Poa compressa) USDA-Natural Resources Conservation Service, Plant Materials Center, Aberdeen, Idaho 83210.<\/p>\n<p>Eric T. Doucette, Ph.D. &#8211; Assistant Professor of Biology, MA College of Liberal Arts, North Adams, MA (<em>updated Feb 2018<\/em>)<strong><br \/>\n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469.\u00a0 Updated February 2018. Scientific name: Poa compressa L. Common name(s): Canada bluegrass, flattened meadowgrass, flat-stem bluegrass, flat-stemmed bluegrass Link(s): USDA PLANTS Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and choose &#8220;view image&#8221;) Description: &#8211; perennial [&hellip;]<\/p>\n","protected":false},"author":218,"featured_media":0,"parent":3413,"menu_order":6,"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-4131","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>Canada bluegrass - 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\/grasses-sedges-rushes\/canada-bluegrass\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Canada bluegrass - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Prepared by Jennifer L. 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