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100% Pure Organic Worm Castings - Organic Fertilizer for Houseplants, Vegetables, and More, 4.5-Pounds

  • Based on 7,676 reviews
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Availability: In Stock.
Fulfilled by Esbenshades Garden Center

Arrives Sunday, Nov 9
Order within 23 hours and 48 minutes
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Size: 1 pack


Features

  • Pure Earthworm Castings WIGGLE WORM Worm Castings is pure castings, not vermicompost, and is one of the only castings products to be recognized as a fertilizer. This is because of our special manufacturing and harvesting process. Its not uneaten worm bedding with some worm castings, so its pure, nutrient-rich, and mineral-dense
  • Improves Soil Structure WIGGLE WORM Pure Worm Castings contain tiny, football-shaped particles to help improve plant soil aeration. Our soil supplement also helps improve the roots water retention capacity
  • Indoor and Outdoor Use WIGGLE WORM Pure Worm Castings are great for both outdoor and indoor gardens because its odorless and non-toxic. Our worm castings are an excellent organic fertilizer for vegetables, flowers, houseplants, and more
  • Easy-to-Use A little goes a long way with WIGGLE WORM, so a handful or half a cup is all you need. Apply our worm castings for gardening into the soil above the root zone three times a year or to the hole during transplant or seeding
  • OMRI listed for organic use - The simple fact is that Earthworm Castings were created by nature for the purpose of promoting optimum plant growth and everything required to provide it, is found in them

Brand: Wiggle Worm


Item Weight: 4.5 Pounds


Item Form: Granules


Liquid Volume: 260 Cubic Inches


Specific Uses For Product: Houseplants, Vegetables, Flowers, Gardens


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 10 x 7 x 2.5 inches; 4.5 Pounds


Item model number ‏ : ‎ 602


Date First Available ‏ : ‎ November 8, 2007


Manufacturer ‏ : ‎ Wiggle Worm


Best Sellers Rank: #13,867 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #391 in Garden Fertilizers


#391 in Garden Fertilizers:


Customer Reviews: 4.7 4.7 out of 5 stars 7,676 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Who Knew WORM Poop Could Be So Magical?
Size: 1 pack
I recently started using Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, and let me tell you, this stuff is pure magic. Who knew that worm poop could make plants so happy? Certainly not me! The worms must have had a secret meeting to discuss how to make my plants thrive, because after using this, my garden is practically doing a happy dance. My plants are growing faster than my ability to keep up with the weeding! If you’re skeptical about using worm castings, don’t be. This fertilizer is like a VIP pass to Plant Paradise. It’s the best kept secret in gardening – and it’s all thanks to some very industrious worms. Highly recommended if you want your plants to experience a growth spurt that even your green thumb will envy! ... show more
Reviewed in the United States on September 4, 2024 by Christy s.

  • Great!
Size: 1 pack
These worm castings have brought my indoor citrus to life. With in two weeks I see a major improvement with the quality of leaves and I can see the trunk has grown. I am so happy with this product. The worm castings have also been beneficial to our peace lily and snake plant. I highly recommend.
Reviewed in the United States on January 5, 2024 by jp

  • Recommend
Size: 1 pack
Worked great in my garden.
Reviewed in the United States on October 1, 2025 by Amazon Customer

  • Wiggly Wonder: 4.5 Pounds of Nutrient-Rich Gold for Your Garden!
Size: 1 pack
Give your plants the nutrient boost they deserve with UNCO INDUSTRIES Worm Castings, a 4.5-pound bag of rich, organic goodness that promises to supercharge your garden's growth! This all-natural, eco-friendly soil amendment is derived from the finest wiggly workers – worms! Let's delve into the wondrous world of worm castings and unearth their benefits. Pros: Nutrient powerhouse: Worm castings are packed with essential nutrients, minerals, and beneficial microbes, ensuring your plants receive the best possible nourishment. All-natural goodness: These worm castings are 100% organic, providing a chemical-free and eco-friendly alternative to synthetic fertilizers. Versatile vitality: Suitable for use with a wide variety of plants, including fruits, vegetables, flowers, and ornamentals, these castings enhance the overall health and growth of your garden. Soil savior: Worm castings not only feed your plants but also improve the structure and water retention of your soil, promoting healthier root development and growth. Easy application: The 4.5-pound bag makes it simple to mix the castings into your soil or use them as a top dressing, ensuring your plants reap the full benefits. Cons: Weighty expectations: Some users may find the 4.5-pound bag to be a little on the small side for larger gardens or more extensive applications. However, the nutrient-rich content of these castings ensures a little goes a long way. In conclusion, UNCO INDUSTRIES Worm Castings offer 4.5 pounds of nutrient-rich gold for your garden, providing an all-natural, eco-friendly solution to supercharge your plants' growth. With their versatile vitality and soil-improving properties, these wiggly wonders are an essential addition to any gardener's arsenal. Give your plants the royal treatment with this wondrous worm casting experience! ... show more
Reviewed in the United States on March 17, 2023 by Mike S.

  • potting soil
Size: 1 pack
this is a very good product
Reviewed in the United States on May 9, 2025 by Gloria Castrejon

  • excellent for indoor cannabis
Size: 1 pack
Been using for 7 days started late with my cannabis plant so I poured 4 (1/4 cups) on top of 7 gallon soil and watered. Only one plant, during my last measuring the height of plant grew by over 1" in one day. That was yesterday. It's going to be fun seeing if the growth is sustained until harvest. I don't expect to see continued fast growth, this event seems very unusual. I'll add more same amount in 4 weeks before flowering. I was afraid maybe I over dosed the 7 gallon growing container thinking maybe the plant will burn. No burning except I now have to raise my 480 watt LED light a few inches to insure leaves don't burn on the tips. I recommend this product to other cannabis growers. No bugs at all due to correct watering methods. I am disabled and limited physically and still I can grow. Buy this stuff, but not all of it so I can reorder in the future. I also used Roots dry nutrients that were 4 years old and still the plant has shown full growth. Roots dry nutrients if over used seems to not burn the plant either. Rising Foundation,Uprising Foundation and eventually Uprising Bloom mixed into 1 gallon RO water. Amazon carries the Roots dry nutrient line of supplements. It's expensive but so worth it. I am not a sales person just an old man growing some medicine. I grow organically. Best of luck to you growers. ... show more
Reviewed in the United States on March 19, 2024 by David

  • PLANT STEROIDS!!!
Size: 1 pack
This is my first year gardening. After thorough research, many sources recommended worm castings to increase the growth of bacteria, fungi & other beneficial microbes in the soil for plants. I purchased this product because of the many good reviews. I like to make worm tea using ~ 5 gallons of dechlorinated hose water or rainwater (most municipal water is treated with chlorine/chloramine to kill bacteria/mold - which would defeat the purpose of the beneficial microbes in worm castings. If using tap water, let it sit outside for 24 hours to let the chlorine/chloramine evaporate before making the tea. Or boil the water for 20mins to speed up the process but let it cool first) and 1/4 cup of the castings. Let the tea steep for at most 24 hours, mixing it throughout the day to aerate. Water with the tea until you see the liquid pooling on the top of the soil or use your own judgement. Idk. I prefer making worm tea because it is absorbed more rapidly. So far I’ve used the worm tea twice on a weekly basis and I’m not sure if there’s a direct correlation yet, but every time I’ve used the tea there was IMMEDIATE results. My carrots which are notorious for being difficult to germinate, went from having two/three weak looking sprouts to maybe a dozen+ healthy, green sprouts. My eggplants that were taking a while to sprout, sprouted immediately the next day. The same goes for the arugula. The potato greens FLOURISHED overnight. I can go on and on about the immediate growth I’ve witnessed on all my plants after using worm tea but you get the point. Like I said, I’ve only used the worm tea twice so far and on a weekly basis so I can’t vouch for its complete efficacy just yet but I am SOLD! This stuff does wonders. HIGHLY RECOMMEND! ... show more
Reviewed in the United States on May 23, 2020 by Allen L.

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