{"id":14543,"date":"2026-04-16T08:58:30","date_gmt":"2026-04-16T15:58:30","guid":{"rendered":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=14543"},"modified":"2026-04-16T08:59:50","modified_gmt":"2026-04-16T15:59:50","slug":"podosphaera-pannosa-wallroth-de-bary-rose-powdery-mildew","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=14543","title":{"rendered":"Podosphaera pannosa (Wallroth) de Bary Rose powdery mildew"},"content":{"rendered":"<h2 class=\"wp-block-heading has-text-align-center\" style=\"text-align: center;\">California Pest Rating Proposal for<\/h2>\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"text-align: center;\"><em>Podosphaera pannosa <\/em>(Wallroth) de Bary<br \/>\nRose powdery mildew<br \/>\nCurrent Pest Rating: Z<br \/>\nProposed Pest Rating: C<\/h4>\n<hr \/>\n<p style=\"text-align: center;\"><strong>Comment Period:\u00a0<span style=\"color: #ff0000;\">04\/16\/2026 through 05\/31\/2026<\/span><\/strong><\/p>\n<hr \/>\n<p style=\"text-align: center;\"><a href=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2026\/04\/Podosphaera-pannosa_ADA_PRP_-with-citations.pdf\">Download Pest Rating Proposal<\/a><\/p>\n<hr \/>\n<p><span style=\"color: #ff0000;\"><strong>*NOTE<\/strong><\/span><\/p>\n<p>You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov.<\/p>\n<p><em>Posted by SK<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>California Pest Rating Proposal for Podosphaera pannosa (Wallroth) de Bary Rose powdery mildew Current Pest Rating: Z Proposed Pest Rating: C Comment Period:\u00a004\/16\/2026 through 05\/31\/2026 Download Pest Rating Proposal *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us &hellip; <a href=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=14543\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Podosphaera pannosa (Wallroth) de Bary Rose powdery mildew<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1118,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[671,8,4],"tags":[],"class_list":["post-14543","post","type-post","status-publish","format-standard","hentry","category-c-rated","category-fungi","category-plant-pathology"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-3Mz","jetpack-related-posts":[{"id":2468,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2468","url_meta":{"origin":14543,"position":0},"title":"Podosphaera xanthii (Castagne) U. Braun &#038; Shishkoff 2000","author":"Admin","date":"August 17, 2016","format":false,"excerpt":"California Pest Rating for Podosphaera xanthii (Castagne) U. Braun & Shishkoff 2000 Pest Rating: \u00a0C PEST RATING PROFILE Initiating Event: On July 13, 216, diseased leaves of Calibrachoa sp. plants exhibiting powdery mildew symptoms were collected during a regulatory nursery inspection, from a nursery in San Luis Obispo County, by\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"Watermelon leaf showing an even distribution of powdery mildew (Podosphaera xanthii) over the entire leaf surface. June 1995 Photo by Gerald Holmes, California Polytechnic State University at San Luis Obispo, Bugwood.org","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/08\/1571367-Podosphaera-xanthii-GeraldHolmes-CA-PolytechStateUniv-SanLuisObispo-Bugwood-202x300.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1008,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1008","url_meta":{"origin":14543,"position":1},"title":"Podosphaera caricae-papayae","author":"Admin","date":"June 1, 2015","format":false,"excerpt":"California Pest Rating for Podosphaera caricae-papayae Pest Rating: B PEST RATING PROFILE Initiating Event:\u00a0 In March 2014, Podosphaera caricae-papayae, a powdery mildew fungal pathogen, was identified by morphological and sequence analyses by Suzanne Latham, plant pathologist, CDFA. The symptomatic papaya leaf sample was collected from an ornamental container nursery in\u2026","rel":"","context":"In &quot;Fungi&quot;","block_context":{"text":"Fungi","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=8"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1969,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1969","url_meta":{"origin":14543,"position":2},"title":"Plant Pathogens","author":"Admin","date":"May 13, 2016","format":false,"excerpt":"Plant diseases can be caused by several pathogenic microorganisms including fungi, bacteria, viruses, viroids, phytoplasmas and plant parasitic nematodes. In California, several plant pathogens have evolved with native plants and consequently, caused little damage. However, many other pathogens are either not present or have only been newly discovered within the\u2026","rel":"","context":"In &quot;Ratings&quot;","block_context":{"text":"Ratings","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=333"},"img":{"alt_text":"Plant pathogens montage","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/plant-diseases-featured-image.jpg?fit=1038%2C588&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/plant-diseases-featured-image.jpg?fit=1038%2C588&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/plant-diseases-featured-image.jpg?fit=1038%2C588&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/plant-diseases-featured-image.jpg?fit=1038%2C588&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":12572,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=12572","url_meta":{"origin":14543,"position":3},"title":"Colletotrichum coccodes (Wallroth) S.J. Hughes 1958 Black dot of potato Tomato anthracnose","author":"Heather.Martin","date":"April 4, 2024","format":false,"excerpt":"California Pest Rating for Colletotrichum coccodes (Wallroth) S.J. Hughes 1958 Black dot of potato Tomato anthracnosePest Rating: C download pest rating *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. Posted\u2026","rel":"","context":"In &quot;C-Rated&quot;","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7560,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=7560","url_meta":{"origin":14543,"position":4},"title":"Sawadaea bicornis (Wallr. : Fr.) Miyabe 1937 Powdery mildew of maple","author":"Heather.Martin","date":"September 18, 2020","format":false,"excerpt":"California Pest Rating for Sawadaea bicornis (Wallr.: Fr.) Miyabe 1937 Powdery mildew of maplePest Rating: C download pest rating *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. Posted by ka","rel":"","context":"In &quot;C-Rated&quot;","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9133,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=9133","url_meta":{"origin":14543,"position":5},"title":"Erysiphe quercicola S. Takam. &#038; U. Braun 2007 Powdery mildew","author":"Heather.Martin","date":"November 5, 2021","format":false,"excerpt":"California Pest Rating for Erysiphe quercicola S. Takam. & U. Braun 2007 Powdery mildewPest Rating: C DOWNLOAD PEST RATING *NOTE You must be registered and logged in to post a comment. If you have registered and have not received the registration confirmation, please contact us at permits[@]cdfa.ca.gov. Posted by ta","rel":"","context":"In &quot;C-Rated&quot;","block_context":{"text":"C-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=671"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/14543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/users\/1118"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14543"}],"version-history":[{"count":1,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/14543\/revisions"}],"predecessor-version":[{"id":14544,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/14543\/revisions\/14544"}],"wp:attachment":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}