Premium Organic-Certified OMRI Compost for Gardens, Landscapes & Soil Restoration
 
Marin County Compost is a high-quality, OMRI & CDFA listed organic-certified compost for organic farming and gardening designed to dramatically improve soil health, plant vitality, and long-term soil structure. This dark, nutrient-rich compost is fully matured, biologically active, and free of synthetic additives—making it ideal for homeowners, vineyards, landscapers, and contractors looking for a truly organic soil amendment.
 
Produced from carefully processed green waste and organic inputs, this compost delivers the perfect balance of organic matter, microbial life, and slow-release nutrients. It improves soil fertility naturally while enhancing moisture retention, drainage, and root development across a wide range of planting applications.
 
Whether you’re revitalizing depleted soil in Mill Valley, amending garden beds in San Rafael, installing lawns, or improving planting areas for trees and shrubs in Petaluma, Marin County Compost provides consistent, professional-grade results.
 
Why Customers Choose Marin County Compost
Certified Organic – Safe for food gardens, native plants, and sustainable landscapes
CDFA Listed - Commonly used for organic farming
Fully Finished & Screened – No raw debris, no unfinished material
Rich, Dark Texture – Indicates high organic content and biological activity
Improves Soil Structure – Enhances aeration, drainage, and water retention
Supports Long-Term Plant Health – Encourages strong root systems and nutrient uptake
 
NOTE- All recycle materials may contain small traces of plastic & glass.
DOWNLOAND COMPOST SPEC SHEET
 
Bulk Delivery + Free Delivery on Full-load Orders
We offer bulk dump-truck delivery, with FREE DELIVERY on orders of 10+ cubic yards to select cities across Marin, Sonoma, Alameda, and Contra Costa counties, including:
 
Common applications for Marin County Compost
Garden Beds & Vegetable Gardens – Improves soil fertility, structure, and moisture retention for organic food gardens, flowers, and raised beds.
Tree & Shrub Planting – Enhances root development and nutrient uptake when used as a planting backfill or soil amendment.
Lawn Preparation & Renovation – Ideal for soil conditioning before sod installation, seeding, or lawn topdressing.
Landscape Installations & New Construction – Rebuilds depleted or disturbed soils on residential and commercial sites.
Sustainable & Organic Landscapes – Suitable for eco-friendly projects requiring certified organic soil inputs.
 
Application Rates & Coverage Guide:
Use the guidelines below to estimate how much Marin County Compost you’ll need for your project. Coverage may vary
 
Typical Application Rates
Garden Beds & Planters:
Mix 2–4 inches into existing soil
Lawn Preparation:
Incorporate 1–2 inches before seeding or sod installation
Topdressing Lawns:
Apply ½–1 inch evenly across turf
Tree & Shrub Planting:
Blend compost at 20–30% of the backfill volume
 
Coverage Per Cubic Yard
1 cubic yard covers:
~150 sq ft at 2 inches deep
~75 sq ft at 4 inches deep
 
Ordering slightly extra is recommended to account for settling and soil blending.
 
Bulk Delivery & Free Delivery Details:
Convenient Bulk Compost Delivery
Marin County Compost is delivered in bulk using residential-friendly dump trucks, making it ideal for driveways, job sites, and landscape projects where access is limited. Material is dumped cleanly in one location unless otherwise requested.
 
FREE Delivery on 10+ Cubic Yards
We offer FREE DELIVERY on orders of 10 or more cubic yards to select cities across Marin, Sonoma, Alameda, and Contra Costa counties.
 
Eligible cities include:
Santa Rosa, Sebastopol, Rohnert Park, Penngrove, Petaluma, Sonoma, Kenwood, Glen Ellen, Novato, San Rafael, Corte Madera, Mill Valley, Tiburon, San Pablo, Pinole, Hercules, Rodeo, Berkeley, Orinda, Lafayette, Walnut Creek, Pleasant Hill, Concord, Martinez, Benicia, and Vallejo.
 
This makes Marin County Compost one of the most cost-effective organic compost options for large residential and commercial projects.
 
Smaller Orders & Standard Delivery
Orders under 10 cubic yards are delivered at standard local delivery rates
Delivery pricing is based on time and distance, confirmed at checkout or by quote
Same-day delivery may be available, depending on location and order size for truck requirements
If you’re planning a larger project and want to maximize value, ordering 10+ cubic yards is the best way to save on delivery costs.
 
Frequently Asked Questions – Marin County Compost
Q. Is Marin County Compost certified organic?
Yes. This compost is certified organic and suitable for organic gardens, food crops, and environmentally conscious landscaping projects.
 
Q. Can I use this compost for vegetable gardens?
Absolutely. Marin County Compost is safe for vegetables, herbs, fruit trees, and raised garden beds.
 
Q. Can this compost be used alone or should it be mixed with soil?
It can be used as a soil amendment (recommended) or as a topdressing. For planting, blend compost into native soil rather than using it alone.
 
Q. How much compost should I order?
Coverage depends on depth. One cubic yard covers approximately 150 sq ft at 2 inches. Ordering slightly extra is recommended.
 
Q. Do you offer free delivery?
Yes. Free delivery is available on orders of 10+ cubic yards to select cities across Marin, Sonoma, Alameda, and Contra Costa counties.