Uncle Jim’s Worm Castings – Free Shipping*


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Uncle Jim’s Worm Farm presents EarthWorm Castings

Worm castings pile

“Black Gold”

  • Comes straight from the same bins that our worms are raised in.
  • VERY nutritious for plant growth and garden soil 
  • 100% natural and organic fertilizer (means no chemicals added!)

Manufactured by the Worlds #1 Champion Composters – Uncle Jim’s Red Worms!

Designed for folks who don’t want the hassle of homemade worm castings but need the essential nutrients from pure worm castings to improve soil structure. These pure organic worm castings folks!

These are excellent for:

  • Gardens
  • Lawns
  • Seedlings
  • Houseplants

100% made by our Red Worms. Buy a bag it’s worth it!!!

What are Earthworm castings good for?

As the worms in your bin consume their body weight in food waste, tea bags, and other organic material, waste (worm poo) is produced and released inside the worm bin. Even if you are new to vermicomposting, you will undoubtedly be aware of the numerous benefits associated with these organic materials.

Improves Soil Structure, Aeration, and Plant Health

We harvest worm castings for our customers to mix into the soil, whether directly on the ground or in potted plants, to promote the best soil structure and aeration.

Worm casting bacteria is ideal for plant growth because it contains beneficial microbes that protect plants from disease while also promoting nitrogen, which helps plants thrive.

Does not Introduce Chemicals into the Soil 

One of the most beneficial aspect of earthworm castings is that it is an all natural option. While it is true that some chemical fertilizers speed up certain processes, we don’t know the extent of affects have in the long run, especially when it comes to growing food humans consume. 

The high levels of nutrients and trace elements in worm castings make them like a multivitamin for your soil. They have all the benefits of commercial fertilizers and even more, but are 100% natural.

Frequently Asked Questions 

Can you use too much worm castings?

Fertilizer burn is what happens when a high concentration of fertilizer salts draw moisture from the root system which dries them out and causes plants to wilt and die. 

When you opt to use worm castings, you will not have that issue since there are no chemicals. You can use as much as you have but do remember that a little goes a long way to aid in plant growth. 

What is better for plant growth; ordinary compost or worm castings?

Both compost and worm castings are natural ways to improve soil structure. Both are made from things like leaves, grass clippings, and organic food waste. The main difference between them is that worms eat these parts and break them down for us. This makes the plants and soil get the nutrients faster.worms are champion composters

“Black Gold” comes directly out of our worm beds located at the Uncle Jim’s Worm Farm.

*Because Uncle Jim’s is a commercial grower of Red Worms, the worm compost we sell you comes directly from our growing pits. Please be aware that you may receive small twigs, grains, a small critter, or even a worm egg! But don’t worry: it’s the best, it’s authentic, and you’ll adore it! Not sure if you need worm tea and castings in your garden? Read our blog post about the benefits of worm castings

Our worm castings are 100% made by our Red Worms. Buy a bag it’s worth it!!!

Additional information


4 Pound Bag of Gold, 10 Pound Bag of Gold, 20 Pound Bag of Gold


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Joseph M.


Black gold .................

Don B.

Black gold

My experience with Uncle Jim's was great. The compost was very rich, the worms were alive, the moisture in the soil was outstanding. I was truly surprised at the quality. Great job yall.


Superior product

Best worm compost on market. Free shipping makes it economical to purchase..

Diane C.

It may be too early to tell if about my experience but it looks great.


Best Out There!!!!!!!!!!!!!!!!!

Excellent for worm casting Tea

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