Emerald ash borer, or Agrilus planipennis, is an invasive insect native to Asia that arrived in Minnesota around 1990. As of ...

This native North American pest has a huge impact on trees. Bronze birch borers leave dead branches in the upper canopy that need removing. ‘It is crucial to have the deadwood pruned out ASAP to ...

Not the river birch tree. The river birch’s beautiful bark ... are closer than 2 inches apart to promote airflow through the canopy.