{"id":2937,"date":"2016-11-23T10:11:23","date_gmt":"2016-11-23T18:11:23","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2937"},"modified":"2022-04-29T15:30:03","modified_gmt":"2022-04-29T22:30:03","slug":"clematis-vitalba-old-mans-beard","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2937","title":{"rendered":"Old Man\u2019s Beard | Clematis Vitalba"},"content":{"rendered":"<h5 style=\"text-align: center;\"><strong>California Pest Rating for<\/strong><\/h5>\n<h5 style=\"text-align: center;\"><strong><em>Clematis vitalba: <\/em><\/strong><strong>Old man\u2019s beard<\/strong><\/h5>\n<h5 style=\"text-align: center;\"><strong>\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Ranunculales: Ranunculaceae<\/strong><\/h5>\n<h5 style=\"text-align: center;\"><strong>Pest Rating: A \u00a0| \u00a0Proposed\u00a0<\/strong><strong>Seed Rating: P<\/strong><\/h5>\n<hr \/>\n<h5 style=\"text-align: center;\"><strong>PEST RATING PROFILE<\/strong><\/h5>\n<h5><strong>Initiating Event:<\/strong><\/h5>\n<p>Old Man\u2019s beard (<em>Clematis vitalba<\/em>) is listed as a B rated quarantine weed in Oregon and Class C noxious weed in Washington. In 2014, this species was added as new alert weed in California (Joe DiTomaso, UC Davis) and was listed on California Invasive Species Council\u2019s watch list in December, 2015. It has been reported several times growing in Marin, Santa Cruz and San Francisco Counties recently. (Cal Flora: Distribution by County: <em>Clematis vitalba<\/em>). Due to this, a risk assessment of this known weed is critical to designate an official rating.<\/p>\n<h5><strong>History &amp; Status:<\/strong><\/h5>\n<p>Old man\u2019s beard is a broad leaved, deciduous, woody climbing vine that \u00a0lives up to 40 years (West, 1991). It grows to 65 feet long and acts as a ground cover in the absence of trees to climb. New shoots can grow 6 feet per year and older plants can grow 30 feet per year. (Kings county Noxious Weed Control Program). Old Man\u2019s Beard is native to Europe, Africa and south west Asia. It has been introduced to and naturalized in North America, Australia and New Zealand. This plant is found on disturbed lands, forest edges and wooded areas with partial sun. It is also capable of growing on hedgerows, fence lines, dunes, riverbanks and grassland. Old man\u2019s beard can easily invade riparian vegetation, waste land, tall grasses and disturbed urban areas. Since this plant grows on road sides, the seeds can be transported on vehicles from known infestations to new sites. The highest risk of introduction is through the intentional introduction of this plant as an ornamental, plants and seeds sold by nurseries, mail order and online sales (Invasive Species Compendium: CABI Database: <em>Clematis vitalba<\/em>). It is self-pollinated and can also be pollinated by wind or insects. Old man\u2019s beard produces up to 100,000 seeds per plant per year. Seeds can remain viable for up to five years in the soil (Kings county noxious weed control program).<\/p>\n<p><strong><span style=\"text-decoration: underline;\">Official Control<\/span>:\u00a0<\/strong>Old man\u2019s beard is recognized as a harmful organism in New Zealand and is listed as invasive weed in the United Kingdom and Canada. In the United States, it is recognized as invasive in Oregon, Washington and Maine (Invasive species compendium: CABI Database: <em>Clematis vitalba<\/em>). It is not yet fully established in California.<\/p>\n<p><strong><span style=\"text-decoration: underline;\">California Distribution<\/span>:\u00a0<\/strong>Old man\u2019s beard has been observed in limited areas of Marin, Santa Cruz and Santa Clara counties (Consortium of California Herbaria).<\/p>\n<p><strong><span style=\"text-decoration: underline;\">California Interceptions<\/span>:\u00a0<\/strong>Old man\u2019s beard has not been intercepted in California through regulatory pathways (Pest and Damage Report Database, CA Department of Food and Agriculture), but has been reported to CDFA from National and State Park personnel.<\/p>\n<p><strong><span style=\"text-decoration: underline;\">United States<\/span>:<\/strong>\u00a0\u00a0Old man\u2019s beard has a long history in North American Horticulture. It was first introduced into the US between 1830 and 1840 (ACS, 2003). Currently, it has a limited naturalized distribution in the states of Oregon, Maine, Washington and California (Invasive species compendium: CABI Database: <em>Clematis vitalba)<\/em>.<\/p>\n<p><strong><span style=\"text-decoration: underline;\">International<\/span>: <\/strong>Old man\u2019s beard is native to Europe and is reported as naturalized in Ireland, Poland, Sweden, Norway and other areas bordering its native range. \u00a0It is also naturalized in parts of North America, Australia and New Zealand. (Invasive species compendium: CABI Database: <em>Clematis vitalba)<\/em><\/p>\n<p>The risk Old man\u2019s beard would pose to California is evaluated below.<\/p>\n<h5><strong>Consequences of Introduction:\u00a0 <\/strong><\/h5>\n<p><strong>1) Climate\/Host Interaction: <\/strong>Old man\u2019s beard is a warm temperate species. It grows on well-drained, moderately fertile and moist soils. In gardens, it responds well to the application of lime, but it is not restricted to calcareous sites in the wild. It is generally found in areas where annual rain fall is greater than 800 mm. California coastal areas with moist soils and heavy precipitation during the winter months can be at a risk for this invasive plant to establish.\u00a0Risk is <strong><span style=\"color: #008000;\">Medium (2)<\/span>. <\/strong><\/p>\n<p style=\"padding-left: 30px;\">Evaluate if the pest would have suitable hosts and climate to establish in California.\u00a0 <strong>Score:<\/strong> <strong><span style=\"color: #008000;\">2<\/span><\/strong><\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) Not likely to establish in California; or likely to establish in very limited areas.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>&#8211; Medium (2)<\/strong> may be able to establish in a larger but limited part of California.<\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; High (3) likely to establish a widespread distribution in California.<\/p>\n<p><strong>2) Host Range: <\/strong>Old man\u2019s beard is capable of growing in variety of habitats and on a number of substrates including trees and shrubs on forest margins, riverbanks, fence lines, dunes, hedgerows, grasslands and even in urban areas. (Invasive species compendium: CABI Database: <em>Clematis vitalba<\/em>). It has been observed recently near creeks, slopes and forest areas along California coast.\u00a0Risk is <span style=\"color: #008000;\"><strong>High (3)<\/strong><\/span>.<\/p>\n<p style=\"padding-left: 30px;\">Evaluate the host range of the pest. <strong>Score:<\/strong> <strong><span style=\"color: #008000;\">3<\/span><\/strong><\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) has a very limited host range.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) has a moderate host range.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>High (3)<\/strong> has a wide host range.<\/span><\/p>\n<p><strong>3) Pest Dispersal Potential: <\/strong>Old man\u2019s beard is pollinated by wind and insects. It can produce up to 100,000 seeds per plant and seeds can remain viable up to five years. (Kings County Noxious Weed Control Program). Seeds can be spread by wind, water, humans and animals. It can also spread by fragmentation when roots are produced from both separated and attached stem fragments. This weed can be accidentally spread along road sides by turbulence created by moving motor vehicles. Additionally, it has been introduced intentionally as an ornamental plant (Invasive species compendium: CABI database: <em>Clematis vitalba<\/em>).\u00a0Risk is <strong><span style=\"color: #008000;\">High (3)<\/span>.<\/strong><\/p>\n<p style=\"padding-left: 30px;\">Evaluate the natural and artificial dispersal potential of the pest. <strong>Score:<\/strong> <span style=\"color: #008000;\"><strong>3<\/strong><\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) does not have high reproductive or dispersal potential.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) has either high reproductive or dispersal potential.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211; <strong>High (3)<\/strong> has both high reproduction and dispersal potential.<\/span><\/p>\n<p><strong>4) Economic Impact: <\/strong><strong>\u00a0<\/strong>Old man\u2019s beard is a host of Alfalfa mosaic virus (Polak, 1986). There may be an increased risk of disease transmission by <em>Clematis vitalba <\/em>near vineyards. It has been regarded as a minor weed in European vineyards as well as a weed of pine plantations (Mitchell, 1975). Old man\u2019s beard is poisonous to grazing livestock animals (West, 1991).\u00a0Risk is<strong><span style=\"color: #008000;\"> High (3)<\/span>.<\/strong><\/p>\n<p style=\"padding-left: 30px;\">Evaluate the economic impact of the pest to California using the criteria below.<\/p>\n<p style=\"padding-left: 30px;\"><strong>Economic Impact: <span style=\"color: #008000;\">A, B, E, F<\/span><\/strong><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>A. <\/strong>The pest could lower crop yield. <\/span><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>B. <\/strong>The pest could lower crop value (includes increasing crop production costs).<\/span><\/p>\n<p style=\"padding-left: 30px;\">C. The pest could trigger the loss of markets (includes quarantines).<\/p>\n<p style=\"padding-left: 30px;\">D. The pest could negatively change normal cultural practices.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>E. <\/strong>The pest can vector, or is vectored, by another pestiferous organism.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>F. <\/strong>The organism is injurious or poisonous to agriculturally important animals.<\/span><\/p>\n<p style=\"padding-left: 30px;\">G. The organism can interfere with the delivery or supply of water for agricultural uses.<\/p>\n<p style=\"padding-left: 30px;\"><strong>Economic Impact Score:<\/strong> <span style=\"color: #008000;\"><strong>3<\/strong><\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) causes 0 or 1 of these impacts.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) causes 2 of these impacts.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>&#8211; High (3) <\/strong>causes 3 or more of these impacts.<\/span><\/p>\n<p><strong>5) Environmental Impact: <\/strong>Infestation with Old man\u2019s beard reduces biodiversity by blocking the light and out-competing native plants and trees. This could cause extirpation of local species that have restricted distributions. Its vines can form a dense, light absorbing canopy that suppresses all vegetation it climbs. Its vigorous growth and heavy weight can break the trees beneath it, leaving previously heathy forest a low, long-lived thicket of vines. (Global Invasive Species Database). Damage from old man\u2019s beard can enhance invasion of native habitats by other invasive plants. As it occurs on public land, its presence will lead to treatment programs.\u00a0Risk is<strong><span style=\"color: #008000;\"> High (3)<\/span>. <\/strong><\/p>\n<p style=\"padding-left: 30px;\">Evaluate the environmental impact of the pest on California using the criteria below.<\/p>\n<p style=\"padding-left: 30px;\"><strong>Environmental Impact: <span style=\"color: #008000;\">A, C, D<\/span><\/strong><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>A. <\/strong>The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.<\/span><\/p>\n<p style=\"padding-left: 30px;\">B. The pest could directly affect threatened or endangered species.<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>C. <\/strong>The pest could impact threatened or endangered species by disrupting critical habitats.<\/span><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>D. <\/strong>The pest could trigger additional official or private treatment programs.<\/span><\/p>\n<p style=\"padding-left: 30px;\">E. The pest could significantly impact cultural practices, home\/urban gardening or ornamental plantings.<\/p>\n<p style=\"padding-left: 30px;\"><strong>Environmental Impact Score:<\/strong> <span style=\"color: #008000;\"><strong>3<\/strong><\/span><\/p>\n<p style=\"padding-left: 30px;\">&#8211; Low (1) causes none of the above to occur.<\/p>\n<p style=\"padding-left: 30px;\">&#8211; Medium (2) causes one of the above to occur.<\/p>\n<p style=\"padding-left: 30px;\"><strong>&#8211; <span style=\"color: #008000;\">High (3) <\/span><\/strong><span style=\"color: #008000;\">causes two or more of the above to occur.<\/span><\/p>\n<h5><strong>Consequences of Introduction to California for Old man\u2019s beard: <span style=\"color: #008000;\">High (14)<\/span><\/strong><\/h5>\n<p>Add up the total score and include it here.<\/p>\n<p style=\"padding-left: 30px;\">-Low = 5-8 points<\/p>\n<p style=\"padding-left: 30px;\">-Medium = 9-12 points<\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\">&#8211;<strong>High = 13-15 points<\/strong><\/span><\/p>\n<p><strong>6) Post Entry Distribution and Survey Information:\u00a0<\/strong>Old man\u2019s beard has a limited distribution in Marin County and has been observed sparsely in Santa Cruz and San Francisco counties (Consortium of California Harbaria).\u00a0<strong>Score:<\/strong><span style=\"color: #008000;\"><strong> -1<\/strong><\/span><\/p>\n<p style=\"padding-left: 30px;\">Evaluate the known distribution in California. Only official records identified by a taxonomic expert and supported by voucher specimens deposited in natural history collections should be considered. Pest incursions that have been eradicated, are under eradication, or have been delimited with no further detections should not be included.<\/p>\n<p style=\"padding-left: 30px;\">-Not established (0) Pest never detected in California, or known only from incursions<strong>.<\/strong><\/p>\n<p style=\"padding-left: 30px;\"><span style=\"color: #008000;\"><strong>-Low (-1) <\/strong>Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/span><\/p>\n<p style=\"padding-left: 30px;\">-Medium (-2) Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate\/host areas.<\/p>\n<p style=\"padding-left: 30px;\">-High (-3) Pest has fully established in the endangered area, or pest is reported in more than two contiguous or non-contiguous suitable climate\/host areas.<\/p>\n<h5>Final Score:<\/h5>\n<p>The final score is the consequences of introduction score minus the post entry distribution and survey information score: <span style=\"color: #008000;\"><strong>High (13)<\/strong><\/span><\/p>\n<h5><strong>Uncertainty: <\/strong><\/h5>\n<p>Old man\u2019s beard may not spread and get established in drier areas of California but has it has a strong ability to grow and spread in the coastal areas with ample moisture and higher than average precipitation. It has not yet spread to vineyards and pine plantations in California, but has done so in Europe.<\/p>\n<h5><strong>Conclusion and Rating Justification: <\/strong><\/h5>\n<p>Old man\u2019s beard has been recognized as a threat in Oregon and Washington. The fact that it has been observed multiple times, growing in the areas of Marin and Santa Cruz counties indicates that it can spread and get established in coastal areas of the California. An \u201cA\u201d rating is proposed at this time for this invasive weed, as it can still be eradicated from California.<\/p>\n<h5><strong>References:<\/strong><\/h5>\n<p>Plants Profile of <em>Clematis vitalba<\/em> (evergreen clematis), Accessed:10\/06\/2016\u00a0<a href=\"http:\/\/plants.usda.gov\/core\/profile?symbol=CLVI6\" target=\"_blank\" rel=\"noopener\">http:\/\/plants.usda.gov\/core\/profile?symbol=CLVI6<\/a><\/p>\n<p>West CJ, 1991. Literature review of the biology of <em>Clematis vitalba<\/em> (old man&#8217;s beard). DSIR Land Resources Vegetation Report No. 725. Library@landcareresearch.co.nz.<\/p>\n<p>Invasive Species Compendium- <em>Clematis Vitalba, <\/em>Accessed:10\/06\/2016\u00a0<a href=\"http:\/\/www.cabi.org\/isc\/datasheet\/14280\" target=\"_blank\" rel=\"noopener\">http:\/\/www.cabi.org\/isc\/datasheet\/14280<\/a><\/p>\n<p>Kings county Noxious Weed Control Program: Best Management Practices- Old Man\u2019s Beard\u00a0<a href=\"http:\/\/your.kingcounty.gov\/dnrp\/library\/water-and-land\/weeds\/BMPs\/Old-mans-beard-Clematis-vitalba-control.pdf\" target=\"_blank\" rel=\"noopener\">http:\/\/your.kingcounty.gov\/dnrp\/library\/water-and-land\/weeds\/BMPs\/Old-mans-beard-Clematis-vitalba-control.pdf<\/a><\/p>\n<p>Plants for a Future: <em>Clematis vitalba<\/em>; Accessed: 10\/06\/2016\u00a0<a href=\"http:\/\/www.pfaf.org\/user\/Plant.aspx?LatinName=Clematis+vitalba\" target=\"_blank\" rel=\"noopener\">http:\/\/www.pfaf.org\/user\/Plant.aspx?LatinName=Clematis+vitalba<\/a><\/p>\n<p>Cal Flora: <em>Clematis vitalba<\/em>; Accessed: 10\/06\/2016\u00a0<a href=\"http:\/\/www.calflora.org\/cgi-bin\/county_taxon.cgi?where-calrecnum=8710\" target=\"_blank\" rel=\"noopener\">http:\/\/www.calflora.org\/cgi-bin\/county_taxon.cgi?where-calrecnum=8710<\/a><\/p>\n<p>Consortium of California Harbaria: Accessed 10\/20\/2016\u00a0<a href=\"http:\/\/ucjeps.berkeley.edu\/consortium\/\" target=\"_blank\" rel=\"noopener\">http:\/\/ucjeps.berkeley.edu\/consortium\/<\/a><\/p>\n<p>California Agriculture; University of California Agricultural and Natural Resources\u00a0<a href=\"http:\/\/calag.ucanr.edu\/Archive\/?article=ca.v068n03p89\" target=\"_blank\" rel=\"noopener\">http:\/\/calag.ucanr.edu\/Archive\/?article=ca.v068n03p89<\/a><\/p>\n<p>Global Invasive species database\u00a0<a href=\"http:\/\/www.iucngisd.org\/gisd\/species.php?sc=157\" target=\"_blank\" rel=\"noopener\">http:\/\/www.iucngisd.org\/gisd\/species.php?sc=157<\/a><\/p>\n<p>Mitchell AF, 1975. Three forest climbers, Ivy, old man&#8217;s beard, and honeysuckle. Forestry Commission Forestry Record, HM Stationery Office, 1-12<\/p>\n<p>Polak Z, 1996. Spontaneous hosts of alfalfa mosaic virus ascertained in ruderal plant associations in central Bohemia. Ochrana Rostlin, 32:161-165<\/p>\n<p>Pest and Damage Records Database: Plant Health and Pest Prevention Services, California Department of Food and Agriculture, Assessed: 10\/19\/2016<\/p>\n<p>Distribution of <em>Climatis vitalba: <\/em>Discover Life: Global Mapper- Global Biodiversity Information Facility.\u00a0<a href=\"http:\/\/www.discoverlife.org\/mp\/20m?kind=Clematis+vitalba\" target=\"_blank\" rel=\"noopener\">http:\/\/www.discoverlife.org\/mp\/20m?kind=Clematis+vitalba<\/a><\/p>\n<p><a href=\"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?attachment_id=2941\" rel=\"attachment wp-att-2941\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2941\" data-permalink=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?attachment_id=2941\" data-orig-file=\"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/Dist-of-Climatis-vitalba.jpg?fit=720%2C360&amp;ssl=1\" data-orig-size=\"720,360\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Dist-of-Climatis-vitalba\" data-image-description=\"&lt;p&gt;Distribution of Climatis vitalba: Discover Life: Global Mapper- Global Biodiversity Information Facility&lt;\/p&gt;\n&lt;p&gt;Source: &lt;a href=&quot;http:\/\/www.discoverlife.org\/mp\/20m?kind=Clematis+vitalba&quot; target=&quot;_blank&quot; rel=&quot;noopener noreferrer&quot;&gt;http:\/\/www.discoverlife.org\/mp\/20m?kind=Clematis+vitalba&lt;\/a&gt;&lt;\/p&gt;\n\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/Dist-of-Climatis-vitalba.jpg?fit=474%2C237&amp;ssl=1\" class=\"aligncenter size-full wp-image-2941\" src=\"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/Dist-of-Climatis-vitalba.jpg?resize=474%2C237\" alt=\"Dist-of-Climatis-vitalba\" width=\"474\" height=\"237\" srcset=\"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/Dist-of-Climatis-vitalba.jpg?w=720&amp;ssl=1 720w, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/11\/Dist-of-Climatis-vitalba.jpg?resize=300%2C150&amp;ssl=1 300w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/a><\/p>\n<h5><strong>Responsible Party:<\/strong><\/h5>\n<p>Raj Randhawa, Senior Environmental Scientist; Dean G. Kelch, Primary Botanist; California Department of Food and Agriculture; 1220 N Street,\u00a0Sacramento, CA 95814; Tel. (916) 654-0312; plant.health[@]cdfa.ca.gov.<\/p>\n<hr \/>\n<h3 style=\"text-align: left;\"><strong>Pest Rating: A \u00a0| \u00a0Proposed\u00a0<\/strong><strong>Seed Rating: P<\/strong><\/h3>\n<hr \/>\n<p style=\"text-align: left;\"><em>Posted by ls<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>California Pest Rating for Clematis vitalba: Old man\u2019s beard \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Ranunculales: Ranunculaceae Pest Rating: A \u00a0| \u00a0Proposed\u00a0Seed Rating: P PEST RATING PROFILE Initiating Event: Old Man\u2019s beard (Clematis vitalba) is listed as a B rated quarantine weed in Oregon and Class C noxious weed in Washington. In 2014, this &hellip; <a href=\"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2937\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Old Man\u2019s Beard | Clematis Vitalba<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":127,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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},"jetpack_post_was_ever_published":false},"categories":[7],"tags":[441,440,85],"class_list":["post-2937","post","type-post","status-publish","format-standard","hentry","category-plants","tag-clematis-vitalba","tag-old-mans-beard","tag-weeds"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-Ln","jetpack-related-posts":[{"id":3470,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=3470","url_meta":{"origin":2937,"position":0},"title":"Shining Cranesbill | Geranium lucidum L.","author":"Raj Randhawa","date":"March 10, 2017","format":false,"excerpt":"California Pest Rating for Geranium lucidum L.: Shining cranesbill Geraniales: Geraniaceae Pest Rating: A \u00a0| \u00a0Proposed\u00a0Seed Rating: R PEST RATING PROFILE Initiating Event: Geranium lucidum was first observed in 1998 in wildland behind University of California, Berkeley campus in Alameda County. It has been reported in Humboldt and Alameda counties\u2026","rel":"","context":"In &quot;Weeds&quot;","block_context":{"text":"Weeds","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=7"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1750,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1750","url_meta":{"origin":2937,"position":1},"title":"Phyllanthus urinaria L.; Chamberbitter","author":"Dean Kelch","date":"April 5, 2016","format":false,"excerpt":"California Pest Rating Phyllanthus urinaria L.; Chamberbitter Euphorbiaceae; Malpighiales Pest\u00a0Rating: C | Proposed\u00a0Seed Rating: R PEST RATING PROFILE Initiating Event: The species was given a temporary Q rating in 2014. History & Status: Chamberbitter is an herbaceous, annual herb that can grow 20-70 cm in height. The leaves are elliptic\u2026","rel":"","context":"In &quot;Weeds&quot;","block_context":{"text":"Weeds","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=7"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4320,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=4320","url_meta":{"origin":2937,"position":2},"title":"Prickly Acacia | Vachellia Nilotica","author":"Raj Randhawa","date":"January 4, 2018","format":false,"excerpt":"California Pest Rating\u00a0 for Click on image for photo citation Vachellia nilotica:\u00a0 Prickly acacia Solanales: Febaceae (Caesalpinioideae) Pest Rating: A |\u00a0Proposed Seed Rating: P PEST RATING PROFILE Initiating Event: Vachellia (Acacia) nilotica is a federal noxious weed and is one of the 20 worst weeds in Australia because of its\u2026","rel":"","context":"In &quot;Weeds&quot;","block_context":{"text":"Weeds","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=7"},"img":{"alt_text":"Vachellia nilotica","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2018\/01\/Babool_Acacia_nilotica_flowers_at_Hodal_W_IMG_1163-300x211.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1958,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1958","url_meta":{"origin":2937,"position":3},"title":"Weeds","author":"Admin","date":"May 13, 2016","format":false,"excerpt":"\u00a0 Weeds are simply an unwanted plant in the wrong place, at the right time.\u00a0 The weeds can directly and indirectly impact agricultural crops and are just as costly to the environment as any other unwanted species. Weeds are simply an unwanted plant in the wrong place, at the right\u2026","rel":"","context":"In &quot;Ratings&quot;","block_context":{"text":"Ratings","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=333"},"img":{"alt_text":"Weeds montage","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/weeds-featured-image1.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\/weeds-featured-image1.jpg?fit=1038%2C588&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2016\/05\/weeds-featured-image1.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\/weeds-featured-image1.jpg?fit=1038%2C588&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4558,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=4558","url_meta":{"origin":2937,"position":4},"title":"False Pickerel Weed | Monochoria vaginalis (Burm.f.) C. Presl ex Kunth","author":"Kyle Beucke","date":"January 31, 2018","format":false,"excerpt":"California Pest Rating for False Pickerel Weed | Monochoria vaginalis (Burm. f.) C. Presl ex Kunth Commelinales: Pontederiaceae Pest Rating: A |\u00a0\u00a0Proposed Seed Rating: R PEST RATING PROFILE Initiating Event: Monochoria vaginalis, a Federal Noxious Weed, is currently Q-rated. Seeds of this species were recently found in rice from California.\u2026","rel":"","context":"In &quot;Weeds&quot;","block_context":{"text":"Weeds","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=7"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4263,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=4263","url_meta":{"origin":2937,"position":5},"title":"Turkey Berry | Solanum torvum","author":"Raj Randhawa","date":"December 1, 2017","format":false,"excerpt":"California Pest Rating for Turkey Berry |\u00a0\u00a0Solanum torvum Solanales: Solanaceae Pest Rating: C |\u00a0\u00a0Proposed Seed Rating: N\/A PEST RATING PROFILE Initiating Event: Solanum torvum was recently intercepted by Los Angeles County Agricultural commissioner\u2019s office at Long beach on 7\/20\/2017. Molecular analysis has confirmed the identification of this species on 8\/11\/2017.\u2026","rel":"","context":"In &quot;Weeds&quot;","block_context":{"text":"Weeds","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=7"},"img":{"alt_text":"TURKEY BERRY","src":"https:\/\/i0.wp.com\/blogs.cdfa.ca.gov\/Section3162\/wp-content\/uploads\/2017\/12\/webSolanumTorvum_byForest-and-KimStarr-bugwood2186057-768x1024.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/2937","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\/127"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2937"}],"version-history":[{"count":12,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/2937\/revisions"}],"predecessor-version":[{"id":10174,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=\/wp\/v2\/posts\/2937\/revisions\/10174"}],"wp:attachment":[{"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}