For Sale UK

Potassium nitrate

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Potassium nitrate for sale on largest auction and classifieds sites

Home / Plants & Gardening / Potassium nitrate refurbished & used for sale | For Sale UK
Elixir gardens high potassium - gardens,

Elixir gardens high potassium - gardens,

£89.99
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Welsh fresh sphagnum - welsh,

Welsh fresh sphagnum - welsh,

£34.00
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Emerald harvest king kola - emerald,

Emerald harvest king kola - emerald,

£37.10
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Jarder lawn feed - jarder, fertiliser

Jarder lawn feed - jarder, fertiliser

£26.95
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Growmore special blend - growmore,

Growmore special blend - growmore,

£23.49
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Miracle gro all - gro, plant

Miracle gro all - gro, plant

£6.95
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All purpose plant food - purpose,

All purpose plant food - purpose,

£7.58
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Osmocote pro m - pro, 12-14

Osmocote pro m - pro, 12-14

£18.99
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Osmocote slow release - slow,

Osmocote slow release - slow,

£39.99
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Miracle gro feeder unit - miracle-gro,

Miracle gro feeder unit - miracle-gro,

£18.95
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Miracle gro plant feeder - gro,

Miracle gro plant feeder - gro,

£18.00
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Miracle gro autumn lawn care - miracle-gro,

Miracle gro autumn lawn care - miracle-gro,

£26.99
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Liquid seaweed fertiliser - liquid,

Liquid seaweed fertiliser - liquid,

£23.99
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Organic seaweed liquid - seaweed,

Organic seaweed liquid - seaweed,

£14.95
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Jarder month lawn feed - 6,

Jarder month lawn feed - 6,

£18.95
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Granulated fertilizer for - granulated,

Granulated fertilizer for - granulated,

£13.90
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Osmocote slow release plant - slow,

Osmocote slow release plant - slow,

£16.99
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Miracle gro all purpose - miracle,

Miracle gro all purpose - miracle,

£7.48
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Westland sulphate potash - sulphate, of

Westland sulphate potash - sulphate, of

£10.95
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Chempak tomato plant - chempak, feed

Chempak tomato plant - chempak, feed

£10.99
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Osmocote slow release - osmocote,

Osmocote slow release - osmocote,

£5.99
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Osmocote slow release - osmocote,

Osmocote slow release - osmocote,

£16.99
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Miracle gro continuous - continuous, release

Miracle gro continuous - continuous, release

£7.45
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Baby bio fertiliser - bio,

Baby bio fertiliser - bio,

£3.40
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Cow manure pellets 10l - manure,

Cow manure pellets 10l - manure,

£24.99
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Liquid seaweed fertiliser 5l - seaweed,

Liquid seaweed fertiliser 5l - seaweed,

£16.99
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Liquid seaweed fertiliser 20l - liquid,

Liquid seaweed fertiliser 20l - liquid,

£53.99
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Citrus food 175ml - citrus,

Citrus food 175ml - citrus,

£4.05
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Ionic coco bloom - ionic, hydroponic

Ionic coco bloom - ionic, hydroponic

£52.69
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Osmocote pro slow release - pro,

Osmocote pro slow release - pro,

£18.99
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Canna coco nutrient - a+b, 10l

Canna coco nutrient - a+b, 10l

£59.20
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Carnivorous plant food spray - plant,

Carnivorous plant food spray - plant,

£9.99
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30l premium liquid seaweed - premium,

30l premium liquid seaweed - premium,

£68.99
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Miracle gro continuous release - miracle-gro,

Miracle gro continuous release - miracle-gro,

£7.98
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Biobizz topmax organic plant - -,

Biobizz topmax organic plant - -,

£205.98
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Gardennova citrus tree liquid - gardennova,

Gardennova citrus tree liquid - gardennova,

£8.88
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Nutrigrow growmore tree - growmore, plant

Nutrigrow growmore tree - growmore, plant

£29.99
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Miracle gro feeder - miracle-gro,

Miracle gro feeder - miracle-gro,

£18.99
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Organic 5ltr liquid seaweed - liquid,

Organic 5ltr liquid seaweed - liquid,

£28.95
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5ltr organic seaweed - seaweed, liquid

5ltr organic seaweed - seaweed, liquid

£28.95
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Miracle gro premium fast - premium,

Miracle gro premium fast - premium,

£8.90
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Liquid seaweed fertiliser - liquid, 6l

Liquid seaweed fertiliser - liquid, 6l

£29.99
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Autumn fertilizer for - fertilizer, lawns

Autumn fertilizer for - fertilizer, lawns

£13.60
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30l premium liquid seaweed - premium,

30l premium liquid seaweed - premium,

£129.99
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Organic baby bio liquid - organic,

Organic baby bio liquid - organic,

£5.79
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Organic 10ltr liquid seaweed - organic,

Organic 10ltr liquid seaweed - organic,

£39.95
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Citrus food 175ml - citrus,

Citrus food 175ml - citrus,

£4.08
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Vitax cacti succulent house - vitax, &

Vitax cacti succulent house - vitax, &

£7.50
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Doff growmore plant feed - doff,

Doff growmore plant feed - doff,

£5.50
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Baby bio citrus food - bio,

Baby bio citrus food - bio,

£4.43
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Gardennova peace lily - gardennova,

Gardennova peace lily - gardennova,

£8.88
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Canna coco b - a, plant

Canna coco b - a, plant

£15.85
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Fish blood bone - blood, &

Fish blood bone - blood, &

£7.99
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Gardennova anthurium liquid - gardennova,

Gardennova anthurium liquid - gardennova,

£8.88
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Growth technology chilli and - growth,

Growth technology chilli and - growth,

£10.08
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Levington sulphate potash - levington, of

Levington sulphate potash - levington, of

£9.99
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Gardennova monstera liquid - gardennova,

Gardennova monstera liquid - gardennova,

£8.88
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Vitax blood fish - vitax, and

Vitax blood fish - vitax, and

£9.99
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All purpose plant - plant, food

All purpose plant - plant, food

£7.62
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Biobizz fish mix organic - ,

Biobizz fish mix organic - ,

£13.12
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Citrus food 175ml plant - citrus,

Citrus food 175ml plant - citrus,

£4.05
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Baby bio houseplant - baby,

Baby bio houseplant - baby,

£3.99
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Easy life potassium - life, 250ml

Easy life potassium - life, 250ml

£8.88
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Citrus food 175ml - 175ml,

Citrus food 175ml - 175ml,

£4.12
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Miracle gro premium fast - miracle-gro,

Miracle gro premium fast - miracle-gro,

£7.30
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Westland fish blood - westland, bone

Westland fish blood - westland, bone

£19.99
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Westland organic seaweed - westland, 1l

Westland organic seaweed - westland, 1l

£9.90
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Organically alive fertiliser - organically,

Organically alive fertiliser - organically,

£5.72
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Ionic boost litre - boost,

Ionic boost litre - boost,

£12.45
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Mineral fertilizer for - mineral,

Mineral fertilizer for - mineral,

£15.99
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Growth technology herb focus - growth,

Growth technology herb focus - growth,

£6.85
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Citrus focus plant - , 100ml

Citrus focus plant - , 100ml

£6.35
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Baby bio citrus plant - baby,

Baby bio citrus plant - baby,

£6.99
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Growth technology chilli focus - technology,

Growth technology chilli focus - technology,

£6.99
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Baby bio houseplant food - bio,

Baby bio houseplant food - bio,

£2.67
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Miracle gro continuous release - miracle-gro,

Miracle gro continuous release - miracle-gro,

£5.69
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Green plants mineral gel - green,

Green plants mineral gel - green,

£8.90
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Chilli pepper focus - , liquid

Chilli pepper focus - , liquid

£11.95
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Osmocote topdress slow release - topdress,

Osmocote topdress slow release - topdress,

£4.29
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Doff growmore plant feed - growmore,

Doff growmore plant feed - growmore,

£6.98
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Growlands organic liquid - growlands,

Growlands organic liquid - growlands,

£9.99
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Bamboo fertiliser specialist - bamboo, fertiliser.

Bamboo fertiliser specialist - bamboo, fertiliser.

£15.95
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Mineral fertilizer for house

Mineral fertilizer for house

£8.95
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Liquid seaweed fertiliser - fertiliser, 1l

Liquid seaweed fertiliser - fertiliser, 1l

£13.99
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Miracle gro continuous release - miracle-gro,

Miracle gro continuous release - miracle-gro,

£7.53
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Liquid fertiliser fast - fertiliser,

Liquid fertiliser fast - fertiliser,

£4.99
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Organic fertilizer for

Organic fertilizer for

£13.50
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Biobizz grow bloom 2 - biobizz,

Biobizz grow bloom 2 - biobizz,

£12.90
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Gardennova citrus tree liquid - gardennova,

Gardennova citrus tree liquid - gardennova,

£9.99
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Westland seaweed enhanced - seaweed,

Westland seaweed enhanced - seaweed,

£18.99
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Gardennova peace lily - gardennova,

Gardennova peace lily - gardennova,

£9.99
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Organic extra fertiliser - organic,

Organic extra fertiliser - organic,

£34.99
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Gardennova money tree - money, liquid

Gardennova money tree - money, liquid

£8.88
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Bio flores canna - -,

Bio flores canna - -,

£15.35
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Athena nutrients pro - athena,

Athena nutrients pro - athena,

£79.95
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Organic ltr liquid - 2.5,

Organic ltr liquid - 2.5,

£20.95
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📊96 listings · from £2.67 · avg £20.19
⚠️ These listings were last updated more than 22 days ago. Search for fresh listings

Browse 96 potassium nitrate listings currently in our index. Prices range from £2.67 to £205.98, with an average of £20.19. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about potassium nitrate →

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Everything you need to know about potassium nitrate

Whether you are looking for a brand-new or second-hand potassium nitrate, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £2.67, while premium listings can reach £205.98 — giving you a wide budget spread to work with. The average price of £20.19 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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