Alameda County has access to many different sources of locally produced bulk compost and mulch, vermicompost (worm castings), as well as sheet mulching materials like rolled and scavenged cardboard. Look through the various options that best fit your project type.
Tools for Finding Compost and Mulch
Wayfinding Cards
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Compost Hubs
Access free compost at multiple Compost Hub locations throughout Alameda County, available year-round to residential and community gardeners.
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Alameda County Compost for Agriculture Program (ACCAP)
Apply for large volumes of free or subsidized bulk compost, available to agricultural producers and urban farms in Alameda County.
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Compost and Mulch Marketplace
A directory of Bay Area vendors selling and delivering bulk compost, mulch, and sheet mulching materials.
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How do you know if your compost is high quality?
Assessing Compost Characteristics and Quality
Did you know that there are varieties of compost with different uses? How do you know if you're receiving high quality compost? We'll help clarify how commercial composters manage quality concerns such as heavy metals, pathogens, weed seeds, and contamination, and how you can verify characteristics and quality indicators for a specific compost product.