---
title: "Post Emergent Herbicide — $104K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/post-emergent-herbicide"
last_updated: "2026-08-07T21:18:11.836Z"
locale: en
meta:
description: "Niche score 52/100 · $104K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $104K/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Post Emergent Herbicide — $104K/yr Amazon US Niche (2026) - Flapen"
---
# **post emergent herbicide**
**Worth a look**
Shows low returns (0.5%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 26Growth 55Conversion 90Competition 18Returns 98Price range 80Avg price 91Brand share 0Review moat 34Quality gap 82
**Returns**
**Incredible****0.5%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$21.37**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****10.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$8.23–$43.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+28.0%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****3,054.67**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$104K**
$104K/yr · 45K searches
**Competition**
**Bad****79%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, post emergent herbicide is a $104K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May. Verdict: Worth a look — 52/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **post emergent herbicide market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$107K–$128K**
- units × avg price
- **Conversion rate**
- **10.7%**
- **Avg BSR**
- **#60**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **67%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **113 months**
- **Avg seller age**
- **134 days**
## **Competition & brand share**
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▲rising
**Sellers**
**90**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**79%**
Top 20: 100%
**Open market**
**0%**
- Ortho89% - Spectracide9% - Roundup1% - Southern Ag1% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 65 weeks — +28.0% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May · busiest ÷ quietest = 20.8×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/post-emergent-herbicide/trend)
## **Top post emergent herbicide search terms**
- **weed b gon concentrate**14K/yr+56.2%10.8% conv. - **weed be gone concentrate**5K/yr+97.7%11.6% conv. - **ortho weed killer concentrate**7K/yr+25.4%9.0% conv. - **weed killer concentrate for lawns**6K/yr+33.1%7.4% conv. - **ortho weed b gon concentrate**4K/yr+45.4%9.6% conv. - **post emergent**6K/yr-54.4%0.5% conv. - **ortho weed clear concentrate**3K/yr+27.1%17.0% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/post-emergent-herbicide/search-terms)
## **Top post emergent herbicide 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%$10K20%$21K30%$31K40%$41K1001K10K 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**Ortho WeedClear Lawn Weed Killer Concentrate - Weed Killer for Lawns Kills Crabgrass Dandelion Clover 32 fl. oz.**Ortho**$11.55**4.2★1,602 rev](https://www.amazon.com/dp/B07YM5S514) [2**Ortho WeedClear Weed Killer for Lawns Concentrate - Kills Dandelion & Clover Weed Killer Concentrate 1 gal.**Ortho**$36.81**4.3★1,634 rev](https://www.amazon.com/dp/B071LH73XJ) [3**Ortho Weed B Gon Chickweed Clover and Oxalis Killer for Lawns Concentrate Kills Creeping Charlie 16 fl. Oz**Ortho**$14.44**4.2★3,880 rev](https://www.amazon.com/dp/B00F4JS3SS) [4**Ortho Weed B Gon Plus Crabgrass Control Concentrate2 40 oz.**Ortho**$38.47**4.3★2,201 rev](https://www.amazon.com/dp/B00L3OLP8S) [5**Spectracide Weed Stop For Lawns Concentrate Kills Weed Roots Not The Lawn 40 fl Ounce**Spectracide**$8.23**4.3★1,688 rev](https://www.amazon.com/dp/B07BBSC88Y)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Ortho GroundClear Year Long Vegetation Killer2 Concentrate Kills and Prevents Weeds Up to 1 Year 2 gal. Black**Ortho**$43.82**3,588 rev2y ago](https://www.amazon.com/dp/B0CJLD1TS8) [**Ortho GroundClear Year Long Vegetation Killer2 Concentrate - Kills and Prevents Weeds Up to 1 Year 1 gal.**Ortho**$28.04**3,588 rev2y ago](https://www.amazon.com/dp/B0CJL7Q92X) [**Ortho GroundClear Year Long Vegetation Killer2 Concentrate - Weed Killer Concentrate Kills and Prevents Weeds Up to 1 Year 32 fl. oz.**Ortho**$11.27**3,588 rev2y ago](https://www.amazon.com/dp/B0CJL4541J) [**Spectracide Large Plot Weed Stop for Lawns Concentrate 1 Gallon Kills More Than 200 Types of Weeds as Listed**Spectracide**$32.04**311 rev4y ago](https://www.amazon.com/dp/B09X282WXX) [**Roundup for Lawns Concentrate Weed Killer for Northern Grasses Kills Crabgrass 32 fl. oz.**Roundup**$19.05**497 rev4y ago](https://www.amazon.com/dp/B09NCJ2ZXQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Ortho WeedClear Weed Killer for Lawns Refill - Herbicide Lawn Weed Killer Kills over 250 Listed Weeds Including Dandelion and Clover 1 Gal.**Ortho**$15.84**4.2★**▲ 53%**](https://www.amazon.com/dp/B072BXNBRM) [**Spectracide Weed Stop For Lawns Plus Crabgrass Killer AccuShot Refill 1.33 Gallons Kills More Than 470 Types Of Weeds As Listed Including Dandelion Chickweed Clover Crabgrass And Yellow Nutsedge**Spectracide**$16.18**4.0★**▲ 42%**](https://www.amazon.com/dp/B07K76CK3D) [**Ortho WeedClear Weed Killer for Lawns Concentrate - Kills Dandelion & Clover Weed Killer Concentrate 32 fl. oz.**Ortho**$11.88**4.2★**▲ 38%**](https://www.amazon.com/dp/B072FJBY1S) [**Ortho Weed B Gon Plus Crabgrass Control Concentrate2 40 oz.**Ortho**$38.47**4.3★**▲ 31%**](https://www.amazon.com/dp/B00L3OLP8S) [**Ortho WeedClear Weed Killer for Lawns Concentrate - Kills Dandelion & Clover Weed Killer Concentrate 1 gal.**Ortho**$36.81**4.3★**▲ 16%**](https://www.amazon.com/dp/B071LH73XJ)
**~~View all trending →~~**
## **What buyers say about post emergent herbicide**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Pest/Insect Control**20%
*“helped keep them from coming back”*
**Advertised Vs Actual Product**16%
*“Works as described”*
**Quality-Overall**12%
*“Excellent product for what its made for”*
**Plant Growth**11%
*“helping clear up overgrown areas”*
**Value For Money**9%
*“Fair price”*
**Instructions/User Manual/Troubleshooting**6%
*“Clear instructions”*
**Ease Of Use**4%
*“Easy to use”*
**Durability**2%
*“still NOTHING dead or dying”*
**Strength**2%
*“They are stronger”*
**Spray/Flow**2%
*“Excellent value and sprays very easy”*
### **What buyers complain about **
**Functionality-Overall**26%
*“Did not work as described”*
**Pest/Insect Control**18%
*“Doesn't do anything to the weed”*
**Plant Growth**11%
*“no changes in any of the weeds”*
**Value For Money**9%
*“The price is kinda high”*
**Spray/Flow**4%
*“do not leave in sprayer”*
**Quality-Overall**4%
*“Not A very good product”*
**Leak-Proof**3%
*“Leaks a lot”*
**Advertised Vs Actual Product**3%
*“False advertisement”*
**Durability**2%
*“Broken by the second use”*
**Natural Resource Wastage**2%
*“Waste”*
### **Top return reasons **
**Functionality-Overall**22%
**Leak-Proof**20%
**Advertised Vs Actual Product**13%
**Pest/Insect Control**11%
**Value For Money**9%
**Spray/Flow**6%
**Size-Overall**4%
**Defective Material/Parts**3%
**Plant Growth**2%
**Instructions/User Manual/Troubleshooting**2%
## **Common questions**
- **Is post emergent herbicide profitable to sell on Amazon United States?**
- The niche generates $104K/yr across 15 tracked products. 90-day search growth is +28.0%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the post emergent herbicide niche?**
- 4 brands and 90 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in post emergent herbicide?**
- Top complaints mined from reviews: Functionality-Overall, Pest/Insect Control, Plant Growth. The return rate is 0.5%.
- **When does demand for post emergent herbicide peak?**
- Demand peaks in Apr–May; the busiest month runs 20.8× the quietest.
- **What does it cost to enter the post emergent herbicide niche?**
- Listings span $8.23–$43.82; the average listing price is $21.37 (sweet spot $15–$100). The average incumbent carries 3,055 reviews — the moat a new listing must climb.
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