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Slider Worms

Premium Red Worm Castings

bio-diverse soil supplement


Build Organic, Nutrient Rich Soil

return minerals and microbes to build soil volume and quality

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Save Water

Use 50-70% less water and retain moisture longer



organic, safe, and non-toxic for children, pets, environment, and pollinators

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Maximize Plant Growth, Yield, & Health

15-57% increased yield, earlier crops, superior quality, multiple harvests,

and improved immunity to disease and drought

Why Use Worm Castings?

  • Nature’s Soil Supplement

    Pure dried organic practices worm castings from bio-diverse, sustainable, all organic materials with more humus than top soil, to rebuild degraded soil

  • Easily Absorbed Minerals

    Adds easily absorbed N P K (nitrogen, phosphorus, and potassium) and other vital minerals immediately available to the roots of plants that is not flushed away with water, giving plants more time to absorb its nourishment

  • Build Soil & Feed Plants

    Encourages vigorous plant growth through cycled applications, which increases soil biology, adds microbial diversity, activity, and balance, providing more root/plant food and growth

  • Slow Nutrient Release

    Nutrients and phototropic bacteria (nitrogen fixation), yeast, lactic acid bacteria, actinomycetes and fermenting fungi are held in place longer, without burning plants, and are released more slowly, providing more prolonged nutritional availability to roots

  • Accelerated Plant Growth

    Worm secreted hormones in castings accelerate plant growth for bigger stalk, leaf, fruit, and bloom that appears earlier in the season and produces multiple harvests

  • Healthier Plants

    Reduces transplant shock, allows plants to develop their own immunity, encourages vigorous growth while increasing health and reducing need for fertilizer, water, pesticides and fungicides

  • Water Saving

    Worm castings are a colloid and hold up to 9 times their weight in water, held in the worm secreted mucous deposited in soil supplements, making plants up to 30% more drought resistant

  • Non-Toxic and Safe

    No petro-chemicals or other harmful substances, no nitrogen run-off to contaminate ground water, may be applied to phosphate sensitive areas, SAFE around children and pets.

  • Micro-Organism Rich

    Outstanding community of beneficial micro-organisms in large amounts to help plants develop better roots, immunity, pest & weed resistance, and prevent fungal diseases, with dark brown aerobic activity: APPLY once per growing season


For Professional Growers


For Home Gardeners

Retail Sellers

For Retail Sellers

Meet Our Soil Experts

rick knoll

Rick Knoll PhD

Chemist, Organic Farmer, Soil Consultant

View Rick’s Video

elaine ingham

Elaine Ingham PhD

Mentor, Motivator, Educator

View Elaine’s Bio

jacob hatch

Jacob Hatch

Eco-Scientist, Aquaculture Consultant

View Jacob’s Video

What Others Are Saying

Worm castings have greater NPK values and up to 15 times more calcium than top soils

Cornell University

Worm castings have several times higher nitrogen, phosphors, potassium, and magnesium, and have demonstrated that the use of them will significantly increase the growth of plants

USDA Natural Resources Conservation Service

Worm Castings provide the finest humus available. They are rich in water-soluble plant nutrients, unlike animal manure and artificial fertilizers, Worm Castings nutrients are absorbed easily and immediately by plants.

Organic Magazine2010

In The News

The Soil Will Save Us: A Manifesto For Restoring Our Relationship With The Land

Kristin Ohlson, author of The Soil Will Save Us, thinks like a growing number of scientists, farmers, and good food advocates, who believe that in order to fix the problems in the sky, we need to put our eyes and ears to the ground.

Introduction to Gardening with Nature

Many people are demanding organic, based on political, nutritional, and environmental reasons. Implicit in the reason to return to natural production methods is the fact that beneficial organisms are killed by the use of toxic chemicals.

Repairing Dog Spots for a Beautiful Lawn

Whether your dog is your child, or you got a dog because of your child, or fall somewhere in the middle, your lawn is probably looking less pretty since you got Fido.