{"id":61765,"date":"2026-03-23T05:10:27","date_gmt":"2026-03-22T20:10:27","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=61765"},"modified":"2026-03-23T05:10:27","modified_gmt":"2026-03-22T20:10:27","slug":"what-on-earth-is-it-called-dogs-balls-the-tiny-blue-flower-veronica-persica-and-its-shocking-survival-strategy-viewer-discretion-advised","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=61765&lang=en","title":{"rendered":"What on Earth Is It Called \u201cDog\u2019s Balls\u201d!? The Tiny Blue Flower Veronica persica and Its Shocking Survival Strategy [Viewer Discretion Advised!?]"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/span><\/p>\n<p style=\"text-align: center;\">\u3010<a href=\"https:\/\/music.youtube.com\/watch?v=YmZXRXG1ilA&amp;si=BHhKkSSRi2B5YNJe\">This article is also available on Radio!<\/a>\u3011<\/p>\n<p>Tiny blue flowers scattered at your feet, looking just like a handful of sapphires. Have you ever noticed these charming little blossoms while taking a spring stroll? Today, I\u2019d like to introduce you to the Persian Speedwell (Ooinunofuguri), the very first messenger of spring. While it\u2019s often dismissed as just another common weed, this tiny plant actually packs some incredible &#8220;high-tech strategies&#8221; to survive the harsh realities of nature.<\/p>\n<p>The Name Gap and Heart-Shaped Fruits<br \/>\nFirst, let\u2019s talk about its name, which has a bit of a shocking origin\u2014one you\u2019d never guess from its delicate appearance.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-61744 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.38.19.jpeg\" alt=\"\" width=\"466\" height=\"411\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.38.19.jpeg 896w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.38.19-300x265.jpeg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.38.19-768x677.jpeg 768w\" sizes=\"auto, (max-width: 466px) 100vw, 466px\" \/><\/p>\n<p>In Japanese, the name Ooinunofuguri translates literally to&#8230; &#8220;Great Dog\u2019s Scrotum.&#8221; Yes, you read that right! It was named by Dr. Tomitaro Makino, the &#8220;Father of Japanese Botany&#8221; (and the inspiration for a popular Japanese TV drama).<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"ZD3S18GNZb\"><p><a href=\"https:\/\/phys-edu.net\/wp\/?p=45325\">\u7267\u91ce\u5bcc\u592a\u90ce\u5148\u751f\u306e\u30b9\u30b1\u30c3\u30c1\u306b\u3073\u3063\u304f\u308a\uff01\u9ad8\u77e5\u770c\u7acb\u7267\u91ce\u690d\u7269\u5712<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;\u7267\u91ce\u5bcc\u592a\u90ce\u5148\u751f\u306e\u30b9\u30b1\u30c3\u30c1\u306b\u3073\u3063\u304f\u308a\uff01\u9ad8\u77e5\u770c\u7acb\u7267\u91ce\u690d\u7269\u5712&#8221; &#8212; \u79d1\u5b66\u306e\u30cd\u30bf\u5e33\" src=\"https:\/\/phys-edu.net\/wp\/?p=45325&#038;embed=true#?secret=IQVIQ6uqGO#?secret=ZD3S18GNZb\" data-secret=\"ZD3S18GNZb\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>He named it after a native Japanese species called Inunofuguri because their fruit shapes are similar, but this one has larger flowers.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-61743 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.40.52.jpeg\" alt=\"\" width=\"266\" height=\"212\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.40.52.jpeg 744w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.40.52-300x239.jpeg 300w\" sizes=\"auto, (max-width: 266px) 100vw, 266px\" \/><\/p>\n<p style=\"text-align: center;\">Image via Kujo-yama Kyoto Nature Observation Diary: https:\/\/net1010.net\/2008\/03\/id_1630\/<\/p>\n<p>If you look at the photo, you can certainly see two plump, heart-shaped fruits sitting side-by-side. On a more romantic note, its beautiful blue color has earned it the nickname &#8220;Star\u2019s Eyes.&#8221; This huge gap between its names is part of its charm! By the way, this plant is actually an introduced species in Japan.<\/p>\n<p>Winter Survival: Natural Insulation<br \/>\nThe Persian Speedwell is a &#8220;winter annual,&#8221; meaning it grows close to the ground during the winter while other plants are withered away. It stays perfectly unfazed by the freezing cold thanks to two clever secrets.<\/p>\n<p>The first is its &#8220;Natural Antifreeze.&#8221; By intentionally increasing the concentration of sugar within its cells, the plant prevents itself from freezing even when temperatures drop below zero. It\u2019s the same principle as why thick sugar water is harder to freeze in a science experiment.<\/p>\n<p>The second is the &#8220;Down Jacket Effect.&#8221; If you look closely at the stems and leaves, they are covered in tiny hairs. These create a layer of trapped air, acting as insulation that prevents frost and snow from making direct contact with the plant\u2019s surface.<\/p>\n<p>A Two-Step Pollination Strategy: Failure is Not an Option<br \/>\nFor flowers blooming in early spring, the biggest challenge is the lack of insects. No matter how pretty the flower is, it can\u2019t produce seeds if there are no bees or butterflies to carry the pollen. To solve this, the Persian Speedwell has a perfect backup plan.<\/p>\n<p>First, it uses nectar in its center to lure insects, aiming for cross-pollination (breeding with other flowers). However, if no insects show up, the two stamens curl inward as the flower wilts, touching their own pistil.<\/p>\n<p>This is called &#8220;Automatic Self-Pollination.&#8221; Its risk management is top-tier: &#8220;Ideally, I\u2019d like some genetic diversity through cross-pollination, but at the very least, I\u2019m making seeds by myself!&#8221; As a result, a single plant can produce an amazing average of 545 seeds. (Reference: Wikipedia)<\/p>\n<p>The &#8220;Contrarian Strategy&#8221;: Winning by Starting Early<br \/>\nWhy do they bother blooming while it\u2019s still so cold? It\u2019s all about &#8220;Avoiding Competition.&#8221;<\/p>\n<p>Once summer hits and tall grasses take over, the sun can no longer reach the Persian Speedwell, which lives low to the ground. That\u2019s why it grows rapidly in early spring when its rivals are still asleep, allowing it to monopolize the sunlight.<\/p>\n<p>Its &#8220;One-Day Flower&#8221; cycle\u2014opening in the morning sun and dropping off by evening\u2014is another piece of wisdom to avoid wasting limited energy. The next time you spot these blue flowers by the roadside, try kneeling down for a closer look. You&#8217;ll find a story of resilient life, hiding a universe of strategies within a tiny body.<\/p>\n<p>Contact &amp; Inquiries<br \/>\nMaking the wonders of science more accessible! I share fun experiments you can do at home and easy-to-understand tips. Feel free to explore more!<\/p>\n<p>My &#8220;Science Notebook&#8221; content is now a book! Details <a href=\"https:\/\/amzn.to\/42PMCEL\">here<\/a><\/p>\n<p>Learn more about the author, Ken Kuwako, <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">here<\/a><\/p>\n<p>For work inquiries (writing, speaking, workshops, TV supervision, etc.), click <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">here<\/a><br \/>\n<span class=\"s2\">&#8211; Follow me on <a href=\"https:\/\/x.com\/kuwako\">X (Twitter)<\/a> for updates!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a> Check out experiment videos on my <a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Science Material Channel<\/a>!<\/p>\n<h3>\uff15\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p>\u30ad\u30fc\u30f3\u3068\u51b7\u3048\u308b\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\uff01\u6c17\u6e29\u304c\u4e0a\u304c\u3063\u3066\u304f\u308b\u3053\u306e\u6642\u671f\u30fb\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u3092\u4f7f\u3063\u305f\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\u306e\u5b9f\u9a13\u306f\u3044\u304b\u304c\uff1f<\/p>\r\n<p><img class=\"alignnone wp-image-39516 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe.jpg 1406w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-300x168.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-1024x572.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-768x429.jpg 768w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2022\/03\/0618612becc032a60bdda50090ccccbe-320x180.jpg 320w\" alt=\"\" width=\"453\" height=\"253\" \/><\/p>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=39513\">\u6db2\u4f53\u30bc\u30ed\uff01\u30c9\u30e9\u30a4\u30a2\u30a4\u30b9\u304c\u6d88\u3048\u308b\u307e\u3067\u306e\uff13\u6642\u9593\u3092\u79d1\u5b66\u3059\u308b\uff08\u6607\u83ef\u30fb\u51dd\u7d50\u30fb\u7b49\u901f\u5ea6\u76f4\u7dda\u904b\u52d5\uff09<\/a><\/p>\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n<li>4\u670830\u65e5\uff08\u6728\uff09\u300cTHE\u7a81\u7834\u30d5\u30a1\u30a4\u30eb\u300d\uff08\u65e5\u672c\u30c6\u30ec\u30d3\uff09\u306e<a href=\"https:\/\/phys-edu.net\/wp\/?p=62906\">\u79d1\u5b66\u76e3\u4fee\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f<\/a>\u3002<\/li>\r\n<li>5\u67088\u65e5\uff08\u91d1\uff09<a href=\"https:\/\/phys-edu.net\/wp\/?p=62629\">\u7406\u79d1\u6559\u80b2\u30cb\u30e5\u30fc\u30b9<\/a>\u3092\u62c5\u5f53\u3057\u307e\u3057\u305f\u3002<\/li>\r\n<li>6\u670814\u65e5\uff08\u65e5\uff09\u3000\u5343\u8449\u5927\u5b66\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u300c\u63a2\u7a76\u300d\u306b\u3066\u8b1b\u5e2b\u3092\u52d9\u3081\u307e\u3059<\/li>\r\n<li>6\u670826\u65e5\uff08\u91d1\uff09\u3000\u5343\u8449\u5927\u5b66\u306e\u516c\u958b\u7814\u7a76\u4f1a\uff08\u4e2d\u5b66\u7406\u79d1\u306b\u3064\u3044\u3066\u6388\u696d\u516c\u958b\u4e88\u5b9a\uff09<\/li>\r\n<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09<br \/><img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><br \/><\/strong><\/li>\r\n<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002<br \/><img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\uff08\u65e5\u672c\u8a9e\uff09<\/p>\r\n<p style=\"text-align: center;\"><a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a>\uff08\u82f1\u8a9e\uff09<\/p>\r\n<h3 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href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;m Ken Kuwako, your Science Trainer. Every day is an experiment! \u3010This article is also available on Rad [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":61744,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":""},"categories":[781],"tags":[],"class_list":["post-61765","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-en"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/03\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-03-22-5.38.19.jpeg","jetpack-related-posts":[{"id":57509,"url":"https:\/\/phys-edu.net\/wp\/?p=57509&lang=en","url_meta":{"origin":61765,"position":0},"title":"From Dining Table to Lab! 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