potash fertiliser
Skip itA small market ($25K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great7.5%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
Good1,257avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Avg price
Bad£8.65avg listing price — sweet spot $15–$100
Price range
Bad£3.33–£18.09cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Bad92%top-5 brand share — brand-locked demand
Competition
Bad80%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
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.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 9.5×
Top potash fertiliser search terms
- potash fertiliser11K/yr
- high potash fertiliser8K/yr
- sulphate of potash9K/yr
- potash6K/yr
- potassium fertilizer5K/yr
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.
All 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Levington Natural Sulphate of Potash for Flower & Fruit Development 1.5KG Carton
Levington£7.294.6★234 rev
Westland GF6279 Superphosphate Fertiliser Fruit and Vegetable Ripener 1.5 kg
Westland£5.354.6★448 rev
Levington Tomorite Liquid Tomato Food Concentrate 1L Red
Levington£3.334.7★7,268 rev
1.5kg Sulphate of Potash Fertiliser Ready-to-Use for Fruits Vegetables and Vibrant Plant Growth
SuperGift.com£9.974.4★25 rev
Elixir Gardens | Granular Sulphate of Potash/Potassium Sulphate Fertiliser | 250g - 25kg Available in Bag or Tub | Treats upto 165sqm | 5kg Tub
Elixir Gardens£17.494.5★186 rev
Newest
by launch date1.5kg Sulphate of Potash Fertiliser Ready-to-Use for Fruits Vegetables and Vibrant Plant Growth
SuperGift.com£9.9725 rev
Levington Natural Sulphate of Potash for Flower & Fruit Development 1.5KG Carton
Levington£7.29234 rev
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£6.88871 rev
Levington Tomorite Liquid Tomato Food Concentrate 1L Red
Levington£3.337,268 rev
Elixir Gardens Soluble Sulphate of Potash (S.O.P) Fertiliser | Potassium Sulphate Plant Feed | 5kg Tub
Elixir Gardens£18.09165 rev
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£8.114.5★
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£4.634.6★
Levington Tomorite Liquid Tomato Food Concentrate 1L Red
Levington£3.334.7★
ARKA - Plants K -liquid potassium fertilizer for plants (118ml.)
ARKA£5.244.5★
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£6.884.6★
What buyers say about potash fertiliser
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent value for money”
“Good for your plants”
“Good quality tomatoes with this feed”
“As described”
“Easy to use”
“The size was good”
“Works well”
“Always used this for years”
“Reliable as usual good quick booster”
“the leaves a nice colour”
What buyers complain about
“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”
“so far havent seen any great results as my tomato plants came dead”
“Very expensive”
“Small amounts”
“Not the best available”
“An inoffensive, slightly woody smell”
“sadly measuring cap of one badly cracked”
“is that the photo representation is not accurate”
Top return reasons
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.