Become an EMTree: Observe your plants to prevent problems Insects and diseases can wreak havoc on your landscape plants, and in your woodlands. The damage can be unsightly and can become costly if not properly addressed. To help property owners identify and manage these issues, Iowa State University (ISU) Extension and Outreach in Woodbury, Dubuque, Polk, and Mahaska Counties and the ISU Extension and Outreach Plant and Insect Diagnostic Clinic is hosting three virtual workshops focused on the identifying, preventing, and treating disease and insect issues in trees and shrubs. Each workshop will include presentations by ISU Extension and Outreach specialists from the Plant Insect Diagnostic Clinic.