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Tree commission urges township-wide oak-wilt pruning moratorium; board asks staff for fiscal and enforcement options
Summary
The Tree Commission recommended expanding the oak-wilt pruning moratorium township‑wide and outlined mitigation steps (trenching, removal of infected trees, fungicide treatments within ~120 feet). The board asked staff to analyze fiscal impacts, enforcement language, and whether mitigation costs should be borne by the township or property owners.
Ferguson Township’s Tree Commission presented a technical briefing and policy recommendation on oak wilt during the October 20 board meeting, urging the board to extend an existing pruning moratorium beyond the regional growth boundary to the entire township and to consider administrative and enforcement language for mitigation.
Art Castell, chair of the Tree Commission, explained oak wilt transmission pathways: insect-vectored spread via pruning wounds in the growing season and root-to-root spread in connected oak stands. He recommended a moratorium on pruning during the growing season township-wide to reduce insect-vectored infections and described the standard mitigation response for outbreaks: trenching to sever roots around an infection perimeter, removal and proper disposal of infected trees and fungicide treatment of nearby trees (treatment typically focuses on trees within roughly 120 feet of a confirmed infection).
The commission said earlier policy limited moratorium enforcement to the regional growth boundary where outbreaks present greater risk to adjacent properties because of lot patterns; extending the pruning moratorium township‑wide would provide a consistent preventive rule. Castell noted mitigation can be targeted and that urbanized areas (smaller lots) present a higher priority for containment.
Board members asked about enforceability and financial exposure if property owners refuse mitigation on their land. The manager said the board could write enforcement duties and penalties into the code — for example, notice-and-cure procedures, graduated penalties, or municipal lien placement for noncompliance — but that each option carries fiscal and legal consequences. The board directed staff to return with ordinance language options, fiscal impacts and possible homeowner assistance or credit options if the township adopts a mitigation fund or cost-sharing approach.
Public comment from residents and a forestry professor supported action, with the professor stressing that oak wilt is manageable and that targeted mitigation can protect neighborhood tree value more cost‑effectively than reactive responses.
Next steps: staff will work with the urban forester and tree commission to draft ordinance language, enforcement steps and an analysis of fiscal impacts for board review.
