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Rockwool

Maybe

An estimated 1.0% of orders come back. But demand is soft, at -17.1% this quarter, so Rockwool is a Maybe.

Flapen Score
51
51 / 100
Ranks 5,822 of 8,839 Patio, Lawn & Garden niches · −5 vs the category median of 56
Market size
$424K/yr250K searches / yr
90-day growth
-17.1%search demand this quarter
Competition
67%top-5 click share · 9 brands · 11 sellers

Flapen Score

Rockwool against its category

The dotted line is the Patio, Lawn & Garden average. Past it, Rockwool is stronger. Inside it, weaker.

51Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Rockwool market on Amazon at a glance

Shoppers on Amazon United States searched for Rockwool 250K times last year and spent an estimated $424K. The top 5 brands take 91% of clicks. Demand peaks in Mar. Flapen scores it 51 out of 100, a Maybe.

01 · Demand

An estimated 6.2% of those searches ended in a purchase.

Shoppers searched for this 250K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 6.2% of those searches ended in a purchase. Searches in the last 90 days moved -17.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated $424K a year.

Searches, last 12 months
250K
Growth, 90 days vs prior 90
-17.1%
Conversion, latest week
6.2%
Market size, estimated
$424Ka year
Peak month
March1.5× the quietest month
Top search term
rockwool cubes85K searches a year

02 · Price

A sale here is worth $27.45.

Listings sell for $27.45 on average, from $8.01 to $122.40. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 500 to 750 of them. At $27.45 that is $14K to $21K a year per listing.

Average price
$27.45inside the $15 to $100 sweet spot
Price range
$8.01–$122.40
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
15K–20K
Units per listing a year
500–750
Revenue per listing a year
$14K–$21K
Returns
1.0%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

75% of listings pay for placement with sponsored ads. 90% ship with Prime. On an average day, 6.2% of listings are out of stock. The average listing ranks #367 within Hydroponics. It carries 586 reviews at 4.45 stars, so a new listing needs social proof before a better product.

Sponsored listings
75%
Prime listings
90%
Out of stock, average day
6.2%
Average rank
#367in Hydroponics
Average rating
4.45 starsAmazon United States average 4.42 stars
Average reviews
586per listing
Listings tracked
20

04 · Newcomers

1 of last year's 3 launches cleared the first-year sales bar.

3 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 48 months on average, so the names here are settling in.

Launched, last 12 months
3
Successful launches
1Amazon's first-year sales bar
Average brand age
48 months

Products

Top Rockwool products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 67% of clicks. Leaders hold, but buyers still shop past them.

Brands

9 falling

Sellers

11

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

67%

Top 20: 100%

Open market

5%

  • Brand 135%
  • Brand 228%
  • Brand 314%
  • Brand 49%
  • Brand 55%
  • Brand 63%
  • Open — no brand owns it (3 brands, 5%)

Demand

Rockwool search demand

Weekly searches over the year, seasonality beneath. Pick a range.

6K4KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Mar · busiest ÷ quietest = 1.5×

Search terms

Top Rockwool search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • rockwool cubes85K/yr
  • rockwool71K/yr
  • rock wool27K/yr
  • rock wool planting cubes23K/yr
  • rockwool for hydroponics6K/yr
  • rockwool cubes for hydroponics16K/yr
  • grodan rockwool cubes6K/yr
  • rock wool for hydroponic growing4K/yr
  • rockwool cubes 1.5 inch5K/yr
  • grow cubes3K/yr

Reviews and returns

What reviews say buyers love and hate about Rockwool

We read the reviews and the return reasons for every product selling here.

20%of positive reviews mention “Plant Growth”
31%of negative reviews mention “Size-Overall”
1.0%of orders come back
“Wrong Size for Me”
A buyer, on “Size-Overall”31% of negative reviews mention the same topic

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.

16 topics

NegativePositive

FAQ

Common Rockwool questions

Answered from the same tracked data.