Decomposed Granite vs Fill Dirt

Decomposed Granite

Granite that has weathered to the point of breaking into small pieces and fine particles. Creates a natural, rustic look that blends beautifully with desert and Mediterranean landscapes. When compacted, it forms a firm yet permeable surface.

Fill Dirt

Subsoil material free of organic matter, used for grading, filling, and raising elevation. Fill dirt is a lower-grade soil that lacks the nutrients of topsoil, making it ideal for structural and non-growing applications where settling must be minimized.

Decomposed Granite

• ✓ Patios
• ✓ Pathways
• ✓ Driveways
• ✓ Xeriscaping
• ✓ Ground cover
• ✓ Bocce courts

Fill Dirt

• ✓ Grading
• ✓ Filling depressions
• ✓ Raising elevation
• ✓ Backfill
• ✓ Construction site prep
• ✓ Under slabs

Decomposed Granite

• + Compacts into a firm walking surface
• + Natural, rustic appearance
• + Permeable — allows water infiltration
• + Low cost
• + Ideal for drought-tolerant landscaping

• − Can get muddy in heavy rain
• − Tracked indoors on shoes
• − Decomposes further over time and needs replenishing
• − Limited color options
• − Not suitable for high-traffic vehicle areas

Fill Dirt

• + Very affordable — often cheapest material available
• + Compacts firmly for structural support
• + Does not decompose or settle like organic soil
• + Widely available from construction sites
• + Ideal base under gravel or concrete

• − Not suitable for growing plants
• − Must be free of debris and contaminants
• − May contain clay that drains poorly
• − Needs compaction in layers for stability
• − Quality varies widely between sources

Decomposed Granite

Decomposed granite is a mix of fine particles and small chunks, typically 1/4" and smaller. Colors include gold, tan, brown, gray, and reddish-brown depending on the granite source. Stabilized DG (with resin binder) creates an even firmer surface.

Fill Dirt

Fine to coarse soil particles, free of organic matter like roots, grass, or leaves. Color ranges from tan to reddish-brown depending on local geology. "Clean fill" means free of debris, rocks larger than 3", and contaminants.