---
title: "St Augustine Grass Fertilizer — $515K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/st-augustine-grass-fertilizer"
last_updated: "2026-08-10T13:15:46.981Z"
locale: en
meta:
description: "Niche score 62/100 · $515K/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 62/100 · $515K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "St Augustine Grass Fertilizer — $515K/yr Amazon US Niche (2026) - Flapen"
---
# **st augustine grass fertilizer**
**Worth a look**
Shows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 60Growth 94Conversion 80Competition 26Returns 98Price range 91Avg price 95Brand share 0Review moat 25Quality gap 65
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$31.84**
avg listing price — sweet spot $15–$100
**Growth**
**Great****+107.7%**
90-day search growth — must beat 0% to launch
**Price range**
**Great****$11.05–$87.74**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****8.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$515K**
$515K/yr · 194K searches
**Competition**
**Okay****70%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,755.33**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, st augustine grass fertilizer is a $515K/yr Amazon United States market (194K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 62/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **st augustine grass fertilizer market data**
- **Units sold / yr**
- **15K–20K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **$478K–$637K**
- units × avg price
- **Conversion rate**
- **8.3%**
- **Avg BSR**
- **#192**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **57 months**
- **Avg seller age**
- **145 days**
## **Competition & brand share**
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**3 **—flat
**Sellers**
**28**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**0%**
- Scotts89% - Simple Lawn Solutions7% - TPS NUTRIENTS4% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +107.7% search growth over the last 90 days.
9K7KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 7.1×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/st-augustine-grass-fertilizer/trend)
## **Top st augustine grass fertilizer search terms**
- **lawn food**30K/yr+154.5%5.4% conv. - **green grass**32K/yr+14.3%1.5% conv. - **scotts green max lawn food**17K/yr+207.2%18.8% conv. - **st augustine grass fertilizer**23K/yr+14.8%3.5% conv. - **lawn food for grass**13K/yr+151.1%5.2% conv. - **summer lawn fertilizer**8K/yr>1,000%5.4% conv. - **grass food**10K/yr+136.0%5.2% conv. - **summer fertilizer for lawns**8K/yr>1,000%6.7% conv. - **scotts green max**8K/yr+165.4%14.9% conv. - **greener grass**11K/yr+72.5%1.5% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/st-augustine-grass-fertilizer/search-terms)
## **Top st augustine grass 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%10%$52K20%$103K30%$155K40%$206K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Scotts Green Max Lawn Food 5 000 sq. ft.**Scotts**$29.54**4.5★9,182 rev](https://www.amazon.com/dp/B0168K8VUQ) [2**Scotts Turf Builder Lawn Food 12.5 lbs.**Scotts**$21.59**4.6★8,041 rev](https://www.amazon.com/dp/B005W1QXQW) [3**Scotts Green Max Lawn Food 33.33 lbs.**Scotts**$57.18**4.5★9,182 rev](https://www.amazon.com/dp/B0168K8VQK) [4**Scotts Liquid Green Max Lawn Food 32 oz.**Scotts**$23.26**4.2★414 rev](https://www.amazon.com/dp/B0BZN5843P) [5**Advanced 16-4-8 Balanced NPK - Lawn Food Quality Liquid Fertilizer - Spring & Summer Concentrated Spray - Any Grass Type - Simple Lawn Solutions (32 Ounce)**Simple Lawn Solutions**$23.46**4.2★11,223 rev](https://www.amazon.com/dp/B06XWFL84R)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Scotts Turf Builder Lawn Food 15.8 lbs.**Scotts**$23.76**131 rev5mo ago](https://www.amazon.com/dp/B0GN7TJ2X3) [**Scotts Liquid Green Max Lawn Food 32 fl. oz.**Scotts**$19.28**165 rev9mo ago](https://www.amazon.com/dp/B0FWY9PF18) [**Scotts Turf Builder Liquid Lawn Food 32 fl. oz.**Scotts**$15.91**98 rev9mo ago](https://www.amazon.com/dp/B0FWY7GYNR) [**St Augustine Grass Fertilizer Liquid Lawn Food for Thicker Growth New Runners & Rich Green Color 8 oz**TPS NUTRIENTS**$11.05**81 rev11mo ago](https://www.amazon.com/dp/B0FM4QDKBJ) [**St Augustine Grass Fertilizer Liquid Lawn Food for Thicker Growth New Runners & Rich Green Color 1 Gallon**TPS NUTRIENTS**$39.37**81 rev11mo ago](https://www.amazon.com/dp/B0FM62ZB8N)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Scotts Turf Builder Liquid Lawn Food 32 fl. oz.**Scotts**$15.91**4.2★**▲ 90%**](https://www.amazon.com/dp/B0FWY7GYNR) [**Scotts Turf Builder Lawn Food 15.8 lbs.**Scotts**$23.76**4.1★**▲ 88%**](https://www.amazon.com/dp/B0GN7TJ2X3) [**Scotts Turf Builder SummerGuard Lawn Food with Insect Control 40.05 lbs.**Scotts**$87.74**4.5★**▲ 72%**](https://www.amazon.com/dp/B00HJBOPK4) [**Scotts Liquid Green Max Lawn Food 32 fl. oz.**Scotts**$19.28**4.2★**▲ 52%**](https://www.amazon.com/dp/B0FWY9PF18) [**Scotts Turf Builder Lawn Food 37.50 lbs.**Scotts**$50.89**4.6★**▲ 20%**](https://www.amazon.com/dp/B005W1QYDO)
**~~View all trending →~~**
## **What buyers say about st augustine grass fertilizer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Plant Growth**29%
*“seems to really boost growth quickly”*
**Ease Of Use**16%
*“Easy to Apply”*
**Quality-Overall**11%
*“Excellent Product”*
**Value For Money**11%
*“Great value for the money”*
**Color**6%
*“richer in color”*
**Advertised Vs Actual Product**6%
*“AS ADVERTISED”*
**Spray/Flow**3%
*“Steady stream of water”*
**Instructions/User Manual/Troubleshooting**3%
*“Has very clear instructions”*
**Thickness**2%
*“thicker without any patchy growth”*
**Leak-Proof**1%
*“Thanks for the leaky connector”*
### **What buyers complain about **
**Plant Growth**20%
*“I have not seen any new growth and it is still dead from when I originally applied the weed and feed”*
**Functionality-Overall**15%
*“Didnt work”*
**Spray/Flow**8%
*“my sprayer did not distribute fluid evenly”*
**Value For Money**8%
*“Yes, pricey as some say”*
**Quality-Overall**7%
*“Garbage”*
**Color**6%
*“Some patches brown”*
**Leak-Proof**4%
*“Leaking bottle horrible”*
**Size-Overall**3%
*“The granules are larger than what I'm used to”*
**Flammable**2%
*“It burned my grass”*
**Advertised Vs Actual Product**2%
*“The bottle looks different”*
### **Top return reasons **
**Leak-Proof**22%
**Value For Money**21%
**Functionality-Overall**17%
**Advertised Vs Actual Product**12%
**Spray/Flow**6%
**Size-Overall**6%
**Defective Material/Parts**3%
**Plant Growth**3%
**Contamination**2%
**Ease Of Use**1%
## **Common questions**
- **Is st augustine grass fertilizer profitable to sell on Amazon United States?**
- The niche generates $515K/yr across 15 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is +107.7%. Flapen's verdict: Worth a look (62/100).
- **How competitive is the st augustine grass fertilizer niche?**
- 3 brands and 28 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in st augustine grass fertilizer?**
- Top complaints mined from reviews: Plant Growth, Functionality-Overall, Spray/Flow. The return rate is 0.4%.
- **When does demand for st augustine grass fertilizer peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 7.1× the quietest.
- **What does it cost to enter the st augustine grass fertilizer niche?**
- Listings span $11.05–$87.74; the average listing price is $31.84 (sweet spot $15–$100). The average incumbent carries 4,755 reviews — the moat a new listing must climb.
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