Managing Surface Roots on a Ponderosa Pine: Why Cutting Roots Is a Mistake

Root Biology Matters

Tree roots don't mirror the canopy; they spread laterally up to three times the canopy diameter, with 95% in the top 12 inches of soil. These shallow roots perform essential gas exchange.

Cutting Roots Causes Decline

Removing large surface roots severs the tree's respiratory system, initiating a slow decline that can take years to kill the tree. The nursery's advice to cut "anchor roots" is incorrect.

Better Solutions

• Create a mulched planting bed around the tree to eliminate mowing over roots.
• If the sidewalk is lifting, consider a curved sidewalk design or permeable pavers that flex.
• Consult a certified arborist for site-specific engineering solutions.