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Frequently Asked Questions

  • What types of earthworms do you use?

    We raise red wiggler worms known for composting organic matter.

  • Where is the earthworm farm located?

    Our farm is located in Thermal, Southern California near the Salton Sea.

  • What do you feed your earthworms?

    We feed our earthworms green waste material such as grass and tree clippings.

  • Do you sell earthworms?

    No, we do not sell our earthworms.

  • Can you tell us about the VermisTerra logo?

    The VermisTerra logo is a drawing of a happy earthworm eating a yellow leaf and converting it into food for plants to grow healthy green leaves.

  • What is the best temperature for storing VermisTerra earthworm castings and tea at?

    The earthworm castings are just like soil and can withstand any temperature. VermisTerra Tea is best stored between 40-90 degrees Fahrenheit, best not to let it freeze.

  • Is it okay to use Vermisterra on seeds and seedlings?

    The earthworm castings are a perfect pH for all plants at any age. The earthworm castings contain humic acid and natural growth hormones that help with fertility, seed germination, and can reduce transplant stress. Many nurseries add our earthworm castings into the planting hole to help protect the roots and increase survival rates.

    VermisTerra tea should not be used on seeds. You can condition the soil with the tea, and plant the seeds in after a week. Feed VermisTerra tea after seeds have germinated and grown their first leaf. Start with a lower ratio for young seedlings (about half the normal rate).

  • Are VermisTerra products organic?

    Our earthworm castings and earthworm casting tea have been inspected and approved by Organic Certifiers for use on certified organic crops under the USDA National Organic Program.  You are ensured that our fertilizers meet the quality standards of being safe and non-toxic. VermisTerra is licensed and registered with the CDFA.

  • Can I use VermisTerra on indoor plants?

    VermisTerra is great for indoor plants since our castings have no odor and do not attract pests. Sprinkle earthworm castings into potted plants or into the water of water plants. Water using VermisTerra Tea diluted to 1-2 oz/Gallon.

  • Do you grind your earthworm castings?

    VermisTerra worm castings are very fine because we go thru several processes included aging the castings from seven to ten years.

  • Is VermisTerra Tea earthworm bin juice or leachate (run off)?

    No, VermisTerra Tea is not just run off from worm beds. Leachate can contain phytotoxins (toxins that can harm plants and humans). Some of these toxins are created by bacteria. Every earthworm bin has good and bad microbes. Some leachate can contain harmful pathogens because it has not been processed through the earthworm’s intestinal tract. It should not be used on edible garden plants. VermisTerra Tea is lab tested and contains no pathogens (E. coli or Salmonella), and no heavy metals. VermisTerra Tea is safe to use on your organic herb, fruit and vegetable garden.

  • What is the difference between Vermisterra Standard vs Premium earthworm castings?

    Our Standard earthworm castings are fine with small slivers of organic material ideal for farms and outdoor gardens. VermisTerra Premium earthworm castings are super fine and more efficient, created for seed starting, indoor plants and greenhouses.

  • How long can I store unused VermisTerra Tea?

    Vermisterra Tea is best used within one year.

  • Once the VermisTerra Tea is mixed with water, how long can I keep it?

    The VermisTerra Tea concentrate contains dormant microbes. Keep the bottle closed and free from foreign organic materials getting into the solution, including water droplets.  Once you add water, the microbes wake up and begin to multiply. Do not store the mixture. Feed into the soil within 24 hours.

  • How much water should I use when diluting the VermisTerra tea?

    VermisTerra nutrient tea is a concentrate and should be diluted before using.  We suggest mixing 3 oz of VermisTerra tea to 1 gallon of water. Depending on what type of plants you are feeding you can use more or less. Since VermisTerra tea is organic and natural, you can apply it during growing and blooming seasons without hurting the plant. Once you mix VermisTerra tea with water, feed to plants within 24 hours (do not store). View and download the Usage Guideline Here.

  • Will VermisTerra Tea compete with any other fertilizers, soil amendments, pesticides that I’m currently using?

    VermisTerra tea is not a chemical, it is biological life so it is compatible with other nutrients and some farmers report that it enhances the effectiveness of pesticides.

  • How long will it take to notice effectiveness?

    You should see increased foliar growth, deeper color of green in leaves, more fruit and enhances tastes. VermisTerra products condition your soil so this process takes time. The key is consistently adding tea. A little goes a long way. Some farmers see perkier plants in a couple of days, while most see results within 6-12 months of use.

  • How is VermisTerra Tea different from conventional compost tea?

    The major difference in the VermisTerra Tea is the stability of the microbes within.  VermisTerra Tea has a shelf life of a year or more, instead of only 24-48 hours.  Due to this, there are no issues with pathogens from the tea.