Oshkosh advisory board refines tree-protection language, opts to redraft for council review

The Oshkosh Sustainability Advisory Board spent the bulk of its Dec. 2 meeting reviewing a redline of Chapter 26 (Trees and Vegetation) and identifying changes they want before sending the language on for staff and legal review.

A board member who prepared the draft circulated printed copies and walked the group through proposed edits to definitions, city-forester duties, prohibited acts, planting and removal rules, construction protections and penalties. The draft aims to promote native canopy coverage and biodiversity while reducing stormwater surge volume and urban heat impacts.

Members debated how to define the tree-protection zone. The draft includes a 15-foot radius in one section and a separate definition for the tree canopy drip line. Several members said the fixed 15-foot radius is sometimes inappropriate (for example, tall pines with small driplines) and proposed either using the drip line alone or adopting the greater of the two measures. One member summarized the compromise as offering options: “a 15-foot radius or the extent of the drip line,” to give flexibility depending on tree form.

Discussion also covered scope and enforcement language. Members recommended replacing references to “person” with “person or entity” so contractors or corporations cannot avoid responsibility if their work harms public trees; they suggested drafting language that holds a contracting company financially accountable rather than only an individual worker.

On construction protections, the board debated whether marking methods should be limited to trunk flagging or should require physical barriers (temporary fencing or stanchions) placed at or beyond the drip line to prevent root compaction and mechanical damage. Several members said trunk flagging alone could be misinterpreted or insufficient to prevent damage during reconstruction.

The board reviewed the draft penalty provision in Section 13, which currently references forfeiture not to exceed $500 and, in default of payment, possible imprisonment. Members favored replacing criminal penalties with civil remedies and fees that capture the cost of city work and recovery. They also supported a requirement that removed public trees be replaced “in kind where feasible” or by equivalent caliper (including multiple smaller trees when a like-for-like replacement is not practical), with native Wisconsin species preferred.

Rather than finalize language, the board asked the drafter to synthesize the discussion into a clearer, consolidated rewrite for review by staff and legal. Members indicated the item will likely return for additional review in January before any referral to the city council or formal staff submittal.

The board made no formal ordinance motion or vote on the revisions at this meeting; the action taken was direction to redraft and reconvene.

What happens next: the board member who prepared the draft will produce a revised version incorporating the board’s comments; staff and the city forester will be involved in subsequent reviews, and the board expects to revisit the item at a future meeting in January.