{"id":11288,"date":"2026-05-26T23:23:26","date_gmt":"2026-05-26T23:23:26","guid":{"rendered":"https:\/\/8657085.xyz\/?p=11288"},"modified":"2026-05-26T23:23:26","modified_gmt":"2026-05-26T23:23:26","slug":"pest-with-no-cure-sparks-panic-at-napa-vineyards-as-urgent-alert-issued","status":"publish","type":"post","link":"https:\/\/8657085.xyz\/?p=11288","title":{"rendered":"Pest with \u2018no cure\u2019 sparks panic at Napa vineyards as urgent alert issued"},"content":{"rendered":"<p> <div style=\"display: grid; grid-template-columns: 300px 160px; gap: 2px; width: 460px; background: #eee; padding: 2px;\">\r\n\r\n  <!-- \u6574\u884c\u5bbd\u5e7f\u544a -->\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876674\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"grid-column: 1\/-1; width: 460px; height: 90px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876676\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n\r\n  <!-- \u5de6\u4fa7\u7ad6\u6392 -->\r\n  <div style=\"height: 250px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async type=\"application\/javascript\" src=\"https:\/\/a.magsrv.com\/ad-provider.js\"><\/script> \r\n <ins class=\"eas6a97888e2\" data-zoneid=\"5876672\"><\/ins> \r\n <script>(AdProvider = window.AdProvider || []).push({\"serve\": {}});<\/script>\r\n  <\/div>\r\n  <div style=\"height: 500px; background: #ccc; display: grid; place-items: center;\">\r\n  <script async 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{}});<\/script>\r\n<\/div><br \/>\n<\/p>\n<div>\n<p>An urgent warning issued Tuesday by Napa County\u2019s agricultural commissioner has sparked concern across California after an invasive insect linked to devastating vineyard disease was discovered in grapevines sold at Costco Wholesale and distributed across multiple counties.<\/p>\n<p>Officials confirmed that shipments of grapevines originating from Burchell Nursery in Fresno County were delivered to Costco locations serving Napa, Sonoma, Marin, Solan\u00a0and Yolo counties.<\/p>\n<p>The affected stock, 220 grapevines in total, was shipped between April 21 and May 26 and included plants sold at Costco Wholesale in Napa.<\/p>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Grapevine leaves showing browning and yellowing from Pierce\u2019s disease. <span class=\"credit\">San Francisco Chronicle via Getty Images<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Glassy-winged sharpshooter eggs laid on a leaf, with small circular holes indicating parasitization. <span class=\"credit\">California Department of Food and Agriculture<\/span><\/figcaption><\/figure>\n<p>The concern centers on the glassy-winged sharpshooter (GWSS), an insect resembling a cricket that poses a major threat to California\u2019s agricultural industry.<\/p>\n<aside class=\"single__inline-module aligncenter wp-block-nypost-editor-primary-tag\">\n<\/aside>\n<p>Though harmless to humans and pets, the pest is highly destructive to plants because it spreads Pierce\u2019s disease, a bacterial infection that blocks water-conducting systems and ultimately dries out vines.<\/p>\n<p>The disease has no cure.<\/p>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Close-up of a glassy-winged sharpshooter insect. <span class=\"credit\">jwjarrett \u2013 stock.adobe.com<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Two glassy-winged sharpshooters in a glass tube. <span class=\"credit\">Los Angeles Times via Getty Images<\/span><\/figcaption><\/figure>\n<p>Inspectors have already removed and destroyed part of the shipment after detecting GWSS, according to Napa County agriculture commissioner Tracy Cleveland.<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\"><strong>Download The California Post App, follow us on social, and subscribe to our newsletters <\/strong><\/h2>\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p><strong>California Post News<\/strong>: Facebook, Instagram, TikTok, X, YouTube, WhatsApp, LinkedIn<br \/><strong>California Post Sports<\/strong> Facebook, Instagram, TikTok, YouTube, X<br \/><strong>California Post  <\/strong>Opinion <br \/><strong>California Post Newsletters<\/strong>: Sign up here!<br \/><strong>California Post App<\/strong>: Download here!<br \/><strong>Home delivery<\/strong>: Sign up here!<br \/><strong>Page Six Hollywood<\/strong>: Sign up here!<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<\/div>\n<p>\u201c63 of the 220 grapevines delivered to Napa Costco have been destroyed and one GWSS egg mass was found.\u201d The remaining 157 grapevines \u201cmay be in the possession of community members who purchased them at Napa Costco,\u201d the statement added.<\/p>\n<p>Costco is now directly contacting affected members and is cooperating with county agriculture officials.<\/p>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>The affected stock was shipped between April 21 and May 26 and included plants sold at Costco Wholesale in Napa. <span class=\"credit\">Bloomberg via Getty Images<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Inspectors have already removed and destroyed part of the shipment. <span class=\"credit\">Facebook\/@bremerfamilywinery<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>A bunch of shriveled, dark grapes next to a bunch of healthy green grapes, illustrating Pierce\u2019s Disease. <span class=\"credit\">AP<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Two green grape leaves show brown and reddish discoloration characteristic of Pierce\u2019s disease. <span class=\"credit\">San Francisco Chronicle via Getty Images<\/span><\/figcaption><\/figure>\n<p>\u201cGWSS is a devastating pest for our local vineyards, and it is critical for us to track down any potentially affected plants purchased at Costco or brought into Napa County,\u201d Cleveland said. \u201cI am confident that the community will pull together to help us limit the risk to our local agriculture. Vigilance and prompt reporting are essential\u201d.<\/p>\n<p>Officials noted that in May, grapevines are typically in bloom with small fruit forming, but infection can stunt growth. <\/p>\n<div class=\"single__inline-module inline-module inline-module--newsletter aligncenter inline-module--nypostbusinessunit aligncenter wp-block-nypost-editor-newsletter\" data-source-unit=\"Inline Newsletter Module Cali - Morning Report\">\n<div class=\"inline-module__inner\">\n<div class=\"inline-module__title-wrapper\">\n<div class=\"inline-module__unsubmitted-title-wrapper\">\n<h3 class=\"inline-module__title headline headline--combo-sm-md\">\n\t\t\t\t\t\t\tSign up for the California Morning Report newsletter\t\t\t\t\t\t<\/h3>\n<p class=\"inline-module__cta\">\n\t\t\t\t\t\t\tCalifornia&#8217;s top news, sports and entertainment delivered to your inbox every day.\t\t\t\t\t\t<\/p>\n<\/p><\/div>\n<p><h3 class=\"inline-module__title headline headline--combo-sm-md\">\n\t\t\t\t\t\tThanks for signing up!\t\t\t\t\t<\/h3>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n<p>Visible \u201cscorched\u201d leaves, however, often do not appear until late summer, making early detection difficult.<\/p>\n<p>Authorities warned of the potential long-term consequences if the insect becomes established.<\/p>\n<p>\u201cThey would be difficult and costly to eradicate, and the increased losses from Pierce\u2019s disease could devastate the local vineyard, winery and tourism industries,\u201d reads a page dedicated to the pest on the county\u2019s website.<\/p>\n<p>Historical data underscores the threat.<\/p>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>The glassy-winged sharpshooter was first detected in California in 1994. <span class=\"credit\">Getty Images<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>An outbreak was prevented in Sacramento County in 2019 after serious quarantine measures. <span class=\"credit\">ArenaCreative \u2013 stock.adobe.com<\/span><\/figcaption><\/figure>\n<figure class=\"nyp-slideshow-modal-image wp-block-image aligncenter size-large\"><figcaption>Authorities warned of the potential long-term consequences if the insect becomes established. <span class=\"credit\">Brett \u2013 stock.adobe.com<\/span><\/figcaption><\/figure>\n<p>A 2008 University of California study found that between 1994 and 2000, Pierce\u2019s disease caused nearly $30 million in losses and destroyed more than 1,000 acres of grapevines in Northern California.<\/p>\n<p>In 2019 an outbreak was prevented in Sacramento County after serious quarantine measures, according to reporting from The Sacramento Bee.<\/p>\n<p>The glassy-winged sharpshooter was first detected in California in 1994.<\/p>\n<\/p><\/div>\n<p><script async defer src=\"https:\/\/platform.instagram.com\/en_US\/embeds.js\"><\/script><br \/>\n<br \/><!-- \u603b\u5bb9\u5668\uff1a\u6700\u5927\u5bbd908px Grid\u7d27\u51d1\u5e03\u5c40 -->\r\n<div style=\"display: grid; 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