





From the brand



About Us
UNCO Industries has been in worm farming for over 45 years, beginning as a small redworm bait operation in an old dairy barn. As demand grew, the company expanded and invested in controlled, scalable production. In 1983 it established a climate-controlled facility, and in 2011 moved to a much larger site in Union Grove, Wisconsin to support continued growth.
Why are Wiggle Worm castings better than the rest?
Our unique process delivers pure earthworm castings free of impurities like undigested bedding, stones, straw, and worm eggs. Our multi-screening process removes eggs without heat or sterilization, preserving beneficial bacteria and microbes.
What are the earthworms fed?
An organic material containing a wide variety of minerals and trace elements
Does this product provide long-term nutrition for plants?
Yes, in addition to readily available nutrients, it contains nutrients that release slowly, supporting plant growth for weeks or even months.


For Organic Gardening
Our Pure Worm Castings are OMRI listed organic, nutrient-rich, and mineral-dense pure castings, not vermicompost or uneaten worm bedding, and is one of the only castings products to be recognized as a fertilizer due to our special manufacturing and harvesting process.
More from Wiggle Worm!
100% Pure Castings: Each bag of WIGGLE WORM Worm Castings is OMRI listed organic, nutrient-rich, and mineral-dense pure castings, not vermicompost or uneaten worm bedding, and is one of the only castings products to be recognized as a fertilizer due to our special manufacturing and harvesting process.
Improves Soil Structure: WIGGLE WORM Pure Worm Castings are tiny, football-shaped particles which help improve soil aeration, while also creating proper drainage in both loose and dense soils for optimal water retention.
High Quality Fertilizer: Pure Worm Castings add nutrients and boost microorganisms in the soil around your plant to grow better, healthier roots for fuller, healthier, and more fruitful plants.
Easy-to-Use: Apply our worm castings into your garden soil above the root zone three times a year or to the hole during transplant or seeding for best effects – a handful, or half a cup is all you need!
Long-lasting and Convenient Garden Solution: Pure Worm Castings fertilizer goes further than most standard fertilizers as you only need to use a small amount for great results, and is suitable for both indoor and outdoor use as it’s odorless and non-toxic.
8 reviews for Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer, 30lbs – Improves Soil Fertility and Aeration for Growing Better Houseplants, Vegetables, and More
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