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OMRI Listed


Why our Vermicompost is better!
Our vermicompost has all the benefits of castings, and more. We start with 100% organic dairy manure. We then compost that material in our specially designed aerated compost bins. This step removes pathogens, kills weed seeds, and releases heat energy so the worms can process the compost.
After composting is completed, we feed the compost to the worms. They process it for 60 days, going up and down through our continuous flow reactors. VermiCompost Trials 

Our continuous flow reactors keep the Vermicompost fully aerobic at all times. Being off the ground, there is no problem with gophers or moles. Moisture levels remain ideal.

Our Vermicompost made to the highest standards, is consistent one batch to the next, weed free, pathogen free and will make plants grow like nothing you have ever seen.
Vineyards have used our Vermicompost when they plant their vineyards. They have seen more balanced growth, increased vigor and fewer vine losses.
Our Vermicompost also makes an ideal compost tea inoculant, providing all the benefits of castings, plus enormous microbial populations and diversity.

If you would like to make a purchase or have any questions please call (707) 996-8561.



Red Wigglers...Eisenia fetida
“Worms are the intestines of the earth” said Aristotle. Smart man.

We raise red wigglers, Eisenia fetida, for composting. We only sell worms that we grow here on the farm. We harvest and ship them the same day so they arrive to you fresh and ready for their new home - your worm bin. Our worms are shipped via UPS, arriving the next day throughout most of Northern California.

We guarantee our deliveries, with that in mind, we ship when the weather is moderate. We do not ship in hot weather and we do not ship outside of the Northern California area.

If you would like to purchase worms or have any questions please call (707) 996-8561.




Vermi-extract IBCThe Power of TerraVesco Vermi-extract: Leveraging decades of experience, TerraVesco has developed a proprietary formulation for Vermi-extract, a liquid soil amendment that can be used alone or in combination with TerraVesco Vermicompost.

In trials at the Worm Farm we have used our Vermi-extract as a foliar spray on our roses and we find that it reduces any incidence of black spot, rust and powdery mildew. For the past two years we have sprayed our vineyard with vermi-extract, and have had no powdery mildew.

We have also used the vermicompost tea as a soil drench in the vineyard, on our roses and houseplants. All respond with a ‘Tea Glow’.

Offering a range of benefits:

  • Contains high microbial diversity, which improves plant vigor
  • Easy to apply through existing fertilization and irrigation systems
  • Further accelerates the building of soil microbiology when used in conjunction with TerraVesco Vermicompost
  • Has improved stability and extended shelf life


  • Made fresh
  • Made with 100% organic vermicompost.
  • Vermicompost made with 100% organic dairy manure, sourced locally, pre-composted, and finished by worms 


  • Add at planting
  • Use as a foliar spray
  • Add for plant vigor and a ‘Tea-Glow’
If you would like to make a purchase or have any questions please call (707) 996-8561.


Sonoma Valley Worm Farm

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Call Us: 800-447-6996 or 707-996-8561        Fax: 707-935-9166       Email: [email protected]