When planning a landscaping or construction project, choosing the right materials is essential for both aesthetics and functionality. Two popular options for pathways, driveways, and garden beds are decomposed granite (DG) and gravel. While they may seem similar, these two materials have distinct characteristics that can impact their appearance, durability, and maintenance. In this post, we’ll explore the key differences between decomposed granite and gravel to help you make an informed decision for your next project.

What is Decomposed Granite?

Decomposed granite is a type of rock that has weathered and broken down into fine particles, often with a sandy texture. It is typically made from granite, which, over time, breaks into small, angular pieces due to weathering and natural processes. These particles can range from coarse sand to fine dust, creating a compact surface when compacted.

Key Characteristics of Decomposed Granite:

• Appearance: It usually has a rich, earthy color, with tones of gray, brown, or reddish hues. The texture is smooth and more uniform.

• Stability: When compacted, DG forms a solid, stable surface, making it an excellent choice for paths and driveways.

• Drainage: Because it’s a finer material, decomposed granite has good water drainage properties, especially when it’s not sealed or compacted too much.

• Maintenance: Over time, decomposed granite may need to be replenished or topped up as it can degrade in high-traffic areas.

What is Gravel?

Gravel is a more general term used to describe small, loose rocks that are typically more angular in shape. Unlike decomposed granite, gravel is often composed of a mix of different stone types like limestone, basalt, and sandstone, and it’s much larger in size. Gravel is commonly used for driveways, decorative paths, and as a base material for other constructions.

Key Characteristics of Gravel:

• Appearance: Gravel can range in color and size, with a rough texture. It includes stones of various sizes, from small pebbles to larger rocks.

• Stability: Gravel doesn’t compact as well as decomposed granite, which means it may shift over time, especially under heavy traffic or pressure.

• Drainage: Gravel is highly porous, allowing water to flow through easily, which makes it a great option for areas that need quick drainage.

• Maintenance: Gravel paths may require occasional raking or replenishing, especially if the stones shift out of place.

Key Differences Between Decomposed Granite and Gravel

1. Composition and Size

• Decomposed Granite: Consists of smaller, finely crushed granite particles.

• Gravel: Made of various types of stone and comes in a variety of sizes.

2. Texture and Appearance

• Decomposed Granite: Smooth and more uniform in appearance.

• Gravel: Rougher and more irregular in shape and size.

3. Compaction and Stability

• Decomposed Granite: Compacts easily to form a stable surface, ideal for driveways and pathways.

• Gravel: Doesn’t compact as well and can shift under pressure, which may require more maintenance.

4. Drainage

• Decomposed Granite: Provides good drainage, though it may not be as fast-flowing as gravel.

• Gravel: Offers excellent drainage due to the larger gaps between stones.

5. Maintenance

• Decomposed Granite: Requires occasional replenishing, especially in high-traffic areas.

• Gravel: Needs regular raking and replenishing, particularly if the stones shift over time.

6. Cost

• Decomposed Granite: Generally, DG can be more expensive due to its finer texture and stability.

• Gravel: Gravel tends to be more affordable, though costs vary depending on the type of stone and local availability.

Which One Should You Choose?

• For a Smooth, Compact Surface: If you need a smooth, firm surface, like for a walking path, patio, or driveway, decomposed granite is the better option due to its ability to compact and form a stable base.

• For Decorative, Loose Landscaping: Gravel is ideal for areas where a more rustic look or a loose, natural surface is desired. It’s also great for driveways and areas with heavy drainage needs.

Both decomposed granite and gravel are versatile, eco-friendly materials that can enhance the look of any landscaping project. The choice between them ultimately depends on your specific needs—whether you prioritize stability and smoothness or a more textured, natural appearance. By understanding the differences in composition, appearance, drainage, and maintenance, you can make an informed decision that will serve you well for years to come. If you would like further landscape design assistance please reach out to Cleator Landscape Design at 619-917-3644