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Eagan forestry: ash losses high, oak wilt and invasive plants remain major concerns
Summary
The City of Eagan’s forestry supervisor briefed commissioners on the city’s tree‑care priorities: emerald ash borer (EAB) is killing untreated ash trees, oak wilt and drought/insect interactions continue to stress older trees, and limited staff and enforcement capacity constrain responses on private property.
Adam, the city’s forestry supervisor (first name only in the meeting record), told the commission that Eagan is at “the top of the death curve” for ash trees and that treated ash may live if maintained on a regular protection schedule.
Adam said the city treats about 400 public ash trees and that the program aims to preserve shade in locations where removing and replacing mature trees would not immediately restore canopy values—for example at athletic complexes where mature shade is important to fields. He said treated trees require regular follow‑up treatments and that treatment cycles can be adjusted only if the pest population drops.
On oak wilt, Adam said the city…
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