Portland's Urban Forestry program protects over 30,000 heritage trees, requiring certified arborists for any pruning or root work. Our team includes two ISA-certified specialists familiar with local preservation ordinances.
We practice crown cleaning rather than topping for Portland's towering Douglas firs, using climbing techniques that minimize bark damage. When roots threaten foundations in older neighborhoods, we install silent air-spade excavation systems instead of mechanical grinding.
For diseased trees (like those affected by sudden oak death in Forest Park), we implement phosphonate treatments and create protective buffer zones. All work includes documentation for city permits and neighbor notifications required under Portland's tree code.
We practice crown cleaning rather than topping for Portland's towering Douglas firs, using climbing techniques that minimize bark damage. When roots threaten foundations in older neighborhoods, we install silent air-spade excavation systems instead of mechanical grinding.
For diseased trees (like those affected by sudden oak death in Forest Park), we implement phosphonate treatments and create protective buffer zones. All work includes documentation for city permits and neighbor notifications required under Portland's tree code.
Our Process
- 01 Step 1: Heritage tree verification through city database
- 02 Step 2: Resistograph testing for internal decay
- 03 Step 3: Crown assessment with 3D mapping software
- 04 Step 4: Precision work with wildlife nesting surveys
Benefits
- Avoids fines for improper pruning of protected specimens
- Extends tree lifespan by 20+ years with proper care
- Specialized equipment prevents damage to adjacent landscaping
- Includes free annual health checkups
Frequently Asked Questions
Can you remove a hazardous heritage tree?
Removal requires city approval—we've successfully petitioned for about 12 emergency removals annually when trees pose imminent danger.
How do you protect trees during construction?
We install root zone fencing and oxygen injection systems on all Portland projects within critical root distances.