GoodGravel

#89 Stone vs Compost

Side-by-side comparison of #89 Stone and Compost to help you choose the right gravel for your project.

Overview

#89 Stone

Small angular crushed stone approximately 3/8 inch and smaller. Similar in size to pea gravel but with angular edges that provide better compaction and stability. A versatile fine aggregate used in both construction and landscaping applications.

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.

Common Uses

#89 Stone

  • Walkways
  • Pipe bedding
  • Asphalt mix
  • Between pavers
  • Top dressing
  • Drainage backfill

Compost

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

Pros & Cons

#89 Stone

  • + Angular edges compact better than rounded pea gravel
  • + Small size fills tight spaces
  • + Good for pipe bedding and utility trenches
  • + Comfortable enough for walkways
  • + Excellent drainage
  • Too small for driveway base layers
  • Can migrate without edging
  • Less decorative than pea gravel
  • May be tracked by shoes
  • Not widely stocked at all suppliers

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

Cost Comparison

Measure #89 Stone Compost
Per ton $22 – $40 $15 – $40
Per cubic yard $28 – $50 $20 – $50

Sizes & Colors

#89 Stone

Angular crushed stone pieces 3/8" and smaller. Color varies by quarry — typically gray, blue-gray, or tan. The angular shape distinguishes it from similarly-sized pea gravel.

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.

Published February 11, 2026

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