Planting Near a Septic Tank: Keep Trees 15+ Feet Away or Install a Root Barrier

Leyland cypress and dogwood near a septic tank? Roots will find and clog lines.

Safe Distance

15 feet minimum from tank and drain lines.

If You Must Plant Closer

Dig a 2-ft deep trench 2 ft from tank/lines. Install 16-inch wide aluminum flashing vertically, 1 inch above ground. Backfill. This blocks roots.

Protect your septic system—it's cheaper than replacing a drain field.