Worm Castings
Worm Castings clears our launch bar: a $2.0M/yr market growing +8.3% this quarter with returns at 0.2%.
Flapen Score
Top 25% of 8,839 Patio, Lawn & Garden niches · +6 vs the category median of 56
Is Worm Castings profitable on Amazon?
According to Flapen's Amazon United States niche tracking, Worm Castings is a $2.0M/yr Amazon United States market (959K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Mar–Apr–May. Verdict: Launch it — 62/100.
Worm Castings: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Yes. Search demand moved +8.3% over the last 90 days and 9.2% of searches end in a purchase.
$2.0M
revenue / yr
Who owns the niche?
The top 5 brands hold 83% of demand, so 17% of the market is open.
17%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.
0/100
page quality · 27 products
Top Worm Castings products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Brut Organic Worm Castings for Plants 5 LB Natural Nutrients Fertility Builder Plant Food for Potting Soil and Garden Soil Indoor and Outdoor Use
- Price
- $15.44
- Rating
- 4.8/5
- Reviews
- 5,828
- Age
- 5y ago
Wiggle Worm 100% Pure Organic Mineral-Dense Worm Castings Fertilizer 30lbs - Improves Soil Fertility and Aeration for Growing Better Houseplants Vegetables and More
- Price
- $34.24
- Rating
- 4.8/5
- Reviews
- 1,817
- Age
- 6y ago
Back to the Roots Organic Worm Castings for Plants Natural Fertilizer and Soil Enhancer for Gardening Made in the USA 5lb
- Price
- $14.87
- Rating
- 4.8/5
- Reviews
- 906
- Age
- 2y ago
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
- Price
- $41.54
- Rating
- 4.6/5
- Reviews
- 984
- Age
- 3y ago
Brut Organic Worm Castings for Plants 12 LB Natural Nutrients Fertility Builder Plant Food for Potting Soil and Garden Soil Indoor and Outdoor Use
- Price
- $24.11
- Rating
- 4.8/5
- Reviews
- 5,828
- Age
- 5y ago
Trending
90-day click momentum
Earth Science Earthworm Castings Premium Plant Fertilizer for Indoor & Outdoor Plants Soil Enhancer for Vegetable Gardens 4lb
- Price
- $7.50
- Rating
- 4.8/5
- Reviews
- 173
- Age
- 5y ago
Arcadia Garden Products Worm Nerd Worm Castings Natural Soil Additive for Lawns Gardening and Potted Plants 3 Quarts Black (WN05) -Cannot Ship to Hawaii-
- Price
- $10.75
- Rating
- 4.7/5
- Reviews
- 261
- Age
- 4y ago
20 oz 100% Organic Worm Castings Natural Superfood for Plant Growth Root Development & Growing Healthier Stronger Crops Non Toxic & Kind to Soil Resealable Zip Pouch Life Cycle Organics
- Price
- $10.33
- Rating
- 4.8/5
- Reviews
- 55
- Age
- 3y ago
Earth Science RevitaSoil 4lb Up to 16 Sq. Ft. - Premium Organic Soil Revitalizer - Natural Nutrients & Earthworm Castings Grow Up to 3X More Indoor & Outdoor Plants Vegetables Flowers Gardens
- Price
- $23.72
- Rating
- 4.4/5
- Reviews
- 108
- Age
- 1y ago
Earth Science Earthworm Castings 3 lbPremium Plant Fertilizer for Indoor & Outdoor Plants Soil Enhancer for Vegetable Gardens
- Price
- $18.91
- Rating
- 4.9/5
- Reviews
- 185
- Age
- 3y ago
Newest
by launch date
Wrigglebrew Organic Liquid Fertilizer Concentrate from Worm Castings. Non-toxic All-Purpose Plant Food for Gardens Vegetables Fruits Houseplants Seed Starters and Ornamentals. (16 Fluid Ounces)
- Price
- $10.00
- Rating
- 4.2/5
- Reviews
- 174
- Age
- 12mo ago
Earth Science RevitaSoil 4lb Up to 16 Sq. Ft. - Premium Organic Soil Revitalizer - Natural Nutrients & Earthworm Castings Grow Up to 3X More Indoor & Outdoor Plants Vegetables Flowers Gardens
- Price
- $23.72
- Rating
- 4.4/5
- Reviews
- 108
- Age
- 1y ago
Worm Castings for Plants 1 QT (1.5lbs). Organic Soil Rebuilder and Plant Fertilizer.
- Price
- $11.62
- Rating
- 4.9/5
- Reviews
- 40
- Age
- 1y ago
Back to the Roots Organic Worm Castings for Plants Natural Fertilizer and Soil Enhancer for Gardening Made in the USA 5lb
- Price
- $14.87
- Rating
- 4.8/5
- Reviews
- 906
- Age
- 2y ago
20 oz 100% Organic Worm Castings Natural Superfood for Plant Growth Root Development & Growing Healthier Stronger Crops Non Toxic & Kind to Soil Resealable Zip Pouch Life Cycle Organics
- Price
- $10.33
- Rating
- 4.8/5
- Reviews
- 55
- Age
- 3y ago
Competition: brands, sellers & click share
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
Brands
14 rising
Sellers
35
Top-5 brand share
83%
Top 20: 97%
Top-5 click share
54%
Top 20: 92%
Open market
14%
- Wiggle Worm28%
- BRUT WORM FARMS27%
- plantonix13%
- Back to the Roots10%
- Earth Science5%
- --3%
- Open — no brand owns it (8 brands, 14%)
Worm Castings demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Mar, Apr, May · busiest ÷ quietest = 3.3×
Top Worm Castings search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- worm castings490K/yr
- worm castings for gardening82K/yr
- earthworm castings75K/yr
- worm castings for plants105K/yr
- humus de lombriz para plantas38K/yr
- worm casting36K/yr
- wiggle worm castings14K/yr
- worm castings organic fertilizer16K/yr
- organic worm castings15K/yr
- humus de lombriz13K/yr
What reviews say buyers love and hate about Worm Castings
What buyers mention most, as a share of all reviews.
What buyers love
91% of reviews“grow so very well”
“Amazing quality”
“Worth it”
“As advertised”
“It's odor free”
What buyers complain about
74% of reviews“Poor quality control, apparently”
“Not an incredible value”
“My vegetables last year grew crazy”
“bag is small”
“The smell is a bit strong”
Worm Castings return rate & reasons
Why buyers send it back, as a share of all return requests.
0.2%
Return rate
35%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Worm Castings questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
