---
title: "Castile Soap for Plants — $94K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/castile-soap-for-plants"
last_updated: "2026-08-10T17:37:33.959Z"
locale: en
meta:
description: "Niche score 57/100 · $94K/yr market · 53K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $94K/yr market · 53K searches/yr. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Castile Soap for Plants — $94K/yr Amazon US Niche (2026) - Flapen"
---
# **castile soap for plants**
**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 24Growth 95Conversion 90Competition 31Returns 98Price range 79Avg price 79Brand share 36Review moat 19Quality gap 28
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Growth**
**Incredible****+128.9%**
90-day search growth — must beat 0% to launch
**Conversion**
**Great****10.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$16.45**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.41–$37.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$94K**
$94K/yr · 53K searches
**Review moat**
**Bad****15,227.07**
avg incumbent reviews — the moat a new listing must climb
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, castile soap for plants is a $94K/yr Amazon United States market (53K searches/yr). The top 5 brands hold 83% of demand. Verdict: Worth a look — 57/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **castile soap for plants market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$82K–$99K**
- units × avg price
- **Conversion rate**
- **10.9%**
- **Avg BSR**
- **#47**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **135 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**9 **—flat
**Sellers**
**100**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**12%**
- Yoken44% - Dr. Bronner's22% - Garden Safe6% - Dr. Natural6% - Safer5% - WHOLENATURALS5% - Open — no brand owns it (3 brands, 12%)
## **Demand**
Weekly Amazon search volume, last 9 weeks — +128.9% search growth over the last 90 days.
2K1KSpike '26May '26May '26May '26Jun '26Jun '26Jun '26Jun '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/castile-soap-for-plants/trend)
## **Top castile soap for plants search terms**
- **castile soap for plants**28K/yr+301.5%11.6% conv. - **plant soap**13K/yr-25.5%6.9% conv. - **yoken pure castile soap**3K/yr+117.8%9.7% conv. - **horticultural soap**4K/yr+119.4%8.3% conv. - **yoken castile soap**4K/yr-38.1%7.0% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/castile-soap-for-plants/search-terms)
## **Top castile soap for plants 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%$9K20%$19K30%$28K40%$38K1001K10K100K 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**Yoken Pure Castile Liquid Soap 8 Oz Unscented with Organic Oil EWG Verified**Yoken**$9.41**4.6★3,630 rev](https://www.amazon.com/dp/B0D2CZRT4R) [2**Dr. Bronners Pure-Castile Magic Liquid Soap (Peppermint 8 Ounce)- Made with Organic Oils 18-in1 Uses: Face Hair Hand & Body Soap Laundry Pets- Concentrated Vegan Non-GMO**Dr. Bronner's**$10.11**4.8★70,581 rev](https://www.amazon.com/dp/B000HJZS10) [3**Dr. Bronners Pure-Castile Magic Liquid Soap - Made with Regenerative Organic Certified Oils- 18-in-1 Uses for Face Body Hand Hair Laundry & More- Vegan Non-GMO- Body Wash- Peppermint 32oz**Dr. Bronner's**$16.99**4.8★70,581 rev](https://www.amazon.com/dp/B00028EYJ8) [4**Garden Safe Brand Insecticidal Soap Insect Killer 32 Fluid Ounces For Organic Gardening Kills Bugs Through Contact**Garden Safe**$10.52**4.4★2,640 rev](https://www.amazon.com/dp/B0BDVCCKKT) [5**Dr. Natural Castile Liquid Soap Peppermint 32 oz - Plant-Based - Made with Organic Shea Butter - Rich in Coconut and Olive Oils - Sulfate and Paraben-Free Cruelty-Free - Multi-Purpose Soap**Dr. Natural**$10.57**4.5★3,040 rev](https://www.amazon.com/dp/B01H630G7U)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WEBE Naturals Pure Unscented Castile Soap Refill 64 Oz | Face Body Wash Dishes Pets & Laundry**WEBE**$21.72**977 rev1y ago](https://www.amazon.com/dp/B0DN7MVRRL) [**Yoken Pure Castile Liquid Soap 8 Oz Unscented with Organic Oil EWG Verified**Yoken**$9.41**3,630 rev2y ago](https://www.amazon.com/dp/B0D2CZRT4R) [**Yoken Pure Castile Liquid Soap 33.8 Oz Unscent add Organic Oil EWG Verified**Yoken**$14.13**3,630 rev2y ago](https://www.amazon.com/dp/B0CZDNFP5K) [**Yoken Pure Castile Liquid Soap 128 Oz Unscented Body Wash Dishes with Pump**Yoken**$37.10**3,630 rev2y ago](https://www.amazon.com/dp/B0CZMVLJVJ) [**Neem Oil Spray for Plants with Peppermint Oil Natural Plant Wash Made for Indoor and Outdoor Plants Smart Grower 16oz Easy Ready to Use Spray**Smart Grower**$20.86**1,536 rev2y ago](https://www.amazon.com/dp/B0DCWQ9XSP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Dr. Bronners Pure-Castile Magic Liquid Soap (Peppermint 8 Ounce)- Made with Organic Oils 18-in1 Uses: Face Hair Hand & Body Soap Laundry Pets- Concentrated Vegan Non-GMO**Dr. Bronner's**$10.11**4.8★**▲ 92%**](https://www.amazon.com/dp/B000HJZS10) [**Dr. Natural Castile Liquid Soap Peppermint 32 oz - Plant-Based - Made with Organic Shea Butter - Rich in Coconut and Olive Oils - Sulfate and Paraben-Free Cruelty-Free - Multi-Purpose Soap**Dr. Natural**$10.57**4.5★**▲ 58%**](https://www.amazon.com/dp/B01H630G7U) [**WEBE Naturals Pure Unscented Castile Soap Refill 64 Oz | Face Body Wash Dishes Pets & Laundry**WEBE**$21.72**4.6★**▲ 51%**](https://www.amazon.com/dp/B0DN7MVRRL) [**Neem Oil Spray for Plants with Peppermint Oil Natural Plant Wash Made for Indoor and Outdoor Plants Smart Grower 16oz Easy Ready to Use Spray**Smart Grower**$20.86**4.5★**▲ 31%**](https://www.amazon.com/dp/B0DCWQ9XSP) [**Yoken Pure Castile Liquid Soap 8 Oz Unscented with Organic Oil EWG Verified**Yoken**$9.41**4.6★**▲ 18%**](https://www.amazon.com/dp/B0D2CZRT4R)
**~~View all trending →~~**
## **What buyers say about castile soap for plants**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“high-quality ingredients”*
**Smell**14%
*“Amazing product fragrance free”*
**Cleansing**13%
*“Clean and fresh”*
**Pest/Insect Control**7%
*“kills the bugs”*
**Ease Of Cleaning**7%
*“cleans very well”*
**Value For Money**5%
*“Good price”*
**Advertised Vs Actual Product**4%
*“Worked as advertised”*
**Soft Feel**4%
*“my face feels soft”*
**Ease Of Use**3%
*“Works quickly”*
**Lather**2%
*“Great lathering soap”*
### **What buyers complain about **
**Smell**11%
*“Has a hard smell to it”*
**Pest/Insect Control**8%
*“Not Effective Against White Fly”*
**Dilute/Watery**7%
*“It's more watery than I expected”*
**Leak-Proof**6%
*“arrived leaking”*
**Value For Money**5%
*“Not worth the money”*
**Spray/Flow**5%
*“Spray bottle defective”*
**Size-Overall**4%
*“It's a TINY bottle”*
**Allergies**3%
*“I started itching after using it”*
**Ease Of Cleaning**3%
*“It makes a huge mess”*
**Plant Growth**3%
*“My plants did not like this product”*
### **Top return reasons **
**Leak-Proof**26%
**Size-Overall**18%
**Smell**11%
**Value For Money**7%
**Advertised Vs Actual Product**7%
**Functionality-Overall**4%
**Spray/Flow**4%
**Pest/Insect Control**4%
**Moist/Dry**2%
**Ingredients-Overall**2%
## **Common questions**
- **Is castile soap for plants profitable to sell on Amazon United States?**
- The niche generates $94K/yr across 15 tracked products. 90-day search growth is +128.9%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the castile soap for plants niche?**
- 9 brands and 100 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in castile soap for plants?**
- Top complaints mined from reviews: Smell, Pest/Insect Control, Dilute/Watery. The return rate is 0.4%.
- **What does it cost to enter the castile soap for plants niche?**
- Listings span $9.41–$37.10; the average listing price is $16.45 (sweet spot $15–$100). The average incumbent carries 15,227 reviews — the moat a new listing must climb.
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