Photo of gardener planting seedling with dirty bil's pure worm castings

Change The Way You Fertilize

Your Plants Will Thank You For Choosing Dirty Bil’s Worm Castings

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Why Choose Dirty Bil’s Pure Worm Castings?

At Dirty Bil’s, we understand that the quality of castings depends greatly on the peat moss provided to the worms. That’s why we have established exclusive partnerships with trusted peat providers. By ensuring our worms receive top-notch peat, we maintain their well-being and happiness. The outcome? You get access to premium plant food that yields exceptional results.

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Hand holding a bag of Dirty Bil's Pure Worm Castings, showcasing the high-quality and organic nature of our product.

Made In
The USA

1-0-0 NPK
Soil Analysis

Feeds Most
Plant Species

Our Worm Castings Are Now Available In Three Sizes!

Image of Dirty Bil's owner Derek Bilski and his parents video preview.

A Family Owned Business

Discover the heartwarming story behind Dirty Bil’s, a cherished family-owned and operated business. Dive deeper into our company’s journey by watching our wholeseome video of Derek Bilski (CEO/Owner) and his family or simply click the link to explore further!

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Two out of every five people on Earth today owe their lives to the higher crop outputs that fertilizer has made possible. – Bill Gates

Where Can I Find Dirty Bil’s Worm Castings?

At Dirty Bil’s, we’re committed to bringing our premium plant food closer to you. Discover our expanding network of new locations every week, in partnership with trusted retail partners. If online ordering doesn’t suit your preference, use our convenient store locator to find the nearest store and get your hands on a bag of our high-quality fertilizer today!

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Google Map displaying locations where Dirty Bil's Pure Worm Castings are sold, marked with green pins featuring shopping baskets.

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