Landscape Edging Ideas: Mulch Beds, Rock Borders, and Clean Lines

The difference between a yard that looks maintained and one that looks landscaped often comes down to one thing: edging. A clean border between lawn and beds defines spaces, keeps materials where they belong, and gives everything a finished appearance.

Here are the most practical edging options for Central Indiana yards, along with when each one makes the most sense.

Steel Landscape Edging

Best for: Defining curved or flowing bed lines with a nearly invisible border.

Steel edging is thin (typically 1/4 inch), bends easily to follow curves, and sits low enough that you barely see it once installed. It creates a crisp line between mulch and lawn without drawing attention to itself.

It is the professional landscaper’s go-to for a reason. It holds mulch in, keeps grass out, and looks clean for years. Galvanized or powder-coated steel resists rust.

Cost: Moderate. Materials run about $2 to $4 per linear foot.

Natural Stone Border

Best for: Adding visual weight to a bed edge, especially with decorative stone or rock beds.

Stacking flat natural stone along the perimeter of a bed creates a substantial, permanent border. Indiana limestone, fieldstone, or river rock all work. The look is informal, rustic, and fits well with cottage, farmhouse, and natural landscape styles.

Stone borders double as a mowing strip — the lawn mower tire runs along the flat stone, giving you a clean cut without having to hand-trim.

Cost: Varies widely depending on the type of stone. Fieldstone collected from your property is free. Purchased limestone or decorative stone adds up for longer runs.

Brick Edging

Best for: Traditional and formal landscapes, homes with brick or masonry exteriors.

Brick set on end or at a 45-degree angle (soldier or sawtooth pattern) creates a classic border that matches brick homes well. It is labor-intensive to install but lasts decades.

Brick edging works with both mulch and rock beds and provides a clean mowing edge.

Cost: Moderate to high depending on the brick selected. Reclaimed brick is cheaper and adds character.

Aluminum or Plastic Edging

Best for: Budget projects and straight-line beds.

Plastic and aluminum edging is inexpensive and widely available at hardware stores. It works fine for basic separation between lawn and mulch but tends to heave out of the ground in Indiana’s freeze-thaw cycles. It is also visible and less attractive than steel or stone.

If you go this route, choose aluminum over plastic. It holds up better and looks less cheap.

Cost: Low. About $1 to $2 per linear foot.

Decorative Stone Strip

Best for: Creating a visual transition between lawn and mulch beds, or between two different materials.

A 4 to 6 inch strip of small decorative stone (like Brassfield, Meremec, or white marble chips) between the lawn edge and mulch bed adds a defined border and visual depth. It separates the green of the grass from the color of the mulch with a clean band of contrast.

This works especially well in front-yard foundation beds where curb appeal matters most.

Cost: Depends on the decorative stone selected, but you need relatively small quantities for a border strip.

Timber Edging

Best for: Raised beds, vegetable gardens, and straight-sided borders.

Pressure-treated 4x4 or 6x6 timbers staked into the ground create a strong, defined edge. They work well for raised planting beds and areas where you need to hold back a significant depth of mulch or soil.

Timbers are best for straight runs. They do not curve easily, so they are not ideal for flowing bed shapes.

Cost: Low to moderate. Pressure-treated timber is widely available and affordable.

Trench Edging (No Material)

Best for: A clean look with zero materials and zero cost.

Dig a narrow V-shaped trench (about 3 to 4 inches deep) along the bed line. The trench itself creates a defined separation between lawn and mulch. This is how many professional landscapers maintain bed edges — it looks sharp and costs nothing but time.

The catch: trench edges need to be re-cut once or twice a season as grass grows back into the gap. A half-moon edger makes this a quick job.

Tips for Any Edging Project

• Edge before you mulch. A defined border makes mulching easier and cleaner.
• Follow the natural shape of your beds. Gentle curves look more natural than sharp angles or perfectly straight lines (unless your landscape style calls for formal geometry).
• Keep edging at or slightly above grade. The top of the edging should sit at or just above soil level to contain mulch without creating a tripping hazard.
• Plan for mowing. If your edging material doubles as a mowing strip — stone, brick, or steel set flush — you eliminate the need for string trimming along that border.

Get Started

Whether you need mulch, decorative stone, river rock, or topsoil for your edging project, we carry it all at our yard on US Highway 40. Call (317) 538-7514 for pricing and delivery across Central Indiana.