How to Build Garden Wall
Learn how to build garden wall with our detailed step-by-step guide. Follow our easy instructions to get it done right.
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0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Plan Wall Height and Location
Step 1: Plan Wall Height and Location
Determine wall height (under 4 feet usually doesn't need permit), mark location with string.
Landscape Design Book
Guide to planning retaining walls and gardens
2 Step 2: Excavate Trench for Base
Step 2: Excavate Trench for Base
Dig trench 6 inches deep and 6 inches wider than blocks for gravel base.
Digging Shovel
Round point shovel for excavating trench
3 Step 3: Add Gravel Base and Level
Step 3: Add Gravel Base and Level
Fill trench with 4-6 inches crushed gravel, compact and level perfectly.
Crushed Gravel
Base material for wall foundation (per ton)
Plate Compactor
Rental for compacting gravel base (per day)
4 Step 4: Lay First Course of Blocks
Step 4: Lay First Course of Blocks
Place first row of blocks on gravel, check level front-to-back and end-to-end.
Retaining Wall Blocks
Interlocking blocks for garden wall (each)
4-Foot Level
Level for checking wall alignment
5 Step 5: Stack Additional Courses
Step 5: Stack Additional Courses
Offset joints like bricks, use construction adhesive between layers for stability.
Landscape Block Adhesive
Adhesive for bonding retaining wall blocks
6 Step 6: Cap Wall and Backfill
Step 6: Cap Wall and Backfill
Install cap blocks on top row, backfill behind wall with gravel for drainage.
Wall Cap Blocks
Flat cap stones for finishing top of wall (each)