Landscape Edging: Materials, Methods, and Pro Tips for Crisp, Lasting Borders

Edging separates "lawn" from "bed"—visually and functionally. Done right, it reduces maintenance, contains mulch, and elevates design. Done wrong, it's a wavy, heaving, grass-invaded headache. Here's how to get clean lines that last.

Why Edge?

• Stops grass rhizomes invading beds
• Contains mulch, gravel, soil
• Defines design lines (curves, geometry)
• Eases mowing (no trimming needed)
• Protects tree roots from mower damage

Material Options

Installation Methods

Trench-Set (Plastic, Metal, Composite)

1. Cut clean edge with half-moon edger or spade.
2. Trench 4–6" deep, vertical wall on bed side.
3. Set edging. Top 1/2–1" above soil.
4. Backfill bed side. Stake every 2–3'.

Mortar-Set (Stone, Brick, Pavers)

1. Trench 6–8", compacted gravel base.
2. Concrete footing (optional for stability).
3. Lay units in mortar. Level, align.
4. Joint with polymeric sand or mortar.

Poured Concrete Curb

1. Form with flexible boards.
2. Reinforce with rebar/wire.
3. Pour 4500 psi mix. Finish, cure.

Pro Tips for Longevity

• Compact the base. Loose soil = heaving.
• Use landscape fabric under edging → blocks grass roots.
• Set slightly proud (1/2"). Allows mulch containment, mower clearance.
• Curve smoothly. Kinks = weak points. Use garden hose to lay out curves.
• UV-resistant materials. Prevents plastic brittleness.

Pool/Pond Edging Special Case

Coping stone, tile, or concrete border. Non-slip. Chemical-resistant. Proper expansion joints. Professional installation strongly advised.

When to Hire a Pro

• Stone, brick, concrete
• Long runs (>100')
• Complex curves/grades
• Integration with irrigation, lighting
• Permit required

Edging is the frame around your garden picture. Invest in materials and installation that match the quality of what's inside the frame. Crisp edges make everything look intentional—and save hours of trimming every year.