Emerald Ash Borer Impact in Minnesota
What is the overall impact?
Emerald ash borer is causing a devastating ecological event throughout the Twin Cities. More than one in five metro area trees is an ash tree. Losing this many trees is comparable to a natural disaster, having both a large environmental and economic impact. Look outside, and imagine 20% of the visible mature trees being gone!
- All seven Twin Cities metro counties are under EAB quarantine.
- Statewide, Minnesota has an estimated 937 million ash trees.
- In Minnesota cities, 1 in every 5 trees is an ash tree.
Watch the Spread of EAB
This time-lapse map shows the spread of Emerald Ash Borer in the Twin Cities metro area from 2009 to 2021. The borders indicate the infestation radius around finds.
- Yellow indicates a newer infested area
- Orange indicates infestation has progressed
- Red indicates that all ash trees within the area are at high risk of infestation.
Should you keep your tree?
The environmental and economic value of trees is well documented. Mature ash trees provide a significant amount of valuable tree canopy in our community. For example, an average urban tree will:
Reducing flooding during storms and keeping pollution from our rivers and lakes.
Reduce CO2 in the atmosphere by over 600 pounds every year.
Produce the cooling effect of ten room-size air conditioners operating twenty hours a day.