---
title: "Aluminum Sulfate — $124K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/aluminum-sulfate"
last_updated: "2026-08-09T09:11:23.286Z"
locale: en
meta:
description: "Niche score 64/100 · $124K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 64/100 · $124K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Aluminum Sulfate — $124K/yr Amazon US Niche (2026) - Flapen"
---
# **aluminum sulfate**
**Worth a look**
Shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 28Growth 96Conversion 79Competition 36Returns 97Price range 77Avg price 95Brand share 59Review moat 81Quality gap 37
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Growth**
**Incredible****+133.8%**
90-day search growth — must beat 0% to launch
**Avg price**
**Incredible****$25.20**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****373.19**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****8.0%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$7.97–$117.45**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****69%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****63%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****$124K**
$124K/yr · 62K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, aluminum sulfate is a $124K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 64/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **aluminum sulfate market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$126K–$151K**
- units × avg price
- **Conversion rate**
- **8.0%**
- **Avg BSR**
- **#692**
- **Page quality**
- **0%**
- **Prime**
- **63%**
- **Sponsored**
- **56%**
- **Out of stock**
- **3.7%**
- **Avg brand age**
- **84 months**
- **Avg seller age**
- **161 days**
## **Competition & brand share**
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**47**
**Top-5 brand share**
**69%**
Top 20: 100%
**Top-5 click share**
**63%**
Top 20: 100%
**Open market**
**24%**
- Hoffman25% - Southern Ag17% - Generic10% - Hi-Yield9% - PURE ORIGINAL INGREDIENTS9% - Earth Science6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +133.8% search growth over the last 90 days.
3K2KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 5.4×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/aluminum-sulfate/trend)
## **Top aluminum sulfate search terms**
- **aluminum sulfate**48K/yr+129.7%7.9% conv. - **aluminum sulfate for plants**6K/yr+100.6%8.5% conv. - **aluminum sulfate for pool**4K/yr+563.3%2.8% conv. - **aluminum sulfate for soil**3K/yr+69.7%9.0% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/aluminum-sulfate/search-terms)
## **Top aluminum sulfate 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%$12K20%$25K30%$37K40%$50K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Hoffman Blue Magic Aluminum Sulfate**Hoffman**$19.62**4.6★276 rev](https://www.amazon.com/dp/B005K8XGJ4) [2**Southern Ag Aluminum Sulfate (Acidifies Soil) 5 LB Size: 5 LB**Southern Ag**$18.70**4.6★294 rev](https://www.amazon.com/dp/B0053NLMCY) [3**Aluminum Sulfate 5 lb.**Generic**$18.87**5.0★2 rev](https://www.amazon.com/dp/B0GXSSCNJ1) [4**Earth Science Fast Acting Sulfur Granules 5lb Reduces Soil pH and Nutrient Runoff Improves Growth & Color for Acid-Loving Plants Long-Lasting Lawn Care Supplement**Earth Science**$22.78**4.6★869 rev](https://www.amazon.com/dp/B0BS3S1RPV) [5**Voluntary Purchasing Group Fertilome 32175 Aluminum Sulfate Soil Conditioner 4-Pound**ferti-lome**$18.78**4.6★707 rev](https://www.amazon.com/dp/B000OV73V4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Aluminum Sulfate 5 lb.**Generic**$18.87**2 rev2mo ago](https://www.amazon.com/dp/B0GXSSCNJ1) [**Quick-Release Elemental Sulfur Soil Acidifier - Fertilizer for Hydrangeas Blueberries Citrus Roses Evergreens & More Aluminum Sulfate Alternative (8 oz - 0.5 lb.)**GARDENWISE**$7.97**36 rev12mo ago](https://www.amazon.com/dp/B0FJ6FZP1M) [**Aluminum Sulfate - High Purity | Industrial-Grade Multi-Purpose Water Treatment and Gardening Solution (500 Grams)**CCS CONSOLIDATED CHEMICAL & SOLVENTS**$18.22**4 rev1y ago](https://www.amazon.com/dp/B0DLH84DJQ) [**Hi-Yield (34175) Aluminum Sulfate (3.25 lbs.)**Hi-Yield**$17.15**12 rev2y ago](https://www.amazon.com/dp/B0CTD3FRF7) [**Hi-Yield (34176) Aluminum Sulfate (10 lbs.)**Hi-Yield**$34.01**4 rev2y ago](https://www.amazon.com/dp/B0CTD4Z3M4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Aluminum Sulfate 5 lb.**Generic**$18.87**5.0★**▲ 91%**](https://www.amazon.com/dp/B0GXSSCNJ1) [**Ammonium Sulfate - (NH4) 2SO4-1 Pound**Alpha Chemicals**$9.63**4.6★**▲ 38%**](https://www.amazon.com/dp/B007ODPGB4) [**Hi-Yield (34176) Aluminum Sulfate (10 lbs.)**Hi-Yield**$34.01**4.4★**▲ 26%**](https://www.amazon.com/dp/B0CTD4Z3M4) [**Quick-Release Elemental Sulfur Soil Acidifier - Fertilizer for Hydrangeas Blueberries Citrus Roses Evergreens & More Aluminum Sulfate Alternative (8 oz - 0.5 lb.)**GARDENWISE**$7.97**4.3★**▲ 20%**](https://www.amazon.com/dp/B0FJ6FZP1M) [**Pure Original Ingredients Aluminum Sulfate (4 oz) Iron Free Soil Additive**PURE ORIGINAL INGREDIENTS**$10.50**4.5★**▲ 16%**](https://www.amazon.com/dp/B07532SPM2)
**~~View all trending →~~**
## **What buyers say about aluminum sulfate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Plant Growth**34%
*“This has made a world of difference with my grass seed germinating”*
**Advertised Vs Actual Product**26%
*“As advertised”*
**Color**10%
*“I got the Blue color I was looking for”*
**Quality-Overall**10%
*“Good product”*
**Value For Money**7%
*“Great price”*
**Filtration**3%
*“Pool clarifier usage”*
**Pureness**3%
*“Perfect for reducing ph”*
**Size-Overall**3%
*“Perfect size for my raised bed garden”*
**Weight Heavy**2%
*“It was the weight expected”*
### **What buyers complain about **
**Value For Money**22%
*“Not a good price for the amount”*
**Plant Growth**22%
*“My blueberry plant hasnt grown so maybe I need to keep waiting”*
**Functionality-Overall**15%
*“I applied the substance to my Muddy Pond to clear it up it did not work of an aerating it with us 3,500 an hour pump for 3 days made no change”*
**Advertised Vs Actual Product**11%
*“As advertised. This is not alum.”*
**Measurement/Reading Accuracy**11%
*“I didnt measure”*
**Quality-Overall**11%
*“Bag ripped and was not good quality”*
### **Top return reasons **
**Advertised Vs Actual Product**25%
**Value For Money**21%
**Functionality-Overall**13%
**Leak-Proof**11%
**Size-Overall**10%
**Color**5%
**Defective Material/Parts**3%
**Plant Growth**2%
**Eco Friendliness**1%
**Contamination**1%
## **Common questions**
- **Is aluminum sulfate profitable to sell on Amazon United States?**
- The niche generates $124K/yr across 16 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +133.8%. Flapen's verdict: Worth a look (64/100).
- **How competitive is the aluminum sulfate niche?**
- 13 brands and 47 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 69% of demand.
- **What do buyers complain about in aluminum sulfate?**
- Top complaints mined from reviews: Value For Money, Plant Growth, Functionality-Overall. The return rate is 0.5%.
- **When does demand for aluminum sulfate peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 5.4× the quietest.
- **What does it cost to enter the aluminum sulfate niche?**
- Listings span $7.97–$117.45; the average listing price is $25.20 (sweet spot $15–$100). The average incumbent carries 373 reviews — the moat a new listing must climb.
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