Brick Garden Edging: Planning and Installation Guide

This guide covers brick garden edging and the material, design, and installation checks that shape a durable masonry project.

Creating a brick garden edge can add a touch of elegance and functionality to your outdoor space. A well-constructed brick edge defines garden beds, prevents soil erosion, and enhances the overall appearance of your landscape. In this extensive guide, we will walk you through every step of building a durable and attractive brick garden edge.

Planning Your Brick Garden Edge

1. Design and Layout

Before starting your project, a clear design and layout are essential for a successful garden edge.

• Choose Your Style: Decide on the style of your brick garden edge. Options include straight, curved, or even a combination of both. Consider how it will complement your garden’s existing features.
• Measure the Area: Use a measuring tape to determine the length and height of the garden edge. Mark the area with stakes and string to visualize the layout and ensure accurate measurements.
• Plan for Drainage: Ensure that your design includes proper drainage to prevent water from pooling behind the brick edge, which could damage the structure over time.

2. Select Materials

The choice of materials is critical for both aesthetics and durability.

• Bricks: Opt for clay bricks or concrete bricks. Clay bricks are more traditional and provide a classic look, while concrete bricks offer a range of colors and textures.
• Mortar: Use masonry mortar suitable for outdoor applications. This will provide the necessary bonding strength and weather resistance.
• Additional Materials: You might also need landscape fabric to prevent weeds, gravel for drainage, and sand for leveling.

Preparing the Site

1. Excavate and Prepare

Proper site preparation is crucial for ensuring the stability and longevity of your brick garden edge.

• Mark the Outline: Use stakes and string to mark the outline of your garden edge. This will serve as a guide during excavation and brick laying.
• Excavate the Trench: Dig a trench along the marked line. The depth should be about 6-8 inches to accommodate the bricks and mortar. The width should be slightly wider than the bricks to allow for proper mortar application.
• Level the Base: Ensure the bottom of the trench is level and compacted. You can use a hand tamper or a plate compactor for this purpose.

2. Install a Base Layer

Creating a solid base is essential for the stability of the brick edge.

• Add Gravel: Pour a 2-3 inch layer of gravel into the trench. This will provide drainage and prevent the bricks from shifting over time.
• Level the Gravel: Use a rake to level the gravel, and then compact it with a tamper or compactor.

Building the Brick Garden Edge

1. Lay the Bricks

The actual construction involves laying the bricks in your chosen pattern.

• Apply Mortar: Spread a layer of mortar in the trench where the first course of bricks will be placed. Use a trowel to smooth and level the mortar.
• Place the Bricks: Begin laying the bricks on top of the mortar. Ensure they are aligned and level. You may need to cut some bricks to fit the ends or curves of your garden edge.
• Check for Alignment: Use a level to check that each brick is aligned properly. Adjust as needed while the mortar is still wet.
• Add Mortar Between Bricks: After placing each brick, apply mortar between the bricks to fill the joints. Smooth the joints with a trowel for a clean finish.

2. Build Up the Courses

Continue building the garden edge by adding additional courses of bricks.

• Stagger the Joints: For added strength and stability, stagger the joints between courses. This will help distribute the weight more evenly.
• Maintain Level: Continuously check the level of each course to ensure a straight and even garden edge.

3. Finish and Seal

Once the bricks are laid, finishing touches enhance both appearance and durability.

• Clean Excess Mortar: Remove any excess mortar from the bricks while it is still wet. A damp sponge or cloth can be used for this purpose.
• Let It Set: Allow the mortar to cure completely before applying any pressure or filling the garden bed. This typically takes 24-48 hours.
• Seal the Bricks: Apply a brick sealant to protect the surface from weathering and stains. Follow the manufacturer’s instructions for application.

Maintenance and Care

1. Regular Cleaning

Maintaining your brick garden edge is essential for long-term durability.

• Remove Weeds: Regularly check for and remove weeds that may grow between the bricks. Use a garden weeder or hand tools to keep the area clean.
• Clean Bricks: Periodically clean the bricks with a mild detergent and water. Avoid using harsh chemicals that can damage the brick surface.

2. Inspect and Repair

Routine inspections and timely repairs can prevent larger issues.

• Check for Damage: Inspect the garden edge for any signs of damage or shifting. Address any issues promptly to prevent further problems.
• Reapply Mortar: If you notice any loose bricks or gaps in the mortar, reapply mortar as needed to maintain the integrity of the garden edge.

Choose an Edge That Fits the Site

A brick garden edge can define a planting bed, separate lawn from a path, or create a low visual border. Its design depends on the soil, frost exposure, water flow, mower access, and whether it will retain soil. A single course set in a shallow bed is not a retaining wall. If the edge must hold back a raised bed, support paving, carry vehicle loads, or stand high above grade, use a designed system with suitable foundation, drainage, and restraint. Check buried utilities before digging and confirm any local restrictions on work near shared boundaries.

Choose a brick intended for the exposure. Some face bricks are not designed for repeated ground contact, freeze-thaw, or deicing salts. Ask the supplier for product data and use a suitable paver or landscape unit where appropriate. Lay out a gentle curve with a garden hose or marking paint, then measure the length and dry-lay units around the curve. Tight radii may require cuts or a different unit shape. Keep the top elevation consistent with the lawn and adjacent path so the edge does not become a trip hazard or block drainage.

Prepare the Trench and Base

Remove sod, roots, and loose organic soil along the marked line. Excavate to a depth that accommodates the base material and the chosen brick orientation, while leaving enough of the unit visible for the intended edge. The trench width should allow the brick and any required restraint. Check grade with a level or string line and plan how surface water will flow. Do not create a low channel that sends runoff toward a house, basement wall, or neighbor’s property.

Place a suitable compactable base in thin lifts and compact it evenly. A stable base matters because soft or uneven soil can cause units to tilt, separate, or settle. The exact material and depth depend on soil, climate, unit type, and expected loading; follow local landscape specifications or product guidance. For a simple border, a bedding layer may be suitable, but a frost-prone or frequently saturated location may need additional preparation. If mortar is used, check that the supporting base and footing are appropriate for a mortared assembly and that water can drain rather than being trapped behind it.

Set the Brick and Control the Line

Place units in the planned orientation, checking alignment and height as you progress. For a dry-laid edge, use consistent joints and fit units tightly enough for stability without forcing them. Add edge restraint where the system requires it and backfill carefully so the restraint is not disturbed. For a mortared edge, prepare the mortar specified for the unit and exterior exposure, spread a controlled bed, and tool joints when they reach the correct firmness. Mortar does not replace a stable foundation, and it may crack if the base moves.

Cut bricks with a suitable masonry saw and dust controls, and wear the required eye, hearing, and respiratory protection. Avoid striking a unit in a way that can create sharp fragments. Check the edge from several angles and correct the curve before the base or mortar locks it in. Leave any specified movement joint at a connection to a wall, step, or rigid paving. Keep the finished top below or flush with adjacent mowing surfaces if a wheel or blade could strike a raised course.

Drainage, Backfill, and Maintenance

Backfill both sides in manageable layers and restore the intended grade. Do not pack wet soil against a fresh mortared edge. If the border retains a small amount of soil, keep drainage pathways open and avoid directing irrigation toward the back of the units. Check that downspouts and paved surfaces do not discharge into the bed. In freezing climates, standing water can contribute to movement and surface deterioration, so drainage and frost-suitable materials matter.

After settling, inspect for rocking units, open joints, low spots, or water collecting along the edge. Reset loose dry-laid bricks and replace damaged units. For a mortared edge, determine whether a crack follows a movement joint or reflects base settlement before patching it. Keep weeds and roots from pushing units out of alignment. A well-planned brick border uses suitable materials, a level compacted base, controlled drainage, and maintenance suited to the site; the pattern is only the visible part of that work.

Related masonry reading: Brick Fireplace Construction: Planning and Safety and Brick pillar in a wall: Guide.

Conclusion

Building a brick garden edge not only enhances the visual appeal of your outdoor space but also provides practical benefits such as defining garden beds and preventing soil erosion. By following this detailed guide, you can successfully create a durable and attractive garden edge that will last for years. With careful planning, quality materials, and proper maintenance, your brick garden edge will be a standout feature in your garden.