Grinding Cottonwood Surface Roots: A Risk to Tree Stability

An elderly homeowner trips on surface roots of three mature cottonwoods. Grinding them flush with the ground is tempting but dangerous.

Why Not to Grind

• Removes structural roots, increasing windthrow risk.
• Creates large wounds inviting decay fungi and borers.
• Disrupts water/nutrient uptake.

Safer Alternatives

• Mulch over roots with 2–3″ wood chips (levels surface, protects roots).
• Redirect foot traffic with a stepping-stone path.
• If roots lift pavement, consider root barrier installation by a pro.

Cottonwoods are fast-growing, weak-wooded, and surface-rooted by nature. Accept the roots or plan for eventual removal/replacement.