Above: Nick Shipley, left, co-owner of Civano Nursery, discusses an Arizona ash tree with Viktoriya Popenko during Pima Smartscape’s 2018 Sustainable Landscapes Expo. Civano brought 100 trees to give ...

Emerald ash borers can kill ash trees in a short period, making identification of infestation and immediate treatment ...

Samples for the study were collected by researchers from Penn State, the Forest Service and other partners around the Oregon ash range, extending from California, Oregon and Washington into British ...