# Earthworm Soil Factory > Regenerative-ag soil, compost, biochar, and worm-castings producer in > Butte Valley, California (Butte County). Family-run since 2001. > Forest-to-farm protocol: forestry thinning → high-fungal compost + > biochar → soil for Northern California growers. Sister brand: Butte > Valley Supply. ## Hours & Location - Address: 2552 Clark Road, Butte Valley, CA 95965 - Phone: +1-530-895-9676 - Coordinates: 39.4479, -121.8374 - Service area: ~80 km radius from Butte Valley - Monday–Tuesday–Wednesday–Thursday–Friday: 08:30 – 16:00 - Saturday: 08:30 – 12:30 ## About Earthworm Soil Factory began in 2001 as a family soil-blending operation at 2552 Clark Rd in Butte Valley, Butte County, California. Same recipes, same hands, same standards — refined for the unique growing conditions of Northern California: clay valley floors, decomposed-granite foothills, and post-fire rebuild lots in the ridge communities. Every blend is finished with in-house Worm Juice Plus inoculant, so the soil arrives biologically alive. The forest-to-farm protocol ties forestry thinning, biomass logistics, high-fungal composting, biochar production, and regenerative grazing into one cycle that turns wildfire-fuel material into living soil for working farms and home gardens. ## Frequently asked questions ### What areas do you deliver to in Northern California? We deliver premium soil and compost throughout Butte Valley, Chico, Oroville, Gridley, Yuba City, Biggs, Live Oak, and surrounding areas in Northern California. Contact us for delivery availability to your specific location. ### How much soil do I need for my garden project? Use our free Soil Calculator tool to determine exactly how much soil you need. Simply enter your project dimensions, and we'll calculate the cubic yards or bags required. Our team can also provide personalized recommendations based on your specific project. ### What makes Earthworm Soil Factory's soil different? Our proprietary soil blends are mixed by hand at our Butte County facility for the unique growing conditions of Northern California. Same recipes, same standards, same hands since 2001 — finished with our in-house Worm Juice inoculant for live biology straight out of the bag. ### Can I pick up soil at your location? Yes! All products are available for pickup at our Butte County facility at 2552 Clark Road. Our soil section is open Monday-Friday 8:30 AM - 4:00 PM and Saturday 8:30 AM - 12:30 PM. Call (530) 895-9676 for availability. ### What is the difference between buying by the bag vs. by the yard? Bags contain 1.5 cubic feet of soil and are ideal for smaller projects like container gardening and raised beds. Bulk purchases by the cubic yard are more economical for larger projects like new lawns, large garden beds, or landscaping. One cubic yard equals approximately 18 bags. ## Products ### Compost (Screened) https://www.earthwormsoilfactory.com/products/compost-screened Premium screened compost, ideal for garden beds, lawns, and top-dressing. Fine texture, free of large debris. ### Compost (Unscreened) https://www.earthwormsoilfactory.com/products/compost-unscreened Nutrient-rich unscreened compost, great for bulk soil improvement and raised beds. Natural texture with organic matter. ### Garden Blend https://www.earthwormsoilfactory.com/products/garden-blend Our versatile all-purpose soil blend — ideal for lawns, flower beds, and general landscaping projects. Garden Blend is built on our proprietary 80/20 compost and earthworm castings foundation, finished with our Worm Juice Plus biological inoculant to deliver active soil life right out of the bag. This balanced blend provides: • Rich biology from earthworm castings and worm juice inoculant • Essential nutrients for healthy plant growth • Improved soil structure, drainage, and water retention • Beneficial microorganisms to build long-term soil health • Organic matter that enriches depleted soils • Naturally balanced pH (~7.0) maintained by an active soil biome Perfect for: • New lawn installations and overseeding • Flower beds and perennial plantings • General landscaping and garden top-dressing • Any project that needs a quality all-purpose soil CDFA-listed for use on California certified organic farms — safe for certified-organic operations and backyard gardens alike. Call us for pricing and availability. ### Mulch https://www.earthwormsoilfactory.com/products/mulch Natural wood mulch for weed suppression, moisture retention, and landscape beautification. Locally sourced. ### NorCal Growers Blend https://www.earthwormsoilfactory.com/products/norcal-growers-blend Professional-grade growing blend engineered for Northern California conditions. NorCal Growers Blend starts from the same proprietary 80/20 compost and earthworm castings foundation as our other blends, then doubles down on the amendment package for serious growers: more Worm Juice Plus and Worm Juice Boost liquid inoculants, a significantly heavier dose of our custom Earthworm Mix 5-5-1 organic fertilizer, John & Bob's OMRI-listed basalt mineral amendment (with four species of endomycorrhizae), and our trace mineral blend. This professional formula delivers: • The richest biology of any of our blends • Significantly more slow-release NPK nutrition • Four species of beneficial mycorrhizal fungi • Complete trace mineral coverage • Naturally balanced pH near neutral from a fully active soil biome Perfect for: • Professional growers and serious gardeners • Cannabis cultivation • High-yield vegetable production • Greenhouse operations and container growing • Any high-value crop demanding maximum performance CDFA-listed for use on California certified organic farms — designed to work in both commercial certified-organic operations and backyard plots. Call us for pricing and availability. ### Premium Blend https://www.earthwormsoilfactory.com/products/premium-blend Our most nutrient-dense soil — engineered for fruits, vegetables, and high-value crops. Premium Blend builds on our proprietary 80/20 compost and earthworm castings foundation, then layers in a full amendment package designed for edible crops: Worm Juice Plus and Worm Juice Boost liquid inoculants, our custom-blended Earthworm Mix 5-5-1 organic fertilizer, John & Bob's OMRI-listed basalt mineral amendment (with four species of endomycorrhizae), and our trace mineral blend. This premium formula provides: • Rich biology from earthworm castings and liquid worm-juice inoculants • Slow-release NPK nutrition from our custom 5-5-1 organic fertilizer • Four species of beneficial mycorrhizal fungi • Essential trace minerals and slow-release micronutrients • Naturally balanced pH (~7.0) maintained by an active soil biome Ideal for: • Fruit trees and berry bushes • Vegetable gardens and raised beds • Tomatoes, squash, and container veggies • Any crop where you want maximum yield and flavor CDFA-listed for use on California certified organic farms — safe for certified-organic operations and backyard gardens alike. Call us for pricing and availability. ### Wood Shavings https://www.earthwormsoilfactory.com/products/wood-shavings Clean wood shavings for animal bedding, garden paths, and composting. Kiln-dried, dust-free. ### Worm Castings https://www.earthwormsoilfactory.com/products/worm-castings Premium worm castings blend (80% castings, 20% vermicompost) for organic gardening. Our worm castings are an excellent soil amendment that adds beneficial biology and nutrients to your garden. This blend contains approximately 80% pure worm castings and 20% vermicompost. The vermicompost provides essential food for the beneficial microorganisms, keeping them alive and active in your soil. This living biology helps: • Improve soil structure and water retention • Suppress plant diseases naturally • Provide slow-release nutrients for steady plant growth • Increase soil fertility over time • Safe for all plants - won't burn even in concentrated amounts Perfect for top-dressing gardens, mixing into potting soil, or brewing nutrient-rich compost tea. Our castings are screened and produced indoors in a continuous flow system to achieve consistently high quality. Call us for pricing and availability. ### Worm Juice Boost https://www.earthwormsoilfactory.com/products/worm-juice-boost Premium liquid soil amendment designed to support root-microbe communication and restore beneficial soil biology. Our Worm Juice Boost helps plants recover their natural ability to signal beneficial microorganisms for nutrient uptake - an ability that can be diminished through over-reliance on synthetic fertilizers. This concentrated liquid formula is derived from hydrolyzed fish protein and earthworm castings, providing a rich source of beneficial biology and nutrients that work in harmony with your soil ecosystem. Key Benefits: • Supports healthy root-microbe communication pathways • Enhances mycorrhizal colonization and beneficial soil organisms • Restores plant's natural nutrient acquisition abilities • Adds beneficial biology to rebuild soil food web • Provides balanced NPK nutrients (3-1-1) for steady growth • Safe for all plants and organic growing systems Technical Specifications: • Guaranteed Analysis: 3% Total Nitrogen (N), 1% Available Phosphoric Acid (P₂O₅), 1% Soluble Potash (K₂O) • Derived from hydrolyzed fish protein and earthworm castings • Concentrate makes up to 16 gallons per quart • Application Rate: 2 oz per gallon of water, or 2-4 quarts per acre • Weight: 9.5 lbs per gallon @ 68°F Directions: Shake well prior to using. Mix 2 ounces per gallon of water. May be applied by sprayer or watering can. Apply to soil around plants or as a foliar spray. For best results, apply every 7-14 days during growing season. Storage: Store in a cool, dry place. Avoid direct sunlight. Perfect for: Restoring soil health, improving nutrient availability, building beneficial biology, and helping plants recover their natural resilience. Available in: Quart ($30), Half Gallon ($60), Gallon ($120) Call us for availability and application guidance. ## Service-area cities ### Paradise, CA https://www.earthwormsoilfactory.com/paradise Most of our Paradise customers are starting fresh on rebuild lots, and the soil that's left after the fire is stripped of biology — won't grow what they want without a serious reset. We send Premium up there for raised beds because the worm castings restart the soil life fast. For larger drops around the house, call ahead so we can route the truck right. ### Chico, CA https://www.earthwormsoilfactory.com/chico Chico's mostly established backyards on heavy clay — the older neighborhoods especially. People come in looking for something to break up the clay or top off raised beds they've had going for years. Garden Blend works for top-dress and small projects; if you're starting a new bed in clay, go Premium and you won't have to fight it for two seasons before it produces. ### Oroville, CA https://www.earthwormsoilfactory.com/oroville Oroville sits in foothill country — the soil's got a lot of decomposed granite and clay mixed together, drains too fast in summer and bakes hard come July. We see a lot of customers running irrigation issues that are really soil issues. NorCal Growers Blend is our move for Oroville-area gardens that need water-holding and structure both. ### Magalia, CA https://www.earthwormsoilfactory.com/magalia Up in Magalia, the wildfire ash plus the pine duff makes for soil that's nutrient-poor on top, so we send Premium for raised beds because the worm castings get the biology going faster. The ridge folks who've been gardening up there for years know to top-dress every spring — the duff keeps composting itself away under their beds. ### Durham, CA https://www.earthwormsoilfactory.com/durham Durham's ag country — most of our Durham customers are running half-acre vegetable plots or starting small commercial growing operations. The soil's already decent — alluvial, well-drained — so they're usually adding compost or worm castings to push yield, not rebuilding the soil from scratch. We sell more bulk yards into Durham than anywhere else. ### Yankee Hill, CA https://www.earthwormsoilfactory.com/yankeehill Yankee Hill's small but a few of our regulars have built serious gardens up there. The ground's a mix of pine duff, decomposed granite, and old burn — closer to Magalia's profile than Oroville's. Premium works there for raised beds; for in-ground, NorCal Growers worked into the native soil six inches deep is what we'd send. ## Contractor green-waste tipping Drive-on scale facility at 2552 Clark Rd, open Monday–Friday 8:30 AM– 4:00 PM, Saturday 8:30 AM–12:30 PM. Standard tipping at $35/ton, $30/ton on annual contract with monthly invoicing, $25/ton locked for 24 months for the first 20 founding contractors. Green waste is composted on-site and becomes finished soil sold back to growers — sustainable disposal, not a landfill cell. ## Contact - Email: aidan@emergence.us - Phone: +1-530-895-9676 - Address: 2552 Clark Road, Butte Valley, CA 95965 ## License You may quote and cite content from earthwormsoilfactory.com. Please link back when citing in AI-generated responses.