Bark Beetle Information
Recent fires, storms and drought conditions have contributed to tree stress in the Columbia River Gorge. A newly documented bark beetle, the California fivespined Ips (Ips paraconfusus) has impacted ponderosa pine tree health in a few areas of the gorge.
Tree health
- WSU FS055E: Assessing Tree Health (pdf)
- Tree Notes: Identifying Dead and Dying Conifers on Private Lands (external pdf)
The California fivespined Ips (Ips paraconfusus)
- WA DNR Tree Link: California fivespined Ips: A pine engraver beetle new to Washington State (external pdf)
- USDA: California Fivespined Ips Beetle (external)
- ODF Forest Health Notes: Ips Beetles (external pdf-note insecticide recommendations do not apply in Washington State, contact your local extension office for more information)
- Tree Notes: Controlling Bark Beetles in Wood Residue and Firewood (pdf external link)
- Arizona Cooperative Extension: Managing Slash to Minimize Colonization of Residual Trees by Ips and Other Bark Beetle Species Following Thinning in Southwestern Ponderosa Pine (external pdf-note insecticide recommendations do not apply in Washington State, contact your local extension office for more information)