{"id":13607,"date":"2018-08-03T14:11:30","date_gmt":"2018-08-03T14:11:30","guid":{"rendered":"http:\/\/www.uwb.edu\/?p=13607"},"modified":"2026-03-19T21:38:53","modified_gmt":"2026-03-19T21:38:53","slug":"oxalis-oregana","status":"publish","type":"page","link":"https:\/\/www.uwb.edu\/wetland\/plants\/oxalis-oregana","title":{"rendered":"Redwood Sorrel"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><em>Oxalis oregana<\/em> &#8211; Redwood sorrel<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">At a Glance:<\/h3>\n\n\n\n<figure class=\"wp-block-image alignright size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"399\" height=\"608\" src=\"https:\/\/www.uwb.edu\/wetland\/wp-content\/uploads\/sites\/21\/2023\/06\/oxalis-oregana-by-sarah-verlinde.jpg\" alt=\"patch of redwood sorrel (4 leaf clover)\" class=\"wp-image-15878\" srcset=\"https:\/\/www.uwb.edu\/wetland\/wp-content\/uploads\/sites\/21\/2023\/06\/oxalis-oregana-by-sarah-verlinde.jpg 399w, https:\/\/www.uwb.edu\/wetland\/wp-content\/uploads\/sites\/21\/2023\/06\/oxalis-oregana-by-sarah-verlinde-197x300.jpg 197w\" sizes=\"auto, (max-width: 399px) 100vw, 399px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Family:  Oxalidaceae<\/li>\n\n\n\n<li>Plant Type:  low-growing herbaceous ground cover<\/li>\n\n\n\n<li>Distribution:  Pacific Coast, California to British Columbia<\/li>\n\n\n\n<li>Habitat:  Moist woods, shade<\/li>\n\n\n\n<li>Height:   8 inches <\/li>\n\n\n\n<li>Flower\/Fruits:   delicate white\/pink 5-petaled flowers<\/li>\n\n\n\n<li>Flowering Season: April &#8211; September<\/li>\n\n\n\n<li>Leaves: clover-shaped, 3-part lobed leaf with a cordate\/heart shape.<\/li>\n\n\n\n<li>Generation: Perennial<\/li>\n\n\n\n<li>Notable feature: This plant is very sensitive to sunlight (blue light) and rain. Once exposed to sunflecks or movement, the leaves will fold back to prevent damage. After the initial disturbance, the leaves will take ten seconds to respond, and six minutes to completely close down. After the disturbance is over, it takes about ten minutes to return to normal.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Commerce and Landscaping<\/h3>\n\n\n\n<p>Even though Oxalis is not related to the pea family (Fabaceae) which has clovers in it, Oxalis is grown commercially and sold as clover plants to celebrate St. Patrick\u2019s Day. The clover leaf is considered by many to be a symbol of good luck. Planted in shady areas, redwood sorrel can spread vigorously making an attractive ground cover. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ethnobotany and Plant Uses<\/h3>\n\n\n\n<p>The genus name Oxalis refers to the compound oxalic acid, a tangy, mildly toxic compound in the leaves. The leaves could be eaten in small amounts raw or cooked.  Northwest tribes ate the redwood sorrel with dried fish. The plant was also made into a body wash to treat areas of inflammation like arthritis or sore muscles.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">References and Resources<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"http:\/\/biology.burke.washington.edu\/herbarium\/imagecollection\/taxon.php?Taxon=Oxalis%20oregana\">WTU Image Herbarium: Oxalis oregana<\/a><\/li>\n<\/ul>\n\n\n\n<p><em>This article was written by Sarah Verlinde. For questions regarding the UWB\/CC Plant Tour, contact Sarah at <a href=\"http:\/\/severlin@uw.edu\" target=\"_blank\" rel=\"noopener\">severlin@uw.edu<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oxalis oregana &#8211; Redwood sorrel At a Glance: Commerce and Landscaping Even though Oxalis is not related to the pea family (Fabaceae) which has clovers in it, Oxalis is grown commercially and sold as clover plants to celebrate St. Patrick\u2019s Day. The clover leaf is considered by many to be a symbol of good luck&#8230;.<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":13590,"menu_order":35,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"_is_archived":false,"_archived_contact_email":"","footnotes":""},"class_list":["post-13607","page","type-page","status-publish","hentry"],"acf":{"related_links":{"toggle_visibility":false,"link_1":"","link_2":"","link_3":"","link_4":"","link_5":""},"highlight_box":{"toggle_visibility":false,"title":"","content":"","button":"","button_style":"angled-purple-button","button_screen_reader_text":""},"contact_type_1":{"toggle_visibility":true,"contact_title":"Tyson Kemper","email":"wildhair@uw.edu","phone":"","box":"","address_line_1":"","address_line_2":"","location":""},"contact_type_2":{"toggle_visibility":false,"contact_title":"","email":"","phone":"","box":"","address_line_1":"","address_line_2":"","location":""},"social_media":{"toggle_visibility":false,"facebook_url":"","instagram_url":"","linkedin_url":"","twitter_url":"","youtube_url":""},"blog_archive_sidebar_visibility":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Redwood Sorrel - North Creek Wetland<\/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.uwb.edu\/wetland\/plants\/oxalis-oregana\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Redwood Sorrel - North Creek Wetland\" \/>\n<meta property=\"og:description\" content=\"Oxalis oregana &#8211; Redwood sorrel At a Glance: Commerce and Landscaping Even though Oxalis is not related to the pea family (Fabaceae) which has clovers in it, Oxalis is grown commercially and sold as clover plants to celebrate St. Patrick\u2019s Day. 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