Redwood’s Homegrown Compost

Nearly 90 percent of Marin’s organics (food scraps and yard trimmings) come to Redwood Landfill’s WM EarthCare™ of Marin composting facility in Novato. This state-of-the-art composting facility produces compost approved for organic farming. Residents can be proud that their discarded organics are used to grow food and nourish local soil. Redwood Landfill’s facility offers a family of landscape products locally sourced and produced from 100% recycled materials.

Homegrown Compost

Made exclusively from local yard trimmings and residential food scraps at our Covered Aerobic Static Pile (CASP) composting facility, Redwood’s own Homegrown Compost is approved for organic farming by the Organic Materials Review Institute (OMRI) and is a California Department of Food and Agriculture certified Organic Input Material. This seal of excellence makes it a popular choice with Sonoma and Napa Valley vineyards as well as home gardeners, landscapers, and municipalities.

Redwood’s CASP system composts nearly 130,000 tons of material annually, following the US Composting Council’s Testing Assurance protocol.

Mulch

WM EarthCare™ Mulch is made from 100% recycled, clean, untreated lumber, which is coarsely ground to two inches and dyed with naturally occurring carbon and/or iron oxide. This natural process guarantees that it will retain its vibrant color for one whole year while also ensuring that it is safe for children and animals.

WM EarthCare™ Quality

USCC Seal of Testing Assurance US Composting Council created testing protocols to ensure that compost is tested to the highest industry standard and that consumers have information on the quality of the compost that they are using. USCC Certified laboratories test compost to measure: pH; Soluble Salts; Nutrient Content (Nitrogen, Phosphorus and Potassium); Organic Matter; Moisture Content; Particle Size; Maturity; Stability; contamination, Metals; and Pathogens. WM tests batches weekly and makes results available to the public. To read more about the test, visit US Composting Council. To see testing results go to www.wmearthcare.com.

CDFA Registered The California Department of Food and Agriculture conducts site visits to participating composters and takes independent samples to validate compost nutrition claims (1 percent nitrogen for WM Earthcare Homegrown Compost) and inspects feedstock and the composting process to ensure that it is compliant with the US Department of Agriculture National Organics Program.

OMRI Listed The Organic Materials Review Institute is a non-profit that provides an independent review of compost intended for use in certified organic production. Acceptable products are OMRI Listed. WM EarthCare Homegrown Compost is OMRI listed.