---
title: "Potash Fertiliser — £25K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/potash-fertiliser"
last_updated: "2026-08-01T00:46:31.664Z"
locale: en
meta:
description: "Niche score 43/100 · £25K/yr market · 38K searches/yr · £8.65 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £25K/yr market · 38K searches/yr · £8.65 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Potash Fertiliser — £25K/yr Amazon UK Niche (2026) - Flapen"
---
# **potash fertiliser**
**Skip it**
A small market ($25K/yr) — this niche doesn't clear our bar today.
Market size 6Growth 76Conversion 77Competition 17Returns 100Price range 21Avg price 24Brand share 20Review moat 56Quality gap 37
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****7.5%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Great****+62.6%**
90-day search growth — must beat 0% to launch
**Review moat**
**Good****1,257**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****£8.65**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£3.33–£18.09**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Bad****92%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****80%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£25K**
£25K/yr · 38K searches
According to Flapen's Amazon United Kingdom niche tracking, potash fertiliser is a £25K/yr Amazon United Kingdom market (38K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Skip it — 43/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **potash fertiliser market data**
- **Units sold / yr**
- **3K–4K**
- avg 250–500/product
- **Revenue / yr**
- **£26K–£35K**
- units × avg price
- **Conversion rate**
- **7.5%**
- **Avg BSR**
- **#93**
- **Page quality**
- **0%**
- **Prime**
- **45%**
- **Sponsored**
- **27%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **62 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▼falling
**Sellers**
**58**
**Top-5 brand share**
**92%**
Top 20: 100%
**Top-5 click share**
**80%**
Top 20: 100%
**Open market**
**4%**
- Levington52% - Westland14% - Elixir Gardens13% - SuperGift.com7% - Vitax Ltd6% - Grow Chem3% - Open — no brand owns it (2 brands, 4%)
## **Demand & seasonality**
Weekly Amazon search volume, last 65 weeks — +62.6% search growth over the last 90 days.
2K1KSpike '26 seasonMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 9.5×
[**Open Trend **](https://flapen.com/research/uk/home-garden/potash-fertiliser/trend)
## **Top potash fertiliser search terms**
- **potash fertiliser**11K/yr+38.8%9.0% conv. - **high potash fertiliser**8K/yr+128.5%6.1% conv. - **sulphate of potash**9K/yr+28.8%11.4% conv. - **potash**6K/yr+43.1%7.5% conv. - **potassium fertilizer**5K/yr+161.8%2.7% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/potash-fertiliser/search-terms)
## **Top potash fertiliser 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%£2K20%£5K30%£7K40%£10K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Levington Natural Sulphate of Potash for Flower & Fruit Development 1.5KG Carton**Levington**£7.29**4.6★234 rev](https://www.amazon.co.uk/dp/B0BSLQFVNZ) [2**Westland GF6279 Superphosphate Fertiliser Fruit and Vegetable Ripener 1.5 kg**Westland**£5.35**4.6★448 rev](https://www.amazon.co.uk/dp/B001P3YXN6) [3**Levington Tomorite Liquid Tomato Food Concentrate 1L Red**Levington**£3.33**4.7★7,268 rev](https://www.amazon.co.uk/dp/B09RK3HPH5) [4**1.5kg Sulphate of Potash Fertiliser Ready-to-Use for Fruits Vegetables and Vibrant Plant Growth**SuperGift.com**£9.97**4.4★25 rev](https://www.amazon.co.uk/dp/B0C823M6JD) [5**Elixir Gardens | Granular Sulphate of Potash/Potassium Sulphate Fertiliser | 250g - 25kg Available in Bag or Tub | Treats upto 165sqm | 5kg Tub**Elixir Gardens**£17.49**4.5★186 rev](https://www.amazon.co.uk/dp/B01BGQAKQ0)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**1.5kg Sulphate of Potash Fertiliser Ready-to-Use for Fruits Vegetables and Vibrant Plant Growth**SuperGift.com**£9.97**25 rev3y ago](https://www.amazon.co.uk/dp/B0C823M6JD) [**Levington Natural Sulphate of Potash for Flower & Fruit Development 1.5KG Carton**Levington**£7.29**234 rev3y ago](https://www.amazon.co.uk/dp/B0BSLQFVNZ) [**Grow Chem Fish Blood & Bone Fertiliser (1KG Bucket) Multi-Purpose Organic Fertiliser for Plants & Lawns Nutrient-Packed Plant Food and Soil Activator for Strong Healthy Produce Flowers & Lawns**Grow Chem**£6.88**871 rev4y ago](https://www.amazon.co.uk/dp/B09SY4NKYQ) [**Levington Tomorite Liquid Tomato Food Concentrate 1L Red**Levington**£3.33**7,268 rev4y ago](https://www.amazon.co.uk/dp/B09RK3HPH5) [**Elixir Gardens Soluble Sulphate of Potash (S.O.P) Fertiliser | Potassium Sulphate Plant Feed | 5kg Tub**Elixir Gardens**£18.09**165 rev4y ago](https://www.amazon.co.uk/dp/B09PYN8V4V)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Elixir Gardens UK High Potassium Liquid Fertiliser/Plant & Lawn Food | N.P.K 15-5-30 | Various Sizes 500ml-5L | 1 Litre Makes up to 200L of liquid feed | 1 Litre Bottle**Elixir Gardens**£8.11**4.5★**▲ 36%**](https://www.amazon.co.uk/dp/B0953NZR79) [**Phostrogen All Purpose Plant Food 800g - Plant and Edibles Fertiliser Feed - for Promoting Healthy Growth - Improves Drought Resistance - Plant Nutrition - Indoor and Garden Use**Phostrogen**£4.63**4.6★**▲ 30%**](https://www.amazon.co.uk/dp/B004R1WNCG) [**Levington Tomorite Liquid Tomato Food Concentrate 1L Red**Levington**£3.33**4.7★**▲ 26%**](https://www.amazon.co.uk/dp/B09RK3HPH5) [**ARKA - Plants K -liquid potassium fertilizer for plants (118ml.)**ARKA**£5.24**4.5★**▲ 15%**](https://www.amazon.co.uk/dp/B00CEZE04G) [**Grow Chem Fish Blood & Bone Fertiliser (1KG Bucket) Multi-Purpose Organic Fertiliser for Plants & Lawns Nutrient-Packed Plant Food and Soil Activator for Strong Healthy Produce Flowers & Lawns**Grow Chem**£6.88**4.6★**▲ 11%**](https://www.amazon.co.uk/dp/B09SY4NKYQ)
**~~View all trending →~~**
## **What buyers say about potash fertiliser**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**24%
*“Excellent value for money”*
**Plant Growth**23%
*“Good for your plants”*
**Quality-Overall**22%
*“Good quality tomatoes with this feed”*
**Advertised Vs Actual Product**11%
*“As described”*
**Ease Of Use**10%
*“Easy to use”*
**Size-Overall**2%
*“The size was good”*
**Efficiency**2%
*“Works well”*
**Durability**1%
*“Always used this for years”*
**Strength**1%
*“Reliable as usual good quick booster”*
**Color**1%
*“the leaves a nice colour”*
### **What buyers complain about **
**Leak-Proof**23%
*“It leaks out of the box when I open the outer package their was a fair bit of potash in the paper package leaked from box sort it out guys stop cutting corners on boxing”*
**Plant Growth**15%
*“so far havent seen any great results as my tomato plants came dead”*
**Value For Money**15%
*“Very expensive”*
**Size-Overall**12%
*“Small amounts”*
**Quality-Overall**10%
*“Not the best available”*
**Smell**4%
*“An inoffensive, slightly woody smell”*
**Measurement/Reading Accuracy**4%
*“sadly measuring cap of one badly cracked”*
**Advertised Vs Actual Product**3%
*“is that the photo representation is not accurate”*
### **Top return reasons **
**Leak-Proof**32%
**Size-Overall**21%
**Value For Money**21%
**Advertised Vs Actual Product**11%
**Plant Growth**5%
**Measurement/Reading Accuracy**5%
**Ease Of Use**5%
## **Common questions**
- **Is potash fertiliser profitable to sell on Amazon United Kingdom?**
- The niche generates £25K/yr across 11 tracked products. 90-day search growth is +62.6%. Flapen's verdict: Skip it (43/100).
- **How competitive is the potash fertiliser niche?**
- 8 brands and 58 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 92% of demand.
- **What do buyers complain about in potash fertiliser?**
- Top complaints mined from reviews: Leak-Proof, Plant Growth, Value For Money. The return rate is 0.0%.
- **When does demand for potash fertiliser peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 9.5× the quietest.
- **What does it cost to enter the potash fertiliser niche?**
- Listings span £3.33–£18.09; the average listing price is £8.65 (sweet spot $15–$100). The average incumbent carries 1,257 reviews — the moat a new listing must climb.
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