Cutting a 3-Inch Root on a 75-Foot Sequoia: Safe with a Root Barrier

One Root Cut Is Fine

An 8-ft downslope root (3-inch diameter) on a 75-ft Sequoia in Oakland needs removal for a retaining wall. Other large roots remain.

Impact

• No effect on health or stability—single root loss is negligible.
• No product safely prevents regrowth without harming the tree.

Better Solution: Root Barrier

Install a vertical HDPE root barrier along the wall between tree and structure. It blocks future root intrusion without harming the tree.