GARDENING RESOURCES

A retaining wall is a structure designed to hold back soil and prevent erosion, often used in landscaping to create level areas on sloped terrain. Here’s what you need to know:

Purpose of a Retaining Wall:

• Prevents soil erosion and stabilizes slopes.
• Creates usable flat spaces on uneven land.
• Adds aesthetic appeal to landscaping.
• Manages drainage and water runoff.

When choosing between boulders and segmental blocks for retaining walls, consider the following factors:

Boulder Retaining Walls

• Pros:
  • Natural Aesthetic:
    • Offers a rustic, organic look that blends well into landscaped or natural settings.
• Flexibility in Design:
  • Each boulder is unique, allowing for creative, free-form wall designs.
• Drainage:
  • Gaps between boulders can promote natural drainage, reducing hydrostatic pressure.
• Low Mortar/No Mortar Options:
  • Many boulder walls are built dry, reducing the need for mortar and making repairs easier.

• Cons:
  • Labor-Intensive Installation:
    • Requires careful selection, placement, and sometimes excavation to ensure stability.
  • Height Limitations:
    • Typically better suited for lower walls; achieving significant height may require professional engineering.
  • Irregular Shapes:
    • Variability in size and shape can make achieving a uniform look or consistent stability more challenging.
  • Cost Variability:
    • Quality boulders may be expensive or hard to source in some regions.

Segmental Block Retaining Walls

• Pros:
  • Engineered Consistency:
    • Manufactured in uniform shapes and sizes, which simplifies installation and alignment.
  • Structural Integrity:
    • Designed for stability and can be engineered to support taller walls.
  • Ease of Construction:
    • Many systems are designed for dry-stacking with interlocking features, reducing the need for mortar.
  • Versatility in Look:
    • Available in various textures, colors, and styles to match modern or traditional designs.
  • Drainage Options:
    • Often come with built-in drainage channels or can be easily combined with drainage solutions.

• Cons:
  • Less Natural Appearance:
    • Their uniformity can sometimes appear too manufactured compared to the organic feel of natural boulders.
  • Material Cost:
    • Quality segmental blocks can be costly, especially for larger projects or high walls.
  • Installation Specifics:
    • While easier to install, proper base preparation and drainage planning are essential for long-term performance.
  • Limited Flexibility:
    • The modular nature of blocks means design choices are somewhat predetermined by the available shapes and sizes.

Final Considerations:

• Aesthetics:
  • Choose boulders if you’re aiming for a natural, rustic look, and segmental blocks if you prefer a clean, modern appearance.
• Wall Height & Load:
  • For lower, decorative walls, boulders can work well. For taller or load-bearing walls, segmental blocks typically provide better engineered support.
• Budget & Labor:
  • Consider both material and installation costs. While boulders might offer a unique look, they can be more labor-intensive; segmental blocks might save time and provide consistency, but the material costs can add up.
• Site Conditions:
  • Evaluate drainage, soil type, and exposure to weather. Both systems require proper preparation to ensure longevity and stability.

Looking to invest in Landscaping your property? Call McCord’s Landscaping at 719-640-1134 today for a free quote!