Is hydroponics supplies profitable to sell on Amazon United States?

The niche generates $114K/yr across 47 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is -14.3%. Flapen's verdict: Worth a look (57/100).

How competitive is the hydroponics supplies niche?

36 brands and 59 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 45% of demand.

What do buyers complain about in hydroponics supplies?

Top complaints mined from reviews: Size-Overall, Plant Growth, Durability. The return rate is 1.6%.

When does demand for hydroponics supplies peak?

Demand peaks in Mar–Apr; the busiest month runs 2.8× the quietest.

What does it cost to enter the hydroponics supplies niche?

Listings span $7.75–$23.42; the average listing price is $13.63 (sweet spot $15–$100). The average incumbent carries 2,127 reviews — the moat a new listing must climb.

hydroponics supplies

Worth a look

Shows no brand lock-in (top 5 brands take 45% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Brand share

Great45%

top-5 brand share — no brand owns this niche

Returns

Great1.6%

return rate — above 5% kills the launch gate

Conversion

Good7.0%

search→purchase rate — share of searches ending in a sale

Competition

Great40%

top-5 click share — an open shelf

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Avg price

Good$13.63

avg listing price — sweet spot $15–$100

Price range

Good$7.75–$23.42

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay2,126.91

avg incumbent reviews — the moat a new listing must climb

Market size

Okay$114K

$114K/yr · 120K searches

Growth

Bad-14.3%

90-day search growth — must beat 0% to launch

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, hydroponics supplies is a $114K/yr Amazon United States market (120K searches/yr). The top 5 brands hold 45% of demand. Demand peaks in Mar–Apr. Verdict: Worth a look — 57/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

hydroponics supplies market data

Units sold / yr: 8K–10K; avg 100–250/product
Revenue / yr: $109K–$136K; units × avg price
Conversion rate: 7.0%
Avg BSR: #50
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 5.8%
Avg brand age: 45 months
Avg seller age: 165 days

Competition & brand share

Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.

Brands

36 falling

Sellers

Top-5 brand share

45%

Top 20: 84%

Top-5 click share

40%

Top 20: 76%

Open market

50%

SZLJYLM11%
Ahopegarden10%
MAQIHAN9%
GARDENCUBE8%
VCTMSKT7%
DRYADES5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.3% search growth over the last 90 days.

Peak months: Mar, Apr · busiest ÷ quietest = 2.8×

Open Trend

Top hydroponics supplies search terms

hydroponic sponges21K/yr -15.3%9.5% conv.
hydroponics supplies22K/yr -20.2%2.6% conv.
grow sponges for hydroponics17K/yr -1.7%9.3% conv.
grow sponges16K/yr -25.5%7.8% conv.
hydroponic grow sponges13K/yr -1.1%9.7% conv.
hydroponic supplies13K/yr -13.7%2.8% conv.
hydroponic accessories8K/yr -15.1%1.6% conv.
hydroponic sponge5K/yr -14.8%5.1% conv.
grow sponge3K/yr +0.4%5.1% conv.
ahopegarden supplies3K/yr -47.8%9.3% conv.

All search terms

Top hydroponics supplies 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

SZLJYLM Grow Sponges 60 Pack Hydroponics Replacement Root Growth Sponges Compatible with Aero Garden iDOO and Most Other Brands Sponge for Hydroponic Indoor Garden System

SZLJYLM$9.094.5★162 rev

MAQIHAN 50 Grow Sponges for Hydroponics - Seed Pods for Garden Seed Starter Pods Growing System Plant for Seed Plugs Garden Cube Sponges Replacement

MAQIHAN$8.014.3★619 rev

GARDENCUBE 166pcs Hydroponic Pods Kit: Compatible with Aerogarden Grow Anything Herb Kits - Includes Grow Sponges Grow Baskets Grow Domes Labels A&B Plant Food - Hydroponics Supplies for Most Brand

GARDENCUBE$17.154.5★2,238 rev

VCTMSKT 60 pcs Hydroponic Grow Sponges Seed Pods Replacement Compatible with AeroGarden iDOO and Most Hydroponic Systems. Rapid Rooting Nursery Sponges.

VCTMSKT$8.874.2★112 rev

DRYADES 50ct Grow Sponges Hydroponic Root Sponges Compatible Aero Garden iDOO Hydroponics

DRYADES$8.904.4★318 rev

Newest

by launch date

MEYCEMT Hydroponic Growing Sponges 50 Pack Universal Fit Sponges & Seed Pods for Starting Seeds Indoor Outdoor Garden for Seed Germination & Plant Cloning Stronger Roots

MEYCEMT$15.3380 rev

8mo ago

VCTMSKT 60 pcs Hydroponic Grow Sponges Seed Pods Replacement Compatible with AeroGarden iDOO and Most Hydroponic Systems. Rapid Rooting Nursery Sponges.

VCTMSKT$8.87112 rev

9mo ago

SZLJYLM Grow Sponges 60 Pack Hydroponics Replacement Root Growth Sponges Compatible with Aero Garden iDOO and Most Other Brands Sponge for Hydroponic Indoor Garden System

SZLJYLM$9.09162 rev

11mo ago

Ahopegarden 52PCS Hydroponics Pods Kit: Compatible with Aerogarden Includes 24 Grow Sponges 24 Pods Labels 4 A&B Plant Food - Hydroponics Supplies for Most Brands

Ahopegarden$10.461,446 rev

1y ago

SEEWAAZEE 79 PCS Hydroponic Indoor Seed Pods Growing System Kit for Aerogarden & Other Brands - Seed Starter Growing Herb Pods Kit with 24 Grow Sponges 12 Baskets 12 Domes 30 Labels & 1 Tweezer

Seewaazee$7.94438 rev

1y ago

What buyers say about hydroponics supplies

What buyers praise and complain about, mined from review topics.

What buyers love

Plant Growth24%

“promoting strong root growth”

Value For Money12%

“Excellent value”

Quality-Overall12%

“the quality is solid for the price”

Advertised Vs Actual Product11%

“Exactly as advertised”

Size-Overall10%

“are a reasonable size”

Ease Of Use6%

“Easy to use”

Strength3%

“Strong pump”

Durability2%

“still going strong months later”

Ease Of Cleaning1%

“Easy to clean”

Water Flow1%

“Works amazing, moves a lot of water fast”

What buyers complain about

Size-Overall21%

“somewhat large”

Plant Growth16%

“No growth of seeds”

Durability9%

“Broke quickly”

Quality-Overall9%

“feel cheaply made”

Functionality-Overall5%

“Disappointed with performance”

Value For Money4%

“Not worth the price”

Advertised Vs Actual Product4%

“False advertisement”

Material Quality2%

“These are not made out of quality material”

Moist/Dry2%

“Do not stay moist”

Instructions/User Manual/Troubleshooting1%

“Needs better instructions”

Top return reasons

Size-Overall51%

Functionality-Overall11%

Advertised Vs Actual Product10%

Value For Money4%

Defective Material/Parts3%

Product Condition2%

Strength2%

Compatibility-Overall2%

Plant Growth2%

Material Quality1%

Common questions

Is hydroponics supplies profitable to sell on Amazon United States?: The niche generates $114K/yr across 47 tracked products. 4 of 6 products launched in the last 360 days are still selling. 90-day search growth is -14.3%. Flapen's verdict: Worth a look (57/100).
How competitive is the hydroponics supplies niche?: 36 brands and 59 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 45% of demand.
What do buyers complain about in hydroponics supplies?: Top complaints mined from reviews: Size-Overall, Plant Growth, Durability. The return rate is 1.6%.
When does demand for hydroponics supplies peak?: Demand peaks in Mar–Apr; the busiest month runs 2.8× the quietest.
What does it cost to enter the hydroponics supplies niche?: Listings span $7.75–$23.42; the average listing price is $13.63 (sweet spot $15–$100). The average incumbent carries 2,127 reviews — the moat a new listing must climb.