---
title: "Phosphorus Fertilizer — $365K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/phosphorus-fertilizer"
last_updated: "2026-08-10T23:05:02.019Z"
locale: en
meta:
description: "Niche score 65/100 · $365K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 65/100 · $365K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Phosphorus Fertilizer — $365K/yr Amazon US Niche (2026) - Flapen"
---
# **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.
Market size 54Growth 94Conversion 82Competition 38Returns 99Price range 87Avg price 95Brand share 58Review moat 44Quality gap 21
**Returns**
**Incredible****0.3%**
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**
**Great****8.9%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****70%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$365K**
$365K/yr · 157K searches
**Review moat**
**Okay****2,062.13**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
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 ~~](https://flapen.com/research/methodology)
## **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**
**67**
**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.
6K4KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 5.2×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/phosphorus-fertilizer/trend)
## **Top phosphorus fertilizer search terms**
- **phosphorus fertilizer**58K/yr+149.2%7.7% conv. - **high phosphorus fertilizer**33K/yr+173.9%5.9% conv. - **phosphate fertilizer**12K/yr+37.1%6.8% conv. - **triple phosphate fertilizer**6K/yr+99.6%9.8% conv. - **phosphorus for plants**6K/yr+84.9%6.8% conv. - **high phosphorus plant fertilizer**7K/yr+109.7%7.5% conv. - **triple super phosphate**4K/yr+79.1%10.3% conv. - **liquid phosphorus fertilizer**4K/yr+188.0%5.0% conv. - **super phosphate fertilizer**5K/yr+20.5%9.6% conv. - **organic phosphorus fertilizer**4K/yr+83.9%2.3% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/phosphorus-fertilizer/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.
0%5%$18K10%$36K15%$55K20%$73K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**Phosphorus Fertilizer Liquid Bloom Booster for Strong Roots Bigger Blooms & Flower Development 8 oz**TPS NUTRIENTS**$11.83**4.5★148 rev](https://www.amazon.com/dp/B0D4JHC68M) [2**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**$18.33**4.6★418 rev](https://www.amazon.com/dp/B0CN53M7LT) [3**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**$19.03**4.6★3,815 rev](https://www.amazon.com/dp/B075BY4GSF) [4**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**$22.08**4.7★660 rev](https://www.amazon.com/dp/B00AE23Z0G) [5**Phosphorus & Potassium Fertilizer Liquid Bloom Booster for Strong Roots Better Blooms & Improved Fruit Development 8 oz**TPS NUTRIENTS**$11.85**4.5★172 rev](https://www.amazon.com/dp/B0DQTQZKK4)
**~~View all top sellers →~~**
### **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**$69.89**3 rev2mo ago](https://www.amazon.com/dp/B0H11GRVLD) [**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**$24.28**19 rev7mo ago](https://www.amazon.com/dp/B0G4NNV5GY) [**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**$86.60**19 rev8mo ago](https://www.amazon.com/dp/B0FZ7NXQC4) [**Phosphorus & Potassium Fertilizer Liquid Bloom Booster for Strong Roots Better Blooms & Improved Fruit Development 8 oz**TPS NUTRIENTS**$11.85**172 rev1y ago](https://www.amazon.com/dp/B0DQTQZKK4) [**Triple Super Phosphate Fertilizer Phosphorus Plant Food for Plants and Flower Gardens (1.9 Pounds)**OULLYY**$11.06**36 rev1y ago](https://www.amazon.com/dp/B0D9WHBBD1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**CountryMax Triple Super Phosphate 0-46-0 Fertilizer 50 Lbs High Phosphorus Water Soluble Plant Food for Root Growth Flowering & Vegetable Gardens**CountryMax**$69.89**5.0★**▲ 117%**](https://www.amazon.com/dp/B0H11GRVLD) [**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**$24.28**4.8★**▲ 88%**](https://www.amazon.com/dp/B0G4NNV5GY) [**Miracle-Gro 1-Pound 1360011 Water Soluble Bloom Booster Flower Food 10-52-10 1 Pack**Miracle-Gro**$7.58**4.8★**▲ 76%**](https://www.amazon.com/dp/B00E7VMG7S) [**RAW Phosphorus 2 oz**RAW**$11.36**4.6★**▲ 45%**](https://www.amazon.com/dp/B00UL3YLM4) [**Miracle-Gro Water Soluble Bloom Booster Flower Food 4 lb**Miracle-Gro**$14.90**4.7★**▲ 41%**](https://www.amazon.com/dp/B00C4TPN7K)
**~~View all trending →~~**
## **What buyers say about phosphorus fertilizer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Plant Growth**52%
*“Excellent Bloom Booster for Healthy Growth”*
**Quality-Overall**17%
*“high-quality product just by the sheer density of the bottle”*
**Value For Money**7%
*“Definitely worth it”*
**Ease Of Use**6%
*“Easy to use a good fertilizer”*
**Advertised Vs Actual Product**6%
*“REALLY WORKS AS ADVERTISED”*
**Color**2%
*“I love the color of the product”*
**Strength**2%
*“Effective,”*
**Smell**2%
*“Works well and doesn't smell. as other rose foods do”*
**Instructions/User Manual/Troubleshooting**1%
*“Highly recommend this product easy to measure Easy instructions my flowers”*
**Size-Overall**1%
*“perfect size”*
### **What buyers complain about **
**Plant Growth**21%
*“For your law not flowers in pots”*
**Size-Overall**12%
*“bigger than ever”*
**Functionality-Overall**11%
*“I didnt get any results”*
**Smell**11%
*“disgusting smell”*
**Leak-Proof**7%
*“about 1/3 of the liquid had dripped into the bag”*
**Quality-Overall**6%
*“Poor quality control”*
**Value For Money**4%
*“the are expensive”*
**Ease Of Use**3%
*“awkward to use”*
**Thickness**3%
*“Very thin”*
**Advertised Vs Actual Product**3%
*“The liquid is not concentrated as mentioned in the description and reviews”*
### **Top return reasons **
**Leak-Proof**31%
**Value For Money**15%
**Advertised Vs Actual Product**14%
**Size-Overall**10%
**Functionality-Overall**6%
**Plant Growth**5%
**Product Condition**3%
**Smell**2%
**Defective Material/Parts**2%
**Contamination**2%
## **Common questions**
- **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.
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