---
title: "Worm Castings 30 Lb — $19K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/worm-castings-30-lb"
last_updated: "2026-07-21T20:53:39.506Z"
locale: en
meta:
description: "Niche score 43/100 · $19K/yr market · 6K searches/yr · $50.63 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · $19K/yr market · 6K searches/yr · $50.63 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Worm Castings 30 Lb — $19K/yr Amazon US Niche (2026) - Flapen"
---
# **worm castings 30 lb**
**Skip it**
A small market ($19K/yr) — this niche doesn't clear our bar today.
Market size 5Growth 43Conversion 66Competition 25Returns 100Price range 69Avg price 93Brand share 9Review moat 36Quality gap 50
**Returns**
**Incredible****0.0%**
return rate — above 6% kills the launch gate
**Avg price**
**Great****$50.63**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$24.11–$133.55**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.9%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+14.5%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****2,883.53**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****70%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$19K**
$19K/yr · 6K searches
According to Flapen's Amazon United States niche tracking, worm castings 30 lb is a $19K/yr Amazon United States market (6K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Mar–Apr–May. Verdict: Skip it — 43/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **worm castings 30 lb market data**
- **Units sold / yr**
- **250–500**
- avg 0–100/product
- **Revenue / yr**
- **$13K–$25K**
- units × avg price
- **Launch success**
- **—**
- 0 of 1 new (360d)
- **Conversion rate**
- **5.9%**
- **Avg BSR**
- **#803**
- **Page quality**
- **0%**
- **Prime**
- **13%**
- **Sponsored**
- **87%**
- **Out of stock**
- **7.7%**
- **Avg brand age**
- **77 months**
- **Avg seller age**
- **193 days**
## **Competition & brand share**
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▲rising
**Sellers**
**14**
**Top-5 brand share**
**96%**
Top 20: 98%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**2%**
- Wiggle Worm68% - BRUT WORM FARMS13% - NatureGrow7% - plantonix6% - Uncle Jim's Worm Farm3% - --2% - Open — no brand owns it (2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +14.5% search growth over the last 90 days.
400300Spike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, May · busiest ÷ quietest = 4.1×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/worm-castings-30-lb/trend)
## **Top worm castings 30 lb search terms**
- **worm castings 50 lb**5K/yr+6.9%5.4% conv. - **worm castings 30 lb**1K/yr+51.6%6.6% conv. - **50 lbs worm castings**89/yr+156.3%4.9% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/worm-castings-30-lb/search-terms)
## **Top worm castings 30 lb products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$2K20%$4K30%$6K40%$8K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Wiggle Worm 100% Pure Worm Castings Plus Worm Egg Material 40lbs - Fertilizer and Soil Amendment for Indoor and Outdoor Gardening to Improve Soil Fertility and Aeration - 100% Organic and Odor Free**Wiggle Worm**$41.54**4.6★984 rev](https://www.amazon.com/dp/B0BYJYCSM2) [2**Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer 30lbs - Improves Soil Fertility and Aeration for Growing Better Houseplants Vegetables and More**Wiggle Worm**$34.24**4.8★1,817 rev](https://www.amazon.com/dp/B0CV5ZZJF1) [3**Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer 30lbs Pack of 2 - Improves Soil Fertility and Aeration for Growing Better Houseplants Vegetables and More**Wiggle Worm**$67.40**4.8★5,474 rev](https://www.amazon.com/dp/B08K986D5G) [4**Wiggle Worm Raised Bed Mix 40lbs - Organic Soil and Fertilizer for Container Gardening - Worm Egg Material Mixed with Odor Free Pure Worm Castings**Wiggle Worm**$34.16**4.2★316 rev](https://www.amazon.com/dp/B0BYK89D48) [5**Worm Bliss (8 Qts) - Organic Worm Castings for Plants & Gardening - OMRI-Listed Earthworm Castings for Plants Vegetables Flowers & Potting Soil - Organic Garden Fertilizer Rich in Nutrients**plantonix**$24.79**4.8★221 rev](https://www.amazon.com/dp/B0C7SHMSFL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Supply Solutions | Wonder Worm Castings Earthworm Castings for Plants & Vermicompost Soil Amendment for Garden Fertilizers Helps Support Soil Texture and Nutrient Availability (40 Pounds)**Supply Solutions**$45.07**1 rev5mo ago](https://www.amazon.com/dp/B0GNKFY1RX) [**Wiggle Worm 100% Pure Worm Castings Plus Worm Egg Material 40lbs - Fertilizer and Soil Amendment for Indoor and Outdoor Gardening to Improve Soil Fertility and Aeration - 100% Organic and Odor Free**Wiggle Worm**$41.54**984 rev3y ago](https://www.amazon.com/dp/B0BYJYCSM2) [**Wiggle Worm Raised Bed Mix 40lbs - Organic Soil and Fertilizer for Container Gardening - Worm Egg Material Mixed with Odor Free Pure Worm Castings**Wiggle Worm**$34.16**316 rev3y ago](https://www.amazon.com/dp/B0BYK89D48) [**NatureGrow Earth Worm Castings 30LB (15LB 2 Bags) - Organic Fertilizer Includes Humic Acid - Pure Worm Castings for Gardening**NatureGrow**$31.86**1,497 rev3y ago](https://www.amazon.com/dp/B0C4MK9JX9) [**NatureGrow Earth Worm Castings 40LB - Organic Fertilizer Includes Humic Acid - Pure Worm Castings for Gardening**NatureGrow**$37.95**1,497 rev3y ago](https://www.amazon.com/dp/B0CN8CCZ4Z)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Supply Solutions | Wonder Worm Castings Earthworm Castings for Plants & Vermicompost Soil Amendment for Garden Fertilizers Helps Support Soil Texture and Nutrient Availability (40 Pounds)**Supply Solutions**$45.07**1.0★**▲ 138%**](https://www.amazon.com/dp/B0GNKFY1RX) [**Brut Organic Worm Castings for Plants 12 LB Natural Nutrients Fertility Builder Plant Food for Potting Soil and Garden Soil Indoor and Outdoor Use**BRUT WORM FARMS**$24.11**4.8★**▲ 79%**](https://www.amazon.com/dp/B08SG88JBR) [**NatureGrow Earth Worm Castings 40LB - Organic Fertilizer Includes Humic Acid - Pure Worm Castings for Gardening**NatureGrow**$37.95**4.7★**▲ 66%**](https://www.amazon.com/dp/B0CN8CCZ4Z) [**Brut Organic Worm Castings for Plants 30 LB Natural Nutrients Fertility Builder Plant Food for Potting Soil and Garden Soil Indoor and Outdoor Use - 4 Pack**BRUT WORM FARMS**$133.33**4.6★**▲ 57%**](https://www.amazon.com/dp/B099LGXDW4) [**Uncle Jims Worm Farm 1000 Count Red Wiggler Composting Worms Mix for Garden Soil or Fishing | Pack of Compost Worms Improves Soil Structure and Quality for Healthier Gardens**Uncle Jim's Worm Farm**$56.73**4.5★**▲ 44%**](https://www.amazon.com/dp/B000Q5S7RM)
**~~View all trending →~~**
## **What buyers say about worm castings 30 lb**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Plant Growth**32%
*“Great product for growing”*
**Quality-Overall**30%
*“Excellent Product”*
**Value For Money**13%
*“Great value”*
**Advertised Vs Actual Product**5%
*“Great product was as advertised”*
**Instructions/User Manual/Troubleshooting**3%
*“Arrived with instructions”*
**Ease Of Use**2%
*“Easy to use”*
**Suitable For Indoor**2%
*“Great for the garden”*
**Size-Overall**1%
*“the bag is big love that”*
**Smell**1%
*“Doesnt smell bad”*
**Pest/Insect Control**1%
*“does make a difference with plants add I have found it keeps away white flies”*
### **What buyers complain about **
**Value For Money**13%
*“But, can't believe the price of what you get”*
**Quality-Overall**13%
*“Poor quality control, apparently”*
**Size-Overall**11%
*“Wrong sizes listed”*
**Plant Growth**5%
*“having to take on an extra step to remove them before potting up plants is something Im very much not looking forward to”*
**Ease Of Cleaning**5%
*“It was a huge mess to clean up”*
**Wood Quality**5%
*“Has rocks and wood chippings”*
**Color**5%
*“It should be black as in years past”*
**Functionality-Overall**4%
*“bers does not work”*
**Smell**4%
*“not as smelly as other ones”*
**Moist/Dry**4%
*“Worse ever dry & crumbly”*
### **Top return reasons **
**Leak-Proof**15%
**Value For Money**13%
**Size-Overall**13%
**Smell**13%
**Advertised Vs Actual Product**12%
**Contamination**8%
**Defective Material/Parts**6%
**Moist/Dry**5%
**Functionality-Overall**3%
**Plant Growth**3%
## **Common questions**
- **Is worm castings 30 lb profitable to sell on Amazon United States?**
- The niche generates $19K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +14.5%. Flapen's verdict: Skip it (43/100).
- **How competitive is the worm castings 30 lb niche?**
- 6 brands and 14 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in worm castings 30 lb?**
- Top complaints mined from reviews: Value For Money, Quality-Overall, Size-Overall. The return rate is 0.0%.
- **When does demand for worm castings 30 lb peak?**
- Demand peaks in Mar–Apr–May; the busiest month runs 4.1× the quietest.
- **What does it cost to enter the worm castings 30 lb niche?**
- Listings span $24.11–$133.55; the average listing price is $50.63 (sweet spot $15–$100). The average incumbent carries 2,884 reviews — the moat a new listing must climb.
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