Plant species are submitted for review. Anyone can request ODA to evaluate a species for listing. An internal review process is conducted to determine if a plant warrants additional evaluation. Plants of high concern, causing documented impacts, are placed on the Watch List for further review and background information gathering. Formal written risk assessments are prepared. Plants that score high on the risk assessment are presented to the OSWB for listing. Species that score low or are not listed by OSWB but kept on file for future reference or may be returned back to the Watch List. Statewide management plans are developed for A and T listed weeds. Plans for B listed weeds are determined on a case-by-case basis based on regional priorities and biological control targets. New listed weeds are added to the State Noxious Weed Quarantine (OAR 603-52-1200).
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