Regular Members

• Bureau of Land Management
• Cascade Timber Consulting
• Green Diamond Resource Company
• Hancock Forest management
• Manulife Company
• Oregon State University
• PotlatchDeltic Corporation
• Port Blakely Tree Farms
• Rayonier Inc.
• Roseburg Forest Products
• Washington State Dept. of Natural Resources
• Weyerhaeuser Company 

Associate Members

• American Forest Management
• Starker Forests

Contractual Members

• Lone Rock Timber Company

Liaison Members

• Inland Empire Tree Improvement Cooperative
• Northwest Tree Improvement Cooperative
• USDA Forest Service, PNW Research Station