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
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
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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