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🪱 Feed your soil, fuel your growth — the organic secret pros swear by!
Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer is a 15lb bag of OMRI-listed, nutrient-packed worm castings designed to improve soil fertility, aeration, and drainage. Its unique manufacturing process ensures pure castings that boost soil microorganisms, promoting healthier roots and more productive plants. Suitable for both indoor and outdoor use, this odorless, non-toxic fertilizer requires only small amounts for lasting garden vitality.










| ASIN | B00062KQ42 |
| Best Sellers Rank | #7,033 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #265 in Garden Fertilizers |
| Coverage | Half |
| Customer Reviews | 4.8 out of 5 stars 5,476 Reviews |
| Global Trade Identification Number | 00090147135987 |
| Included Components | 1 bag |
| Item Form | Pure earthworm castings |
| Item Type Name | Wiggle Worm Soil Builder |
| Item Weight | 15 Pounds |
| Liquid Volume | 0.5 Cubic Feet |
| Manufacturer | Wiggle Worm |
| Mixing Ratio | 1:0:0 |
| Model Number | 603 |
| Number of Items | 1 |
| Part Number | WWSB15LB |
| Specific Uses For Product | Fertilizer and Soil Amendment |
| Target Species | Plants |
| UPC | 090417135983 827165731125 674788542276 704907528611 650715805003 090147135987 355111056867 |
| Unit Count | 240.0 Ounce |
T**O
⭐️⭐️⭐️⭐️⭐️ Black Gold for My Garden. My Plants Eat This Up
Wiggle Worm Organic Worm Castings is what I call garden magic in a bag. Fifteen pounds of pure, crumbly, mineral-rich goodness and my plants act like they’ve just been served a gourmet meal. I mix it into potting soil, tuck a little around roots, and everybody perks up. Mid-season, I top dress with more. Tomatoes stand taller. Peppers look bolder. My houseplants wake up like they’ve had a good night’s sleep and a strong cup of coffee. It improves the soil without overpowering it and it's light, airy, and earthy, not heavy or muddy. No harsh smell or drama. Just happy roots doing their best work underground. I love that it’s OMRI-listed and truly organic which means real worm-made goodness, not pretend “eco-friendly” marketing fluff. It plays well with my fertilizers and keeps the soil alive instead of tired. This stuff is gentle, reliable, and honestly feels like I’m treating my plants with respect.
G**I
Miracle fertilizer
I’ve never used worm castings before but I was pleasantly surprised there was no odor. It is rich and free of sticks and decomposed leaves. I added it to my raised garden and wow the seeds just took off!! So impressed, I’ve ordered another bag!
J**.
Best stuff I found so far works good
Hey let’s just say u need this if u grow organically
S**A
Great product
There isn’t a year that goes by where I don’t order this product.
C**L
Worked well in my raised garden beds
Aerates and enriches the soil
M**G
Good stuff
Plants are thriving
N**E
Organic pest control!
I read about the value of adding worm castings to minimize damage from pests. I'm amazed! Not one of my roses had aphids on it this year. I mixed it in with the soil I use for my lettuces, and then did a small lettuce container without it. The small lettuce container was filled to the brim with whitefly, but the crop with this product was virtually pest-free. While worm castings are rich in nitrogen, I would never use them as a single source of nitrogen. Will it add organic material and micronutrients to your soil? Yes! That's always a good thing. But it shouldn't be your single source of fertilizer. I like to work this into the soil as best as I can and then top with a layer of mulch. For containers, I just mix it in well with the potting mix. You want this to get to the roots of your plants so they'll absorb the chemical that kills insects. I'm interested to see if this will help with fungus gnats since I always seem to be cursed with a fresh bag of potting mix that contains nothing but gnats... The price is expensive, but it beats buying and spraying pesticides, no matter how organic they may be. I'm an inherently lazy gardener so something I can just add to the soil that will keep large infestations at bay is worth the price. I bought two 30-lbs bags this year for our very old orange tree so we'll see if it helps with that as well.
S**R
Castings are Interesting Stuff
Honestly I had never heard of this before this summer. Upon reading what this stuff can do, I had to try it. It seems like a lot of money to pay for what looks like a bag of black dirt - but it's really worm poo. The articles I read had many great claims for this stuff and the good thing about it is that you can put it right on top of the dirt around your plant if you've already planted a seed or plant from a nursery. If you haven't planted anything yet - then you can mix it in the soil before planting. It's supposed to help if you have molds or bugs or most any problem that is causing your plant to wilt or get brown leaves. This is why I bought it because some of my tomatoes weren't doing that well. I felt like the soil in my garden wasn't a very good quality. When the bag of castings arrived I realized that I probably would need much more of it considering the size of my garden. That would have been too costly. So I just used some on the plants that seemed to be having issues. Honestly I don't know whether it helped or not. I had a few tomatoes - but nothing like I had wanted. My squash plants did great and so did my pole beans. I like the idea of the castings and want to learn more about it. I'm not going to say that they are no good. I just wish it didn't cost so much. However, I guess like anything else it depends on how much work it took to create. Gathering up worm poo probably takes a while. So that's most likely why it costs a lot. I get that. I am going to buy it again. I still have some left to use on my indoor plants - who I think will benefit more from it anyway.
M**E
Top product
Very nice worm casting, fine screened with little clumps. The plants does adore it , loaded with good nitrogen and more. i would recommend .
C**Y
It works well
I disliked how it said it didn't have a sent but I like how the plants liked it
Trustpilot
5 days ago
3 weeks ago