Science · Soils
Decomposed Granite (DG)
Granite-derived granular material used in paths and sometimes soil blends; grading varies.
Weathered rock or aggregate material
Profile
- Origin
- Weathered granitic rock
- Fines
- Fine fraction governs cohesion and permeability
- Stabilizers
- Binders change behavior and intended use
- Vegetation
- Compacted path DG is not a complete planting soil
Water & soil targets
- Moisture (VWC)
- Site-calibrated; measure field capacity and dry-down
- Salinity tolerance
- Not determined by this label; measure EC and relevant ions
- Drought tolerance
- Depends on usable storage, rooting depth and vegetation
Measure retention, infiltration and layer depths in place. Texture or construction labels do not define a universal irrigation threshold.
Problems to watch
- Erosion
- Compaction
- Dust or muddy fines
Stress signs
- Rills
- Hard surface
- Loose dusty patches
Where you'll find it
- Landscape paths
- Mineral aggregate blends
More soils
All Science profilesGeneral agronomic guidance and typical ranges; actual targets vary by site, soil, climate and season.