{"id":2473,"date":"2024-01-08T00:23:05","date_gmt":"2024-01-08T00:23:05","guid":{"rendered":"https:\/\/chapters.cnps.org\/oc\/?p=2473"},"modified":"2024-08-03T00:53:21","modified_gmt":"2024-08-03T00:53:21","slug":"2024-oc-emergent-invasive-plants","status":"publish","type":"post","link":"https:\/\/chapters.cnps.org\/oc\/2024\/01\/08\/2024-oc-emergent-invasive-plants\/","title":{"rendered":"2024 OC Emergent Invasive Plants"},"content":{"rendered":"
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This list represents the 2024 prioritization of the newest and potentially most environmentally disruptive non-native plant species in Orange County.<\/strong> This list is specific to non-native, naturalized plant species in Orange County, with very small populations, which also have a high probability of causing significant environmental damage and loss of biodiversity. These species are small enough populations, where complete control and extirpation is still feasible.<\/h5>\n
New detections, updates, or corrections should be reported to<\/span><\/strong>\u00a0invasives@occnps.org<\/a>.<\/h5>\n<\/div>\n
For information about the methodology for scoring, candidate species, and change highlights, read the<\/span> <\/a>“Emergent Invasive Plants in Orange County – A 2024 Update and Priority List”<\/span> <\/a>by Ron Vanderhoff.<\/a><\/span><\/h5>\n

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THE 2024 OC EMERGENT INVASIVE PLANT LIST<\/span><\/h3>\n

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Genista monspessulana <\/em><\/strong>\u2013 FRENCH BROOM<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.00<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Brassica fruticulosa <\/em><\/strong>\u2013\u00a0MEDITERRANEAN CABBAGE<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.14<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0\u00a0 \u00a0 Calflora Taxon Report<\/a><\/p>\n

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Galenia pubescens <\/em><\/strong>\u2013 COASTAL GALENIA<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.31<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a><\/p>\n

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Cenchrus longispinus <\/em><\/strong>\u2013 MAT SANDBUR<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.64<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Osteospermum calendulaceum <\/em><\/strong>\u2013 STINKING ROGER<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.64<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a><\/p>\n<\/div>\n<\/div>\n

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Cenchrus echinatus <\/em><\/strong>\u2013 SOUTHERN SANDBUR<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.71<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Volutaria tubuliflora <\/em><\/strong>\u2013 EGYPTIAN KNAPWEED<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 1.86<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Chrysanthemoides monilifera ssp. monilifera <\/em><\/strong>\u2013 BITOU BUSH<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.00<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Hypericum canariense <\/em><\/strong>\u2013 CANARY ISLAND ST. JOHN’S WORT
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OCCNPS Invasive Score:\u00a0 2.36<\/span><\/strong>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Senecio angustifolius<\/span><\/em><\/strong><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.36<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a><\/p>\n

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Centaurea diluta <\/em><\/strong>\u2013 NORTH AFRICAN KNAPWEED<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.50<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Parthenium hysterophorus <\/em><\/strong>\u2013 SANTA MARIA FEVERFEW<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.57<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Dipogon lignosus <\/em><\/strong>\u2013 OKIE BEAN<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.64<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n<\/div>\n

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Euphorbia terracina <\/em><\/strong>\u2013 GERALDTON CARNATION WEED<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.64<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Centaurea solstitialis <\/em><\/strong>\u2013 YELLOW STARTHISTLE<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.71<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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Rubus armeniacus <\/em><\/strong>\u2013 HIMALAYAN BLACKBERRY<\/strong><\/span><\/h5>\n

OCCNPS Invasive Score:\u00a0 2.71<\/strong><\/span>
\nOC Detections and Map:\u00a0 Calflora Observation Search<\/a>
\nAdditional Resources: \u00a0 \u00a0\u00a0 Calflora Taxon Report<\/a>,\u00a0 CAL-IPC Profile<\/a><\/p>\n

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This list represents the 2024 prioritization of the newest and potentially most environmentally disruptive non-native plant species in Orange County. 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