Is phosphorus fertilizer profitable to sell on Amazon United States?

The niche generates $365K/yr across 23 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +107.6%. Flapen's verdict: Worth a look (65/100).

How competitive is the phosphorus fertilizer niche?

17 brands and 67 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 70% of demand.

What do buyers complain about in phosphorus fertilizer?

Top complaints mined from reviews: Plant Growth, Size-Overall, Functionality-Overall. The return rate is 0.3%.

When does demand for phosphorus fertilizer peak?

Demand peaks in Apr–May–Jun–Jul; the busiest month runs 5.2× the quietest.

What does it cost to enter the phosphorus fertilizer niche?

Listings span $7.58–$86.60; the average listing price is $26.22 (sweet spot $15–$100). The average incumbent carries 2,062 reviews — the moat a new listing must climb.

phosphorus fertilizer

Worth a look

Shows low returns (0.3%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.3%

return rate — above 5% kills the launch gate

Avg price

Incredible$26.22

avg listing price — sweet spot $15–$100

Growth

Great+107.6%

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

Price range

Great$7.58–$86.60

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

Conversion

Great8.9%

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

Brand share

Good70%

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

Market size

Good$365K

$365K/yr · 157K searches

Review moat

Okay2,062.13

avg incumbent reviews — the moat a new listing must climb

Competition

Okay62%

top-5 click share — leaders hold, buyers still browse

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Signals Trending Low Review Barrier

According to Flapen's Amazon United States niche tracking, phosphorus fertilizer is a $365K/yr Amazon United States market (157K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 65/100.

Data updated Jul 15, 2026 · scored weekly · How we score niches

phosphorus fertilizer market data

Units sold / yr: 13K–15K; avg 250–500/product
Revenue / yr: $328K–$393K; units × avg price
Conversion rate: 8.9%
Avg BSR: #748
Page quality: 0%
Prime: 83%
Sponsored: 78%
Out of stock: 0.0%
Avg brand age: 77 months
Avg seller age: 142 days

Competition & brand share

The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.

Brands

17 falling

Sellers

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

62%

Top 20: 98%

Open market

24%

TPS NUTRIENTS26%
The Grow Co15%
Easy Peasy12%
Espoma11%
Miracle-Gro6%
Farmer's Secret6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +107.6% search growth over the last 90 days.

Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 5.2×

Open Trend

Top phosphorus fertilizer search terms

phosphorus fertilizer58K/yr +149.2%7.7% conv.
high phosphorus fertilizer33K/yr +173.9%5.9% conv.
phosphate fertilizer12K/yr +37.1%6.8% conv.
triple phosphate fertilizer6K/yr +99.6%9.8% conv.
phosphorus for plants6K/yr +84.9%6.8% conv.
high phosphorus plant fertilizer7K/yr +109.7%7.5% conv.
triple super phosphate4K/yr +79.1%10.3% conv.
liquid phosphorus fertilizer4K/yr +188.0%5.0% conv.
super phosphate fertilizer5K/yr +20.5%9.6% conv.
organic phosphorus fertilizer4K/yr +83.9%2.3% conv.

All search terms

Top phosphorus fertilizer 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 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Phosphorus Fertilizer Liquid Bloom Booster for Strong Roots Bigger Blooms & Flower Development 8 oz

TPS NUTRIENTS$11.834.5★148 rev

Triple Super Phosphate 0-46-0 Fertilizer high Phosphorus Fertilizer Stronger Roots & Flower Formation Ideal Super Phosphate for Plants - Flowers Fruits Vegetables & Turf 5 lb

The Grow Co$18.334.6★418 rev

TRIPLE SUPER PHOSPHATE FERTILIZER 0-46-0 | phosphorus fertilizer for gardens lawns indoor and outdoor plants | ROCK PHOSPHATE PLANT FOOD FERTILIZER FOR ORCHIDS WISTERIA CACTUS AND ALL OTHER PLANTS

Easy Peasy$19.034.6★3,815 rev

Espoma Triple Phosphate Fertilizer 0-45-0 6.5lb. Bag; Promotes Root Growth and Blooming in All Flowering Plants Trees Shrubs and Vegetables. Granular for Easy Application. Pack of One.

Espoma$22.084.7★660 rev

Phosphorus & Potassium Fertilizer Liquid Bloom Booster for Strong Roots Better Blooms & Improved Fruit Development 8 oz

TPS NUTRIENTS$11.854.5★172 rev

Newest

by launch date

CountryMax Triple Super Phosphate 0-46-0 Fertilizer 50 Lbs High Phosphorus Water Soluble Plant Food for Root Growth Flowering & Vegetable Gardens

CountryMax$69.893 rev

2mo ago

Supply Solutions | 0-45-0 Triple Superphosphate with 13.5% Calcium | High Phosphorus Bloom Booster Fertilizer for Indoor Plants Flowers Orchids Citrus Lawns Vegetables & Fruit Trees (10 Pounds)

Supply Solutions$24.2819 rev

7mo ago

Supply Solutions | 0-45-0 Triple Superphosphate with 13.5% Calcium | High Phosphorus Bloom Booster Fertilizer for Indoor Plants Flowers Orchids Citrus Lawns Vegetables & Fruit Trees (40 Pounds)

Supply Solutions$86.6019 rev

8mo ago

Phosphorus & Potassium Fertilizer Liquid Bloom Booster for Strong Roots Better Blooms & Improved Fruit Development 8 oz

TPS NUTRIENTS$11.85172 rev

1y ago

Triple Super Phosphate Fertilizer Phosphorus Plant Food for Plants and Flower Gardens (1.9 Pounds)

OULLYY$11.0636 rev

1y ago

What buyers say about phosphorus fertilizer

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

What buyers love

Plant Growth52%

“Excellent Bloom Booster for Healthy Growth”

Quality-Overall17%

“high-quality product just by the sheer density of the bottle”

Value For Money7%

“Definitely worth it”

Ease Of Use6%

“Easy to use a good fertilizer”

Advertised Vs Actual Product6%

“REALLY WORKS AS ADVERTISED”

Color2%

“I love the color of the product”

Strength2%

“Effective,”

Smell2%

“Works well and doesn't smell. as other rose foods do”

Instructions/User Manual/Troubleshooting1%

“Highly recommend this product easy to measure Easy instructions my flowers”

Size-Overall1%

“perfect size”

What buyers complain about

Plant Growth21%

“For your law not flowers in pots”

Size-Overall12%

“bigger than ever”

Functionality-Overall11%

“I didnt get any results”

Smell11%

“disgusting smell”

Leak-Proof7%

“about 1/3 of the liquid had dripped into the bag”

Quality-Overall6%

“Poor quality control”

Value For Money4%

“the are expensive”

Ease Of Use3%

“awkward to use”

Thickness3%

“Very thin”

Advertised Vs Actual Product3%

“The liquid is not concentrated as mentioned in the description and reviews”

Top return reasons

Leak-Proof31%

Value For Money15%

Advertised Vs Actual Product14%

Size-Overall10%

Functionality-Overall6%

Plant Growth5%

Product Condition3%