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Accelerated Emerald Ash Borer Program

Emerald Ash Borer (EAB) was first confirmed in Roseville in 2009 and quickly emerged as one of the most significant threats to the City’s urban forest. At the time, the City managed more than 2,100 public ash trees, representing a substantial portion of the overall canopy. According to the Minnesota Department of Natural Resources, without treatment or removal, all untreated ash trees are expected to die, creating severe risks to public safety, loss of canopy, and significant financial impacts. Initially, the City began with a gradual “as resources and opportunities arise” approach to EAB mitigation. However, as the impact of EAB hastened and more and more trees began to show the impacts of EAB (the so called EAB “Death Curve”), the City adopted a more rapid and proactive approach to EAB.

EAB1

In 2022, Roseville launched the Accelerated EAB Program to address all of Roseville’s public inventoried ash trees – ash trees in maintained park spaces and City right of way. The Accelerated EAB program:

  • Remove and replace or treat all inventoried public ash trees in a phased, multi-year program.
  • Minimize short-term canopy loss by pairing removals with timely replanting.
  • Diversify the City’s tree canopy to ensure long-term resilience against future pests and diseases.
  • Prioritize efficiency, community engagement, and public safety in all stages of implementation.

Ultimately, the City entered into a partnership with Tree Trust to implement the program, setting an ambitious goal of removing 914 ash trees, planting 1,152 new trees, and treating 238 heritage ash trees by 2025 at an anticipated cost of $1,400,000 by 2025.

For general EAB information, click here.

EAB2
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