onion sets
Worth a lookShows low returns (0.0%), but soft demand (-33.0% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Review moat
Incredible83.84avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Competition
Great31%top-5 click share — an open shelf
Conversion
Good5.4%search→purchase rate — share of searches ending in a sale
Brand share
Good71%top-5 brand share — brands hold most of the demand
Avg price
Bad£7.83avg listing price — sweet spot $15–$100
Price range
Bad£2.33–£17.25cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Bad£45K£45K/yr · 106K searches
Growth
Bad-33.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, onion sets is a £45K/yr Amazon United Kingdom market (106K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Mar–Apr–May. Verdict: Worth a look — 53/100.
Data updated Jul 26, 2026 · scored weekly · How we score niches
onion sets market data
- Units sold / yr
- 10K–13K
- avg 250–500/product
- Revenue / yr
- £78K–£98K
- units × avg price
- Conversion rate
- 5.4%
- Avg BSR
- #1,575
- Page quality
- 0%
- Prime
- 51%
- Sponsored
- 84%
- Out of stock
- 63.0%
- Avg brand age
- 54 months
- Avg seller age
- 195 days
Competition & brand share
Clicks spread well past the top 5 (31% combined) — an open shelf where new products get seen.Brands
17 rising
Sellers
22
Top-5 brand share
71%
Top 20: 100%
Top-5 click share
31%
Top 20: 68%
Open market
24%
- Carbeth Plants29%
- schone15%
- Botanical Bliss10%
- Schone Products (UK)10%
- Jamieson Brothers7%
- The Seed Shed6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -33.0% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 7.9×
Top onion sets search terms
- onion sets59K/yr
- onion sets for planting now uk22K/yr
- onion bulbs for planting uk5K/yr
- onion bulbs5K/yr
- onions sets for planting uk4K/yr
- winter onion sets3K/yr
- winter onions sets2K/yr
- onion sets autumn planting3K/yr
- winter onion sets for planting now uk3K/yr
Top onion sets 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
2 x 20 Twin Pack Onions- Centurion & Red Baron- High Yielding Mild to Strong Flavour- Perfect to Cultivate in Your Beautiful Garden - RHS Award of Garden Merit
Schone Products (UK)£9.654.0★418 rev
Carbeth Plants Onion Sets 100 x Setton Vegetable Bulbs
Carbeth Plants£8.964.6★45 rev
Carbeth Plants Yellow Onion Sets Centurion 250g
Carbeth Plants£7.114.6★116 rev
50 x Onion Sets Stuttgarter Bumper Pack RHS Award of Garden Merit Easiest and Quickest Way to Grow Onions Sweet Mild Taste - Great to Grow in Your Beautiful Garden
schone£9.074.2★178 rev
Johnsons Onion Ailsa Craig
Johnsons£2.684.5★187 rev
Newest
by launch date
Onion Seeds 6 in 1 Variety Pack Ailsa Craig Brunswick Rijnsburger Noordhollandse Strogele Ishikura White Lisbon Heirloom Non-GMO Onion Seeds Variety Pack
Simply Garden£7.030 rev
Onion Sets Pack of 50 Grow Your Own Vegetables Outdoor Planting (Stuttgarter)
Bryncir Garden Centre£11.085 rev
Onion Sets Pack of 50 Grow Your Own Vegetables Outdoor Planting (Sturon)
Bryncir Garden Centre£10.765 rev
Marshalls Garden Rumba Heat-Prepared Onion Sets Spring Planting Approx 65-75 Sets
marshalls garden£3.957 rev
Carbeth Plants Pink Panther 250g Onion Sets for Planting - Easy to Grow Mild Flavoured Onion Bulbs for Gardens & Allotments - High Yielding Crops Perfect for Salads Cooking & Long Storage
Carbeth Plants£6.985 rev
Trending
90-day click momentum
Carbeth Plants - Onion Sets Karmen 100 x Vegetable Bulbs - 500g Red Spring Planting Quality Sets - Reliable High Yielding Variety Easy to Grow - Perfect for Outdoor UK Growing
Carbeth Plants£8.914.6★
Onion Sets Pack of 50 Grow Your Own Vegetables Outdoor Planting (Stuttgarter)
Bryncir Garden Centre£11.082.2★
Onion Sets Pack of 50 Grow Your Own Vegetables Outdoor Planting (Sturon)
Bryncir Garden Centre£10.762.2★
Onion Seeds 6 in 1 Variety Pack Ailsa Craig Brunswick Rijnsburger Noordhollandse Strogele Ishikura White Lisbon Heirloom Non-GMO Onion Seeds Variety Pack
Simply Garden£7.030.0★
Johnsons Onion Ailsa Craig
Johnsons£2.684.5★
What buyers say about onion sets
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Growing well”
“Good value for money”
“As described”
“Keep well watered and fed”
“produces large onions that store really well”
“Onions perfect”
“Clear instructions on the packet”
“Very good, they all grew despite the drought”
“Easy to grow”
What buyers complain about
“The onion sets were of a terrible quality - worse I have ever seen”
“moisture got in”
“not fit to plant”
“The price is high”
“Although some bulbs looked small”
“20% of them are dead or soft”
“bore no resemblance to their advert”
“So not a red”
“Waste of money and effort”
“second packet after a MONTH just very thin SHOOTS about two inches high”
Top return reasons
Common questions
- Is onion sets profitable to sell on Amazon United Kingdom?
- The niche generates £45K/yr across 57 tracked products. 0 of 16 products launched in the last 360 days are still selling. 90-day search growth is -33.0%. Flapen's verdict: Worth a look (53/100).
- How competitive is the onion sets niche?
- 17 brands and 22 sellers compete. The top 5 products take 31% of clicks and top 5 brands hold 71% of demand.
- What do buyers complain about in onion sets?
- Top complaints mined from reviews: Quality-Overall, Moist/Dry, Plant Growth. The return rate is 0.0%.
- When does demand for onion sets peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 7.9× the quietest.
- What does it cost to enter the onion sets niche?
- Listings span £2.33–£17.25; the average listing price is £7.83 (sweet spot $15–$100). The average incumbent carries 84 reviews — the moat a new listing must climb.