For county arborists, the emerald ash borer is public enemy #1
Of the approximately six million trees that the county maintains, nearly one million are ash trees. And the majority of them are within 15 miles of trees that are already infected.
One of the county’s main objectives is to replace dead ash trees. This will increase the county’s tree canopy and provide cost-effective and diverse trees to fight against an ongoing emerald ash borer pest problem.
In the spring of 2015, the county created a gravel-bed nursery at the Adult Corrections Facility in Plymouth to aid in this effort. The gravel-bed nursery is an irrigated planting bed that stores bare root trees while encouraging rapid root growth. The trees are planted in the gravel bed during the spring, watered consistently all spring and summer, and then transplanted in the fall. The nursery has 500 trees, representing 14 different species.