---
title: "Wild Onion Killer — $45K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/wild-onion-killer"
last_updated: "2026-08-05T22:09:23.624Z"
locale: en
meta:
description: "Niche score 53/100 · $45K/yr market · 25K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $45K/yr market · 25K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Wild Onion Killer — $45K/yr Amazon US Niche (2026) - Flapen"
---
# **wild onion killer**
**Worth a look**
Shows demand growing +288.1% this quarter, but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 11Growth 100Conversion 63Competition 7Returns 99Price range 95Avg price 95Brand share 0Review moat 32Quality gap 77
**Growth**
**Incredible****+288.1%**
90-day search growth — must beat 0% to launch
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$32.05**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$21.22–$48.27**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Good****5.6%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****3,255.29**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$45K**
$45K/yr · 25K searches
**Competition**
**Bad****92%**
top-5 click share — a locked-up shelf
**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, wild onion killer is a $45K/yr Amazon United States market (25K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May–Jun–Aug. Verdict: Worth a look — 53/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **wild onion killer market data**
- **Units sold / yr**
- **2K–2K**
- avg 250–500/product
- **Revenue / yr**
- **$48K–$64K**
- units × avg price
- **Conversion rate**
- **5.6%**
- **Avg BSR**
- **#324**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **121 months**
- **Avg seller age**
- **139 days**
## **Competition & brand share**
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**52**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**92%**
Top 20: 100%
**Open market**
**0%**
- Monterey75% - Ortho9% - Southern Ag7% - Spruce5% - Hi-Yield5%
## **Demand & seasonality**
Weekly Amazon search volume, last 55 weeks — +288.1% search growth over the last 90 days.
4K3KSpike '25Spike '26 seasonJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Apr, May, Jun, Aug · busiest ÷ quietest = 17.6×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/wild-onion-killer/trend)
## **Top wild onion killer search terms**
- **thistle killer**9K/yr+336.6%5.4% conv. - **thistle weed killer**9K/yr+151.8%5.3% conv. - **thistle spray weed killer**2K/yr>1,000%2.5% conv. - **thistle killer concentrate**4K/yr+247.9%3.3% conv. - **best weed killer for thistles**678/yr+450.0%2.3% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/wild-onion-killer/search-terms)
## **Top wild onion killer 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%20%$9K40%$18K60%$27K80%$36K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Monterey Thistledown Bundled with Measuring Spoon - Weed Killer Thistle and Clover Control Concentrate - 8 oz**Monterey**$41.17**4.5★1,043 rev](https://www.amazon.com/dp/B0DTLKSSL5) [2**Monterey Star Thistle Killer Selective Broadleaf Weed Control 8 oz Bundled with Garden Measure Spoon Effective Against Spotted Knapweed Canada Thistle Musk Thistle Yellow Starthistle**Monterey**$48.27**4.1★25 rev](https://www.amazon.com/dp/B0GBYPY8BY) [3**Southern Ag Amine 2 4-D WEED KILLER 32oz - Quart**Southern Ag**$21.38**4.4★8,037 rev](https://www.amazon.com/dp/B0072289CA) [4**Ortho WeedClear Weed Killer for Lawns with Comfort Wand - Ready-To-Use Weed Killer Herbicide Wont Harm Grass (When Used as Directed) Kills Dandelion & Clover 1 gal.**Ortho**$21.25**4.1★3,008 rev](https://www.amazon.com/dp/B0714DBMJ1) [5**Spruce Weed Killer Spray Power Wand Kit - Weed + Grass Killer Reusable Weed Sprayer Spot-Treating Kills Weeds in Lawns and Gardens Additional 2 AA Batteries Included for Continuous Power (64 oz)**Spruce**$38.74**4.1★1,170 rev](https://www.amazon.com/dp/B0GT7N4VY1)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Spruce Weed Killer Spray Power Wand Kit - Weed + Grass Killer Reusable Weed Sprayer Spot-Treating Kills Weeds in Lawns and Gardens Additional 2 AA Batteries Included for Continuous Power (64 oz)**Spruce**$38.74**1,170 rev3mo ago](https://www.amazon.com/dp/B0GT7N4VY1) [**Monterey Star Thistle Killer Selective Broadleaf Weed Control 8 oz Bundled with Garden Measure Spoon Effective Against Spotted Knapweed Canada Thistle Musk Thistle Yellow Starthistle**Monterey**$48.27**25 rev7mo ago](https://www.amazon.com/dp/B0GBYPY8BY) [**Monterey Thistledown Bundled with Measuring Spoon - Weed Killer Thistle and Clover Control Concentrate - 8 oz**Monterey**$41.17**1,043 rev1y ago](https://www.amazon.com/dp/B0DTLKSSL5) [**Ortho GroundClear Weed & Grass Killer with Comfort Wand - Kills Dandelions Chickweed Crabgrass Moss & More OMRI Listed Ready-to-Use Grass and Weed Killer Spray 1 gal.**Ortho**$21.22**7,858 rev7y ago](https://www.amazon.com/dp/B07N6X547M) [**Ortho WeedClear Weed Killer for Lawns with Comfort Wand - Ready-To-Use Weed Killer Herbicide Wont Harm Grass (When Used as Directed) Kills Dandelion & Clover 1 gal.**Ortho**$21.25**3,008 rev9y ago](https://www.amazon.com/dp/B0714DBMJ1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Spruce Weed Killer Spray Power Wand Kit - Weed + Grass Killer Reusable Weed Sprayer Spot-Treating Kills Weeds in Lawns and Gardens Additional 2 AA Batteries Included for Continuous Power (64 oz)**Spruce**$38.74**4.1★**▲ 67%**](https://www.amazon.com/dp/B0GT7N4VY1) [**Monterey Star Thistle Killer Selective Broadleaf Weed Control 8 oz Bundled with Garden Measure Spoon Effective Against Spotted Knapweed Canada Thistle Musk Thistle Yellow Starthistle**Monterey**$48.27**4.1★**▲ 30%**](https://www.amazon.com/dp/B0GBYPY8BY) [**Hi-Yield (21416) 2 4-D Selective Weed Killer (1 gal)**Hi-Yield**$32.28**4.4★**▲ 19%**](https://www.amazon.com/dp/B0058V1IV6) [**Ortho GroundClear Weed & Grass Killer with Comfort Wand - Kills Dandelions Chickweed Crabgrass Moss & More OMRI Listed Ready-to-Use Grass and Weed Killer Spray 1 gal.**Ortho**$21.22**4.3★**▲ 11%**](https://www.amazon.com/dp/B07N6X547M) [**Monterey Thistledown Bundled with Measuring Spoon - Weed Killer Thistle and Clover Control Concentrate - 8 oz**Monterey**$41.17**4.5★**— 3%**](https://www.amazon.com/dp/B0DTLKSSL5)
**~~View all trending →~~**
## **What buyers say about wild onion killer**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Pest/Insect Control**20%
*“This works great to kill them”*
**Ease Of Use**14%
*“Easy Peasy”*
**Advertised Vs Actual Product**11%
*“As advertised”*
**Quality-Overall**9%
*“The overall build quality is solid”*
**Spray/Flow**8%
*“Its so easy to spray”*
**Smell**7%
*“clean scent”*
**Value For Money**5%
*“great value”*
**Plant Growth**5%
*“I highly recommend it for herbicide treatment”*
**Safety Standards**3%
*“I feel safe using it”*
**Strength**2%
*“Effective in killing weeds”*
### **What buyers complain about **
**Functionality-Overall**22%
*“DID NOT WORK”*
**Pest/Insect Control**21%
*“Only a few weeds killed”*
**Value For Money**10%
*“fairly expensive”*
**Plant Growth**8%
*“the second just did t kill the growth”*
**Spray/Flow**5%
*“the sprayer wont spray”*
**Smell**3%
*“Smells terrible”*
**Advertised Vs Actual Product**3%
*“Not as advertised”*
**Durability**3%
*“needs persistence”*
**Quality-Overall**2%
*“not as good as expected”*
**Strength**1%
*“Not as Powerful”*
### **Top return reasons **
**Functionality-Overall**20%
**Value For Money**16%
**Spray/Flow**14%
**Advertised Vs Actual Product**13%
**Pest/Insect Control**12%
**Leak-Proof**7%
**Size-Overall**4%
**Defective Material/Parts**4%
**Plant Growth**2%
**Instructions/User Manual/Troubleshooting**2%
## **Common questions**
- **Is wild onion killer profitable to sell on Amazon United States?**
- The niche generates $45K/yr across 7 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +288.1%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the wild onion killer niche?**
- 5 brands and 52 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in wild onion killer?**
- Top complaints mined from reviews: Functionality-Overall, Pest/Insect Control, Value For Money. The return rate is 0.3%.
- **When does demand for wild onion killer peak?**
- Demand peaks in Apr–May–Jun–Aug; the busiest month runs 17.6× the quietest.
- **What does it cost to enter the wild onion killer niche?**
- Listings span $21.22–$48.27; the average listing price is $32.05 (sweet spot $15–$100). The average incumbent carries 3,255 reviews — the moat a new listing must climb.
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