Building a Quartz Pebble Garden Base: Fabric, Compaction, Depth

Proper Substrate Preparation for a Decorative Stone Garden

For a 15 m² area (former lawn) to be covered with 7 mm quartz pebbles, the base must prevent weed growth, allow drainage, and resist settling.

Step-by-Step Base Construction

1. Excavate: Remove 100–150 mm (4–6 in) of soil/grass. Grade for slight slope away from structures.
2. Compact Subgrade: Use a plate compactor on the exposed soil. Critical for stability.
3. Lay Landscape Fabric: Heavy-duty, permeable, UV-stabilized woven polypropylene. Overlap seams 300 mm; secure with staples every 1 m.
4. Optional Sand Layer: 25 mm (1 in) coarse sand over fabric for leveling and cushion—compact lightly.
5. Place Pebbles: Spread quartz to 100 mm (4 in) depth. Rake even; do not compact stone.

Why Fabric Over Sand-Only?

• Fabric blocks weed growth from below indefinitely.
• Prevents stone migration into soil.
• Maintains drainage while separating layers.

Maintenance

Top up pebbles annually as they settle. Remove debris promptly to prevent soil buildup on fabric. Edge firmly (metal, stone, or concrete) to contain pebbles.

This method mirrors Japanese dry garden (karesansui) preparation principles adapted for modern materials.