Best Plant Fertilizer 20 20 20 Deals Online in the UK (24 Deals Found)

Last Updated - 04/10/2026 Sort By:

Best Choice
Go Garden

New
Go Garden NPK 20 20 20 Water Soluble Fertilizer for Plants Growth, Fertilizer for Home Plants 100% Water Soluble (400) P
fertilizer for flowering plants Rich in all essential plant nutrients. Apply 1/2 tsp in 1 liter of water every 15 days i

£18.49
6X

New
6X strength Pelleted Chicken Manure. 1 Bag of 20KG ( 1 X 20KG )
100% natural fertilizer

£24.99
New
ORGANIC Seaweed Fertilizer Cold Pressed Kelp Natural Plant Food Garden Nutrient
More than just a fertilizer, this is a powerful plant biostimulant, designed to transform your garden from the ground up

£94.99
Best Value
Miracle-Gro

New
Miracle-Gro All Purpose Plant Food 1kg PLUS 20% Free
Miracle Gro All Purpose Plant Food 1Kg Plus 20 Free

£7.33 £8.69
New
Organic Worm Castings Vermicompost Soil Improver Plant Food Organic Fertiliser
✅ 100% Organic Soil Improver & Plant Food.

£12.95
Miracle-Gro

New
Miracle Gro All Purpose Soluble Plant Food 1kg + 20% Extra Free
For stunning displays feed every two weeks from March to September

£9.28
11% Off
envii

New
envii SeaFeed Xtra – Organic Liquid Seaweed Fertiliser, Outdoor Plant Food Ideal for all Plants, Lawns, Gardens and Hous
Boosts Plant Growth & Crop Yields - Natural Seaweed fertiliser that enhances strong & healthy plant growth, promotes lus

£32.95 £36.95
New
Special O fertilizer spikes 20 Sticks GUANO Anti Soil Pests plants, pałeczki O
"O" special fertilizing sticks are intended for nourishing plants weakened after attacks of all kinds of pests.

£4.99
Generic

New
Liquid Seaweed Fertiliser 20L Concentrate – Makes up to 2,000L Feed – High Strength Organic Plant Food for Faster Growth
MAKES UP TO 2,000L OF FEED – Ultra-concentrated 1:200 formula delivers exceptional coverage, lasting significantly longe

£55.99
New
Rootgrow Gel RHS Fertiliser for bareroot hedge + pot plants hedging 5 sizes!
Take a glance at our usage grid to see which one you need! The benefits of Rootgrow mycorrhizal fungi When planted with

£18.99
TRANS - PAL

New
Autumn Garden Fertilizer PK 9-20 with Calcium Magnesium Sulphur – Strengthens Plants, Winter Protection & Early Spring G
Complete Autumn Care – Specially formulated PK 9-20 fertilizer enriched with calcium, magnesium and sulphur for healthy

£14.99
onlyfly

New
Onlyfly 6X Pelleted Chicken Manure Multi Purpose Fertiliser - 20kg Bag New Packaging (Green)

£25.95
New
GROWMOOR MULTI PURPOSE SOIL COMPOST FLOWER FERTILISER FOR GARDEN POTTING MIX NEW
It also makes more flowers and gives a longer plant life.

£8.99
Sunshine Renewables UK

New
Liquid Seaweed Fertiliser – Professional Strength Concentrated Plant Feed (1:200) – Organic Feed for Gardens (20L)
his highly concentrated 1:200 formula allows a single 2.5L container to produce up to 500 litres of nutrient-rich plant

£54.99
New
5ltr Organic Seaweed Liquid Concentrate MULTI MITE - ALL Plant FEED Fertiliser
It might not be an obvious choice, but seaweed makes an ideal fertiliser for your plants.

£28.95
SuperGift.com

New
20L Miracle Gro Moisture Control Compost, Peat Free Multi-Purpose Fertilisers, Gardening Soils for Outdoor and Indoor Pl
A premium compostthat caters the needs of all mature plants in pots and hanging baskets

£10.99
New
Organic 10Ltr Liquid Seaweed Concentrate MULTI MITE - ALL Plant FEED Fertiliser
✅ WITH MULTI-MITE SEAWEED SUITABLE FOR ALL PLANTS - You'll unlock the Power of the Sea for your plants! This Dynamite Fe

£39.95
New
Root & Bloom premium slow release plant food and fertiliser
This formula is crafted on the Cornish coast using pure, unadulterated plant and mineral inputs.

£120.50
New
20-10-10 PADDOCK HORSE PONY FIELDS FERTILISER 25KG BAG - GREAT VALUE
This product is ideal for general maintenance or to feed grass for intensive hay production and grazing.

£32.95
New
MIRACLE GRO ALL PURPOSE COMPOST ENRICHED PREMIUM SOIL POTTED GARDEN FLOWER PLANT
Ideal for potted plants, flower beds, and general garden use, it provides essential minerals and organic matter to suppo

£10.99
33% Off

New
Vitax Acer Liquid Plant Feed Fertiliser Maple Tree Containers Topiary 1L Bottle
Organic, and one feeds lasts a whole season.

£8.99 £13.49
New
2.5ltr Organic Seaweed Liquid Concentrate MULTI MITE - ALL Plant FEED Fertiliser
It might not be an obvious choice, but seaweed makes an ideal fertiliser for your plants.

£20.95
New
ORGANIC 20Ltr Liquid Seaweed Concentrate MULTI MITE - ALL Plant FEED Fertiliser
✅ WITH MULTI-MITE SEAWEED SUITABLE FOR ALL PLANTS - You'll unlock the Power of the Sea for your plants! This Dynamite Fe

£69.95
New
20ltr Organic Seaweed Liquid Concentrate MULTI MITE - ALL Plant FEED Fertiliser
It might not be an obvious choice, but seaweed makes an ideal fertiliser for your plants.

£69.95

24 Plant Fertilizer 20 20 20 deals are available from: Amazon, eBay stores, starting from £4.99.
The biggest discount we found is 33% on Vitax Acer Liquid Plant Feed Fertiliser Maple Tree Containers Topiary 1L Bottle at eBay.
The lowest price we found is £4.99 while the highest is £120.50.
Prices for the best Plant Fertilizer 20 20 20 deals average at £33.34.
Last updated on October 4, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Plant Fertilizer 20 20 20.