Surface Roots of Coastal Redwoods: Safe Cover Options

Coastal redwoods naturally develop shallow, spreading roots that often surface in lawns. Your 25-year-old trio is exhibiting normal behavior.

Recommended Solution: Sand Topdressing

• Spread **clean, coarse sand** (not soil, not mulch) over exposed roots.
• Maximum depth: **2 inches**—deeper layers restrict gas exchange and can smother roots.
• Reapply as needed when roots re-emerge (every few years).

Why Not Soil or Mulch?

• Soil compacts, reducing oxygen.
• Organic mulch >3 inches deep holds excess moisture, promoting root rot.
• Sand drains well, stays loose, and mimics the redwood’s natural alluvial habitat.

Long-Term Perspective

Redwood roots will continue to surface as the tree grows. Sand topdressing is a low-impact, repeatable management tactic—not a permanent fix. Avoid cutting surface roots; it destabilizes the tree and invites decay.