Compost vs Crusher Run

Compost

Decomposed organic matter used as a soil amendment to improve soil structure, fertility, and water retention. Quality compost is dark, crumbly, and earthy-smelling. It adds beneficial microorganisms and nutrients that support healthy plant growth and improve poor soils.

Crusher Run

Dense blend of crushed stone and stone dust ranging from 1.5" down to fine particles. The fines fill voids between larger stones, creating a surface that self-compacts into an exceptionally firm, stable base. Crusher run is the most popular single-material solution for driveways and parking areas.

Compost

• ✓ Soil amendment
• ✓ Garden beds
• ✓ Lawn top-dressing
• ✓ Raised beds
• ✓ Tree and shrub planting
• ✓ Seed starting mix

Crusher Run

• ✓ Driveways
• ✓ Parking areas
• ✓ Road base
• ✓ Foundation sub-base
• ✓ Backfill
• ✓ Equipment pads

Compost

• + Dramatically improves soil structure and fertility
• + Increases water retention in sandy soils
• + Improves drainage in clay soils
• + Adds beneficial microorganisms
• + Reduces need for chemical fertilizers

• − Quality and composition vary widely between sources
• − Can be odorous when fresh
• − May contain weed seeds if not fully composted
• − Too rich for direct planting — must be mixed with soil
• − Settles significantly after application

Crusher Run

• + Self-compacts into an extremely stable surface
• + Single-layer application (no need for multiple grades)
• + Excellent load-bearing capacity
• + Affordable and widely available
• + Fines lock stones together to resist shifting

• − Not decorative — utilitarian gray appearance
• − Can become muddy if drainage is poor
• − Dusty in dry conditions
• − Tracks onto paved surfaces
• − Requires compaction equipment for best results

Compost

Fine, crumbly texture when fully decomposed. Dark brown to black color. Should smell earthy, not sour or ammonia-like. Screened compost has been filtered to remove large uncomposted pieces. Mushroom compost is a byproduct of mushroom farming and is particularly nutrient-rich.

Crusher Run

Mix of angular crushed stone from 1.5" down to fine stone dust. The blend of sizes is what makes it self-compacting. Color is typically gray or blue-gray depending on source rock. Sometimes called "crusher run" because it's the raw output of a stone crusher.