gypsum
Worth a lookShows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Great$22.56avg listing price — sweet spot $15–$100
Conversion
Great11.4%search→purchase rate — share of searches ending in a sale
Price range
Great$8.00–$52.06cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great426avg incumbent reviews — the moat a new listing must climb
Market size
Good$554K$554K/yr · 216K searches
Growth
Good+26.9%90-day search growth — must beat 0% to launch
Brand share
Good74%top-5 brand share — brands hold most of the demand
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, gypsum is a $554K/yr Amazon United States market (216K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 61/100.
Data updated Jul 15, 2026 · scored weekly · How we score niches
gypsum market data
- Units sold / yr
- 20K–25K
- avg 1,000–1,250/product
- Revenue / yr
- $451K–$564K
- units × avg price
- Conversion rate
- 11.4%
- Avg BSR
- #889
- Page quality
- 0%
- Prime
- 73%
- Sponsored
- 60%
- Out of stock
- 0.7%
- Avg brand age
- 63 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
11 flat
Sellers
76
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
67%
Top 20: 100%
Open market
19%
- Earth Science31%
- Cz Garden Supply16%
- Olympus Myco11%
- Mycology Basics8%
- Espoma7%
- Down To Earth All Natural Fertilizers7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +26.9% search growth over the last 90 days.Peak months: Apr, May · busiest ÷ quietest = 2.8×
Top gypsum search terms
- gypsum93K/yr
- gypsum for soil67K/yr
- gypsum powder27K/yr
- gypsum for gardening12K/yr
- gypsum for lawn8K/yr
- pelletized gypsum5K/yr
- garden gypsum5K/yr
Top gypsum 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.
All 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Earth Science Fast Acting Gypsum Granules5 lb Soil Conditioner Adds Calcium Repairs Salt Damage & Root Growth with Nutri-Bond Runoff Reduction Technology
Earth Science$21.934.5★543 rev
Organic Gypsum Powder 5LB - Made in USA - OMRI Listed - Calcium Sulfate Dihydrate - Garden Soil Amendment Fertilizer for Lawns Plants Mushroom Cultivation. Calcium & Sulfur. Cures Blossom End Rot
Cz Garden Supply$15.954.7★453 rev
(1.0-20.0 lbs) Mycology Basics - Bulk Ultra-Fine Lab Grade Gypsum for Mushrooms Food Grade No Additives - Packaged in HEPA filtrated Enclosure for Sterility (1.0 lbs)
Mycology Basics$11.804.7★497 rev
Olympus Myco 97% Pure Gypsum Powder 1 lb High Solubility Calcium Sulfate Dihydrate for Soil Gardens Lawns and Mushroom Substrate
Olympus Myco$9.704.7★708 rev
Down To Earth All Natural Fertilizers Organic Prilled Garden Gypsum - Calcium Sulfate Loosens Clay Soil Greens Grade Mini Granules 5 lb
Down To Earth All Natural Fertilizers$19.244.8★1,138 rev
Newest
by launch date
Gypsum for Soil - Calcium for Plants - Gypsum Fertilizer for Gardening Lawn & Vegetables - Calcium for Garden (8 oz - 0.5 lb.)
GARDENWISE$8.1411 rev
Gypsum Powder for Mushroom Substrate | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Ultra Fine | Soil Conditioner | (Calcium Sulfate Dihydrate)
Mushroom Merchant$8.00160 rev
Olympus Myco 97% Pure Gypsum Powder 5 lbs High Solubility Calcium Sulfate Dihydrate for Soil Gardens Lawns Soil Conditioner
Olympus Myco$19.25708 rev
Olympus Myco 97% Pure Gypsum Powder 1 lb High Solubility Calcium Sulfate Dihydrate for Soil Gardens Lawns and Mushroom Substrate
Olympus Myco$9.70708 rev
Earth Science Fast Acting Gypsum Granules5 lb Soil Conditioner Adds Calcium Repairs Salt Damage & Root Growth with Nutri-Bond Runoff Reduction Technology
Earth Science$21.93543 rev
Trending
90-day click momentumOrganic Gypsum Powder 5LB - Made in USA - OMRI Listed - Calcium Sulfate Dihydrate - Garden Soil Amendment Fertilizer for Lawns Plants Mushroom Cultivation. Calcium & Sulfur. Cures Blossom End Rot
Cz Garden Supply$15.954.7★
Gypsum for Soil - Calcium for Plants - Gypsum Fertilizer for Gardening Lawn & Vegetables - Calcium for Garden (8 oz - 0.5 lb.)
GARDENWISE$8.144.4★
Greenway Biotech Gypsum Powder Calcium Sulfate to Improves Soil Drainage and Soil Water Relations- 100% Water Soluble Contains 97% Calcium Sulfate Dihydrate 22.5% Calcium and 18% Sulfur- 50 Pounds
Greenway Biotech, Inc.$52.064.7★
Olympus Myco 97% Pure Gypsum Powder 5 lbs High Solubility Calcium Sulfate Dihydrate for Soil Gardens Lawns Soil Conditioner
Olympus Myco$19.254.7★
Earth Science Fast Acting Gypsum Granules5 lb Soil Conditioner Adds Calcium Repairs Salt Damage & Root Growth with Nutri-Bond Runoff Reduction Technology
Earth Science$21.934.5★
What buyers say about gypsum
What buyers praise and complain about, mined from review topics.What buyers love
“Outstanding Gypsum Product”
“Coverage was as predicted”
“This works great when planting tomatoes”
“While much cheaper”
“Good product easy to use”
“Extra gifts sent with order”
“Works great for fungus”
“Since it doesn't break down readily in the packaged form”
What buyers complain about
“A bit pricey”
“Smaller than expected”
“Breaks up the clay”
“Organic Doesnt Mean Smells Like Ass Just cause it's organic doesnt mean that the gypsum should smell like a dead fish”
“Application directions don't make sense”
“Very disappointed I received my bag half the material was hard as a rock”
“Hard and lumpy”
“Reseeding was not working”
Top return reasons
Common questions
- Is gypsum profitable to sell on Amazon United States?
- The niche generates $554K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +26.9%. Flapen's verdict: Worth a look (61/100).
- How competitive is the gypsum niche?
- 11 brands and 76 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in gypsum?
- Top complaints mined from reviews: Value For Money, Size-Overall, Durability. The return rate is 0.4%.
- When does demand for gypsum peak?
- Demand peaks in Apr–May; the busiest month runs 2.8× the quietest.
- What does it cost to enter the gypsum niche?
- Listings span $8.00–$52.06; the average listing price is $22.56 (sweet spot $15–$100). The average incumbent carries 426 reviews — the moat a new listing must climb.