Is duckweed profitable to sell on Amazon United States?

The niche generates $187K/yr across 12 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Worth a look (50/100).

How competitive is the duckweed niche?

11 brands and 15 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 80% of demand.

What do buyers complain about in duckweed?

Top complaints mined from reviews: Size-Overall, Durability, Value For Money. The return rate is 0.6%.

When does demand for duckweed peak?

Demand peaks in Feb; the busiest month runs 2.2× the quietest.

What does it cost to enter the duckweed niche?

Listings span $7.12–$24.96; the average listing price is $11.98 (sweet spot $15–$100). The average incumbent carries 430 reviews — the moat a new listing must climb.

duckweed

Worth a look

Shows beatable incumbent ratings (3.6★), but soft demand (-17.6% this quarter) keeps it on the watch list.

Quality gap

Incredible3.6★

avg incumbent rating — lower means beatable quality

Returns

Incredible0.6%

return rate — above 6% kills the launch gate

Review moat

Great429.75

avg incumbent reviews — the moat a new listing must climb

Conversion

Good5.2%

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

Price range

Good$7.12–$24.96

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

Avg price

Good$11.98

avg listing price — sweet spot $15–$100

Brand share

Okay80%

top-5 brand share — brands hold most of the demand

Market size

Okay$187K

$187K/yr · 302K searches

Competition

Bad78%

top-5 click share — a locked-up shelf

Growth

Bad-17.6%

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

According to Flapen's Amazon United States niche tracking, duckweed is a $187K/yr Amazon United States market (302K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Feb. Verdict: Worth a look — 50/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

duckweed market data

Units sold / yr: 13K–15K; avg 750–1,000/product
Revenue / yr: $150K–$180K; units × avg price
Launch success: —; 2 of 4 new (360d)
Conversion rate: 5.2%
Avg BSR: #545
Page quality: 0%
Prime: 25%
Sponsored: 58%
Out of stock: 4.8%
Avg brand age: 62 months
Avg seller age: 169 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 falling

Sellers

Top-5 brand share

80%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

15%

Aquarium Plant Center38%
Quinn's Fins19%
Generic9%
InnoD9%
Awesome Aquatic6%
Aquarigram5%
Open — no brand owns it (5 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.6% search growth over the last 90 days.

Peak months: Feb · busiest ÷ quietest = 2.2×

Open Trend

Top duckweed search terms

duckweed124K/yr -21.5%3.7% conv.
duckweed live plant for aquarium62K/yr -10.1%3.4% conv.
duck weed34K/yr +5.6%3.9% conv.
duckweed seeds16K/yr -47.0%2.2% conv.
duck weed for aquariums live20K/yr -28.7%3.6% conv.
duck weed for ponds5K/yr >1,000%5.9% conv.
duckweed live plant9K/yr +12.6%4.7% conv.
live duckweed8K/yr -14.0%3.5% conv.
duck weed seeds7K/yr -52.3%3.1% conv.
giant duckweed4K/yr +6.5%6.8% conv.

All search terms

Top duckweed 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 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Giant Duckweed Spirodela polyrhiza Live Aquarium/Aquatic/Freshwater/Floating/Pond Plant Planted Tank Aquascaping by Aquarium Plant Center (30 Plants)

Aquarium Plant Center$7.124.2★993 rev

1000 Live Duckweed Plants LEMNA Minor

Quinn's Fins$11.543.3★1,676 rev

40+ Giant Duckweed (Spirodela polyrhiza) Live Floating Plants for Aquarium or Pond By TMDFishKeeping

InnoD$9.833.7★431 rev

60+ Live Giant Duckweed Plants Spirodela Polyrhiza Floating Plants for Pond Aquarium

Generic$12.463.7★90 rev

1000+ Live Duckweed Plants Lemna Minor Floating Aquarium & Pond Plant

Awesome Aquatic$11.513.7★15 rev

Newest

by launch date

5 000 Live Duckweed Plants (Lemna Minor) for Aquariums & Ponds | Fast-Growing Floating Aquarium Plant | Natural Fish Food for Koi Goldfish & Shrimp | Helps Reduce Nitrates | Healthy Live Plants

CZ Grain$16.031 rev

4w ago

1000+ Live Duckweed Plants Lemna Minor Floating Aquarium & Pond Plant

Awesome Aquatic$11.5115 rev

2mo ago

Floating Plant Bundle - Red Root Floaters Salvinia Giant Duckweed - Aquarium Live Plant Collection - (30+ Leaves Each)

Generic$24.9637 rev

7mo ago

500+ Golden Purslane Seeds Portulaca Sativa Leafy Little Hogweed Duckweed Herb Vegetable Garden Plant

SPROUTARAQ$7.572 rev

7mo ago

60+ Live Giant Duckweed Plants Spirodela Polyrhiza Floating Plants for Pond Aquarium

Generic$12.4690 rev

1y ago

What buyers say about duckweed

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

What buyers love

Plant Growth28%

“Good healthy plants”

Quality-Overall19%

“Arrived healthy and doing great”

Advertised Vs Actual Product11%

“As advertised”

Value For Money9%

“Well worth the money”

Color6%

“Very pretty”

Size-Overall5%

“they the perfect size”

Freshness2%

“arrived in good condition with visible”

Smell2%

“earthy smell just as they should”

Durability1%

“They can alive and thriving”

Ease Of Use1%

“Beautiful and Easy”

What buyers complain about

Size-Overall20%

“Small plants, small portion”

Durability18%

“all of them died after two weeks”

Value For Money14%

“also extremely expensive”

Plant Growth13%

“Somethings just dont grow”

Advertised Vs Actual Product8%

“Picture is misleading”

Contamination4%

“I felt sort of weird about something I saw in the bag, added water, HAD SO MANY detritus worms”

Quality-Overall4%

“Garbage”

Instructions/User Manual/Troubleshooting3%

“Followed the directions, they died”

Filtration2%

“I didn't know that it would clog up my internal filter”

Color2%

“it just turned brown I didn't get any kind of of multiplication of product or plant or anything it just went Brown so chickens didn't even get a chance to eat any of it”

Top return reasons

Size-Overall33%

Advertised Vs Actual Product19%

Plant Growth8%

Smell7%

Functionality-Overall7%

Defective Material/Parts5%

Leak-Proof2%

Quality-Overall2%

Adhesion/Stickiness2%

Moist/Dry2%

Common questions

Is duckweed profitable to sell on Amazon United States?: The niche generates $187K/yr across 12 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Worth a look (50/100).
How competitive is the duckweed niche?: 11 brands and 15 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 80% of demand.
What do buyers complain about in duckweed?: Top complaints mined from reviews: Size-Overall, Durability, Value For Money. The return rate is 0.6%.
When does demand for duckweed peak?: Demand peaks in Feb; the busiest month runs 2.2× the quietest.
What does it cost to enter the duckweed niche?: Listings span $7.12–$24.96; the average listing price is $11.98 (sweet spot $15–$100). The average incumbent carries 430 reviews — the moat a new listing must climb.