Regular Members

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

Associate Members

• 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