Potassium nitrate
Potassium nitrate for sale on Ireland's largest auction and classifieds sites
Growmore special blend - growmore, - £24.99
Elixir special blend • Growmore multi purpose • Plant food even - Free postage - New and Used
Elixir special blend • Growmore multi purpose • Plant food even - Free postage - New and Used
Organic 10ltr liquid seaweed - liquid, - £29.95
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Organic 20ltr liquid seaweed - liquid, - £49.95
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Organic 5ltr liquid seaweed - organic, - £23.95
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
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Elixir gardens high - gardens, - £89.89
Bumper crop high • Potassium soluble fertiliser • Feed encourage abundant - Free postage - New and Used
Bumper crop high • Potassium soluble fertiliser • Feed encourage abundant - Free postage - New and Used
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48 listings · from £2.79 · avg £41.7
Browse 48 potassium nitrate listings currently in our index. Prices range from £2.79 to £599.99, with an average of £41.7. 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 →
Nutrigrow pre seeder - nutrigrow, lawn - £34.99
Pre seeder • Quality npk fertiliser • Which ideal use - Free postage - New and Used
Pre seeder • Quality npk fertiliser • Which ideal use - Free postage - New and Used
Nutrigrow growmore tree plant - tree,, - £29.99
Nutrigrow growmore highly • Effective general purpose • Npk granular fertiliser - Free postage - New and Used
Nutrigrow growmore highly • Effective general purpose • Npk granular fertiliser - Free postage - New and Used
Ivisons 696 pre seed - 696, - £34.99
Ivisons pre seed • Please note bags • Under 20kg are - Free postage - New and Used
Ivisons pre seed • Please note bags • Under 20kg are - Free postage - New and Used
Liquid seaweed fertiliser 5l - liquid, - £16.99
Plant feed • Simply dilute apply • Enjoy stronger healthier - Free postage - New and Used
Plant feed • Simply dilute apply • Enjoy stronger healthier - Free postage - New and Used
Liquid seaweed fertiliser - liquid, - £23.99
Seaweed fertiliser • 200 professional strength • Plant feed organic - Free postage - New and Used
Seaweed fertiliser • 200 professional strength • Plant feed organic - Free postage - New and Used
20kg paddock fertiliser - 20kg, - £39.99
This product ideal • General maintenance feed • Grass intensive hay - Free postage - New and Used
This product ideal • General maintenance feed • Grass intensive hay - Free postage - New and Used
10ltr liquid seaweed - 10ltr, - £29.95
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Miracle gro garden feeder - gro, hose - £17.99
- Free postage - New and Used
- Free postage - New and Used
20ltr organic seaweed liquid - 20ltr, - £49.95
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Organic seaweed liquid - seaweed, - £11.95
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Granulated fertilizer for - granulated, - £13.90
Enhance vitality your • Conifers thuja cypress • Evergreen flora our - Free postage - New and Used
Enhance vitality your • Conifers thuja cypress • Evergreen flora our - Free postage - New and Used
Miracle gro feeder hose - miracle, - £17.99
Use soluble feeds • Plant food giving • You flexibility choose - Free postage - New and Used
Use soluble feeds • Plant food giving • You flexibility choose - Free postage - New and Used
Vitax blood fish bone plant - vitax, - £9.99
Made from natural • Ingredients this fertiliser • Rich nitrogen phosphorus - Free postage - New and Used
Made from natural • Ingredients this fertiliser • Rich nitrogen phosphorus - Free postage - New and Used
Osmocote topdress slow release - slow, - £4.59
Containing fast slow • Release nitrogen phosphorous • Releases correct amount - Free postage - New and Used
Containing fast slow • Release nitrogen phosphorous • Releases correct amount - Free postage - New and Used
Fertilizer for conifers - -, 1.2 - £13.60
Type fertiliser enhance • Vitality your conifers • Evergreen flora our - Free postage - New and Used
Type fertiliser enhance • Vitality your conifers • Evergreen flora our - Free postage - New and Used
Liquid seaweed fertiliser - liquid, - £53.99
Organic seaweed fertiliser • Feed premium kelp • Extract natural plant - Free postage - New and Used
Organic seaweed fertiliser • Feed premium kelp • Extract natural plant - Free postage - New and Used
Carnivorous plant food - food, spray - £9.99
Thiscarnivorous plant fertiliser • Spray support healthy • Growth while respecting - Free postage - New and Used
Thiscarnivorous plant fertiliser • Spray support healthy • Growth while respecting - Free postage - New and Used
Osmocote slow release - slow, - £20.99
Many changes over • Years butone fertilizer • Ingredient always osmocote - Free postage - New and Used
Many changes over • Years butone fertilizer • Ingredient always osmocote - Free postage - New and Used
Doff growmore plant feed multi - growmore, - £5.50
Doff growmore multi • Purpose plant food • Fertiliser balanced npk - Free postage - New and Used
Doff growmore multi • Purpose plant food • Fertiliser balanced npk - Free postage - New and Used
Shogun plant nutrients sumo - plant, - £414.95
Calmag vital many • Plant processes synthesis • Carbohydrates chlorophyll production - Free postage - New and Used
Calmag vital many • Plant processes synthesis • Carbohydrates chlorophyll production - Free postage - New and Used
Citrus food 175ml - food, plant - £5.44
Using baby bio • Citrus food potassium • Rich feed will - Free postage - New and Used
Using baby bio • Citrus food potassium • Rich feed will - Free postage - New and Used
Organic fertilizer for - £13.50
Organic vegetable seedling • Fertilizer high quality • Fertilizing vegetables seedlings - Free postage - New and Used
Organic vegetable seedling • Fertilizer high quality • Fertilizing vegetables seedlings - Free postage - New and Used
Ericaceous high performance - ericaceous, - £6.79
Liquid plant food • Ericaceous high performance • Litre fast release - Free postage - New and Used
Liquid plant food • Ericaceous high performance • Litre fast release - Free postage - New and Used
5ltr organic seaweed liquid - seaweed, - £23.95
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Multi mite ltr - mite, - £11.95
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Multi mite seaweed • Suitable all plants • You unlock power - Free postage - New and Used
Jarder month lawn feed - lawn, - £18.95
Jarder month lawn • Feed fertiliser npk • Contains industry leading - Free postage - New and Used
Jarder month lawn • Feed fertiliser npk • Contains industry leading - Free postage - New and Used
Organic extra fertiliser - organic, 44 - £34.99
Our exclusive super • Concentrated organic fertiliser • Light easy use - Free postage - New and Used
Our exclusive super • Concentrated organic fertiliser • Light easy use - Free postage - New and Used
Osmocote pro m - pro, 12-14 - £14.29
Osmocote pro 14m • Especially suitable autumn • Spring potting many - Free postage - New and Used
Osmocote pro 14m • Especially suitable autumn • Spring potting many - Free postage - New and Used
Growth technology chilli - technology, focus - £6.99
Chilli pepper focus • Expertly formulated optimum • Growth chillies peppers - Free postage - New and Used
Chilli pepper focus • Expertly formulated optimum • Growth chillies peppers - Free postage - New and Used
Miracle gro evergreen water - miracle, - £9.89
Feeds 200m2 miracle • Gro evergreen water • Soluble lawn food - Free postage - New and Used
Feeds 200m2 miracle • Gro evergreen water • Soluble lawn food - Free postage - New and Used
Liquid seaweed fertiliser - fertiliser, – - £54.99
Ultra concentrated liquid • Seaweed fertiliser 400 • Feed maximum value - Free postage - New and Used
Ultra concentrated liquid • Seaweed fertiliser 400 • Feed maximum value - Free postage - New and Used
Ericaceous high performance - ericaceous, - £10.68
Westland ericaceous high • Performance liquid plant • Food specially tailored - Free postage - New and Used
Westland ericaceous high • Performance liquid plant • Food specially tailored - Free postage - New and Used
Growth technology plant - technology, - £6.25
Growth technology citrus • Focus balanced nutrient • Rich liquid specifically - Free postage - New and Used
Growth technology citrus • Focus balanced nutrient • Rich liquid specifically - Free postage - New and Used
Ionic boost litre - pk, - £12.45
Boost ideal addition • Ionic bloom but • Can also used - Free postage - New and Used
Boost ideal addition • Ionic bloom but • Can also used - Free postage - New and Used
Jarder moss killer - killer, for - £17.95
Jarder moss killer • Lawns specially formulated • Lawn feed boost - Free postage - New and Used
Jarder moss killer • Lawns specially formulated • Lawn feed boost - Free postage - New and Used
Universal garden fertiliser - garden, - £14.99
Complete fertiliser use • All over garden • Sensational superior results - Free postage - New and Used
Complete fertiliser use • All over garden • Sensational superior results - Free postage - New and Used
Baby bio houseplant food - bio, - £2.79
Item form liquid • Coverage indoor plants • Gives your houseplants - Free postage - New and Used
Item form liquid • Coverage indoor plants • Gives your houseplants - Free postage - New and Used
Westland ericaceous plant - westland, - £9.49
Month slow release • Feed ensures your • Blooms are long - Free postage - New and Used
Month slow release • Feed ensures your • Blooms are long - Free postage - New and Used
Westland ericaceous specialist - westland, - £9.49
Acid loving plants • Westland ericaceous plant • Food granules are - Free postage - New and Used
Acid loving plants • Westland ericaceous plant • Food granules are - Free postage - New and Used
Westland fish blood - bone, all - £18.98
Westland fish blood • Bone plant food • 8kg tub this - Free postage - New and Used
Westland fish blood • Bone plant food • 8kg tub this - Free postage - New and Used
Paddock fertiliser 10 - fertiliser, 20-10-10 - £599.99
You require more • Balanced amount fertiliser • Ideal bulk bag - Free postage - New and Used
You require more • Balanced amount fertiliser • Ideal bulk bag - Free postage - New and Used
Growlands organic liquid - organic, - £9.99
Growlands seaweed ready • Made foliar feeding • Spray - Free postage - New and Used
Growlands seaweed ready • Made foliar feeding • Spray - Free postage - New and Used
1ltr organic seaweed liquid - 1ltr, - £11.95
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Might not obvious • Choice but seaweed • Makes ideal fertiliser - Free postage - New and Used
Try this: large garden storage box | tall planter plastic | plant cells | wooden garden planters trellis | wooden garden trellis arch | plant obelisk | plastic garden tray | small oak barrel | square plastic plant pots | plastic planters trough
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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 48 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 £2.79, while premium listings can reach £599.99 — giving you a wide budget spread to work with. The average price of £41.7 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.