Potassium Sulfate
PassPotassium Sulfate scores 66 out of 100, a Pass. Shoppers spend an estimated $129K a year here, search demand grew +132.4% this quarter, and an estimated 0.3% of orders come back.
- Flapen Score
- 66 / 100Top 13% of 8,839 Patio, Lawn & Garden niches · +10 vs the category median of 5666
- Market size
- $129K/yr55K searches / yr
- 90-day growth
- +132.4%search demand this quarter
- Competition
- 58%top-5 click share · 13 brands · 30 sellers
Flapen Score
Potassium Sulfate against its category
The dotted line is the Patio, Lawn & Garden average. Past it, Potassium Sulfate is stronger. Inside it, weaker.
Market
The Potassium Sulfate market on Amazon at a glance
Shoppers on Amazon United States searched for Potassium Sulfate 55K times last year and spent an estimated $129K. The top 5 brands take 67% of clicks. Demand peaks in Apr–Jun–Jul. Flapen scores it 66 out of 100, a Pass.
01 · Demand
An estimated 7.6% of those searches ended in a purchase.
Shoppers searched for this 55K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 7.6% of those searches ended in a purchase. Searches in the last 90 days moved +132.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $129K a year.
- Searches, last 12 months
- 55K
- Growth, 90 days vs prior 90
- +132.4%
- Conversion, latest week
- 7.6%
- Market size, estimated
- $129Ka year
- Peak month
- June4.6× the quietest month
- Top search term
- sulfate of potash16K searches a year
02 · Price
A sale here is worth $30.72.
Listings sell for $30.72 on average, from $9.83 to $85.27. Amazon reports units sold in ranges. This niche sold 4K to 5K a year. The average listing sells 100 to 250 of them. At $30.72 that is $3K to $8K a year per listing.
- Average price
- $30.72inside the $15 to $100 sweet spot
- Price range
- $9.83–$85.27
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 4K–5K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $3K–$8K
- Returns
- 0.3%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
76% of listings pay for placement with sponsored ads. 62% ship with Prime. On an average day, 10.6% of listings are out of stock. The average listing ranks #1,089 within Soils, Mulches & Planting Media. It carries 172 reviews at 4.57 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 76%
- Prime listings
- 62%
- Out of stock, average day
- 10.6%
- Average rank
- #1,089in Soils, Mulches & Planting Media
- Average rating
- 4.57 starsAmazon United States average 4.42 stars
- Average reviews
- 172per listing
- Listings tracked
- 21
04 · Newcomers
4 of last year's 6 launches cleared the first-year sales bar.
6 products launched here in the last 12 months. 4 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 79 months on average, so the names here are established.
- Launched, last 12 months
- 6
- Successful launches
- 4Amazon's first-year sales bar
- Average brand age
- 79 months
Products
Top Potassium Sulfate products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 15, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Southern Ag Sulfate of Potash 0-0-50 5 LB Size: 5 LB
- Price
- $19.74
- Rating
- 4.6/5
- Reviews
- 157
- Age
- 15y ago

Organic Sulfate of Potash 0-0-50 Made in USA - OMRI Listed - Water Soluble SOP Potassium Plant Food for Plants & Flower Gardens - 3LB Low Chlorine Fertilizer. Enhances Color & Taste!
- Price
- $25.01
- Rating
- 4.7/5
- Reviews
- 160
- Age
- 3y ago

Down To Earth All Natural Fertilizers Organic Solution Grade Potassium Sulfate - Professional Grade SOP Powder 200 mesh for Liquid or Spray Applications 0-0-50 1 lb
- Price
- $17.66
- Rating
- 4.7/5
- Reviews
- 451
- Age
- 7y ago

1 Pound - Potassium Sulfate - Sulfate of Potash
- Price
- $9.83
- Rating
- 4.4/5
- Reviews
- 781
- Age
- 15y ago

Sulfate of Potash High-Potassium Supplement for Better Fruit Quality & Stronger Plants 8 oz
- Price
- $11.66
- Rating
- 4.7/5
- Reviews
- 37
- Age
- 1y ago
Trending
estimated 90-day click momentum
Southern Ag Sulfate of Potash 0-0-50 5 LB Size: 5 LB
- Price
- $19.69
- Rating
- 4.6/5
- Reviews
- 123
- Age
- 15y ago

Potassium Sulfate Sulfate of Potash 0-0-50 Fertilizer for Vegetable Gardens Ideal for Soil Enrichment Plant Growth & Maximum Crop Yield (1 LB)
- Price
- $9.93
- Rating
- 4.7/5
- Reviews
- 7
- Age
- 4mo ago

CountryMax Potash Fertilizer 50 lb High Potassium Plant Food for Strong Roots Improved Yield & Plant Health for Lawn & Garden
- Price
- $57.91
- Rating
- 4.4/5
- Reviews
- 13
- Age
- 3mo ago

Supply Solutions | 0-0-50 Plus 17% Sulfur | Golden K-Max Sulfate of Potash (SOP) - Granular Fertilizer | High Potassium Plant Fertilizer for Indoor and Outdoor Garden - Stronger Roots (25 Pounds)
- Price
- $54.25
- Rating
- 4.0/5
- Reviews
- 5
- Age
- 4mo ago

1lb Potash Fertilizer 0-0-50 Sulfate of Potash Indoor Plant Fertilizer Potassium Fertilizer Plant Food for Houseplants Fruit Flower Tomato Promote Large Flower Blooming & Fruit Growth
- Price
- $10.17
- Rating
- 4.6/5
- Reviews
- 19
- Age
- 7mo ago
Newest
by launch date
CountryMax Potash Fertilizer 50 lb High Potassium Plant Food for Strong Roots Improved Yield & Plant Health for Lawn & Garden
- Price
- $57.91
- Rating
- 4.4/5
- Reviews
- 13
- Age
- 3mo ago

Potassium Sulfate Sulfate of Potash 0-0-50 Fertilizer for Vegetable Gardens Ideal for Soil Enrichment Plant Growth & Maximum Crop Yield (1 LB)
- Price
- $9.93
- Rating
- 4.7/5
- Reviews
- 7
- Age
- 4mo ago

Supply Solutions | 0-0-50 Plus 17% Sulfur | Golden K-Max Sulfate of Potash (SOP) - Granular Fertilizer | High Potassium Plant Fertilizer for Indoor and Outdoor Garden - Stronger Roots (40 Pounds)
- Price
- $69.39
- Rating
- 4.0/5
- Reviews
- 5
- Age
- 4mo ago

Supply Solutions | 0-0-50 Plus 17% Sulfur | Golden K-Max Sulfate of Potash (SOP) - Granular Fertilizer | High Potassium Plant Fertilizer for Indoor and Outdoor Garden - Stronger Roots (25 Pounds)
- Price
- $54.25
- Rating
- 4.0/5
- Reviews
- 5
- Age
- 4mo ago

Potassium Sulfate 0-0-50 for Vegetable Gardens Essential Nutrient for Plant Growth Soil Enrichment Crop Yield Optimization (1 lb)
- Price
- $10.06
- Rating
- 4.6/5
- Reviews
- 16
- Age
- 7mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 58% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 falling
Sellers
30
Est. top-5 brand share
67%
Top 20: 100%
Est. top-5 click share
58%
Top 20: 99%
Open market
26%
- Root 98 Warehouse23%
- Cz Garden Supply15%
- TPS NUTRIENTS11%
- Down To Earth All Natural Fertilizers10%
- Alpha Chemicals8%
- Supply Solutions7%
Demand
Potassium Sulfate search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, Jun, Jul · busiest ÷ quietest = 4.6×
Search terms
Top Potassium Sulfate search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- sulfate of potash16K/yr
- potassium sulfate18K/yr
- potassium sulfate fertilizer8K/yr
- 0-0-50 fertilizer5K/yr
- potassium sulfate 0-0-504K/yr
- sulfate of potash 0-0-504K/yr
Reviews and returns
What reviews say buyers love and hate about Potassium Sulfate
We read the reviews and the return reasons for every product selling here.
“My plants do seem to have perked up a bit”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Potassium Sulfate questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









