National Plant Diagnostic Network National Newsletter

The root collar is part of the tree’s trunk and requires the movement of oxygen and carbon dioxide in and...

There are about seventy-five species of ticks in the United States, present in nearly all habitats. In most regions of...

Oak wilt is a lethal disease that affects all native oak species in the eastern half of the United States....

Links of Interest: APHIS's Hungry Pests Site (FAQ pages, photos, pest tracker maps, reporting & mgmt tips) Center for Invasive...