Best Water Plant Fertilisers Deals Online in the UK (24 Deals Found)

Last Updated - 29/10/2026 Sort By:

Best Choice
velda

New
Velda Growth Balls x50, Water Lily Fertiliser Tablets & Pond Plant Food | Aquatic Fertiliser Tablets, Water Lily Food, S
FEEDS RIGHT AT THE ROOTS - Press the balls into the pond soil next to the roots, so nutrients, trace elements and minera

£10.49 £10.79
ARKA

New
Plant Fertiliser Aquarium 118 ml - Plants Green Complete Aquatic Feed | for freshwater aquariums, complete fertiliser wi
Lush green growth in small tanks – ARKA Plants Green supplies aquatic plants with iron, vitamins and trace elements. For

£6.74
New
Hydroponic Houseplant Fertiliser Water LECA Semi Hydro Growing 1L
Hydroponic Houseplant Fertiliser for Water & Semi-Hydro Systems Liquid Nutrient for LECA, Clay Pebbles and Soil-Free Ind

£16.99
Miracle-Gro

New
Miracle-Gro® All Purpose Soluble Plant Food, 2kg
Special mix of 10 nutrients to ensure healthy growth

£13.20 £13.99
New
13-0-46 Nitrogen Potassium Fertiliser TOP DRESSING or WATER SOLUBLE NPK UK
13-0-46 Nitrogen and Potassium Fertiliser 200g to 5kg.

£4.99
Best Value
MARPHYL

New
MARPHYL All-Purpose Plant Food – Organic Nutrient-Rich Fertilizer & Soil Enhancer for Indoor & Outdoor Flowers, Vegetabl
Provides balanced macro and micronutrients for healthy plant growth.

£14.90 £19.99
AquaDesign

New
AquaDesign PLANT+ 500ML Aquarium Plant "all in one" Complete Liquid Fertiliser
Adds essential nutrients for healthy plant growth

£10.99
35% Off

New
Miracle-Gro All Purpose Soluble Plant Food Feed Tub 2kg Plant Growth Fertilisers
The evenly balanced nutrients contained in this plant food are ideal for flowers, fruit and vegetables--in fact, for eve

£16.50 £25.49
29% Off
Baby Bio

New
Organic Baby Bio Liquid Houseplant Food Concentrated Nitrogen Feed 175ml
HEALTHY PLANTS: Gives your houseplants a healthier look, with lush green leaves and vibrantly coloured flowers

£3.99 £5.65
New
AquaDesign PLANT+ Complete Liquid Aquarium Plant Fertiliser Food 2500ml
AquaDesign PLANT+ is specially formulated to support healthy, vibrant aquatic plant growth.

£19.99
Growth Technology

New
Growth Technology Hydroponic Houseplant Focus 1 Litre - Full spectrum nutrient solution
Easy to use

£9.99
API

New
API Leaf Zone Plant Fertilizer for Freshwater Aquariums, 473 ml Bottle
Contains one (1) API LEAF ZONE Freshwater Aquarium Plant Fertilizer 473 ml Bottle

£12.17
New
SULPHATE OF IRON - WATER SOLUBLE LAWN TONIC FERTILISER FOR GREENER GRASS LAWN
Iron Sulphate is an Iron rich and long-lasting fertiliser that will encourage strong growth and healthy dark green grass

£6.49
Newpie

New
Root Tabs for Live Aquarium Plants, Freshwater Plant Fertilizer - 100 Count (1)
Complete Balanced Aquatic Nutrient Formula: Our aquarium fertiliser tabs feature a scientifically calibrated full-spectr

£14.99
New
Organic Hydrogel Water Storing Crystals 1kg - Garden Plant Pot & Vegetable
Hydrogel Garden – Water Retention, Less Irrigation, Greener Lawn.

£20.49
GROWLANDS

New
Growlands Indoor House Plant Food - 300 ml - Indoor Plant Liquid Spray Fertilizer - With Seaweed Extract - Designed For
Ready-to-use foliar mist spray.

£12.99
New
AquaDesign PLANT+ Complete Liquid Aquarium Plant Fertiliser Food 5000ml
AquaDesign PLANT+ is specially formulated to support healthy, vibrant aquatic plant growth.

£28.99
New
HYDROGEL WATER STORING GARDENING ORGANIC 2KG FOR PLANTS AND VEGETABLE CULTURES
Hydrogel Garden – Water Retention, Less Irrigation, Greener Lawn.

£26.49
New
AquaDesign PLANT LITE 5000ML Phosphate Free Liquid Aquarium Plant Fertiliser
Fish waste breaks down into phosphate and nitrates.

£28.99
New
Complete Fertiliser Kit for Aquarium Plants — PPS-Pro | Mixing Bottles, Syringes
After months of searching for a proper planted tank fertiliser kit and never finding one good enough, I built my own.

£41.00
New
AquaDesign Houseplant Complete 500ML Concentrated Indoor Plant Fertiliser
AquaDesign plant care.

£10.99
13% Off

New
8L Houseplant Potting Mix Compost, Peat Free Indoor Plant Soil with Worm Casts
8L Houseplant Potting Mix Compost, Peat Free Indoor Plant Soil with Worm Casts.

£12.99 £14.99
New
IRON SULPHATE TONIC GREENER GRASS TURF LAWN FEED FOOD FERTILISER WATER SOLUBLE
Iron Sulphate is an Iron rich and long-lasting fertiliser that will encourage strong growth and healthy dark green grass

£24.99
New
IRON SULPHATE- WATER SOLUBLE LAWN TONIC FERTILISER FOR GREENER GRASS LAWN
Iron Sulphate is an Iron rich and long-lasting fertiliser that will encourage strong growth and healthy dark green grass

£6.49

24 Water Plant Fertilisers deals are available from: Amazon, eBay stores, starting from £3.99.
The biggest discount we found is 35% on Miracle-Gro All Purpose Soluble Plant Food Feed Tub 2kg Plant Growth Fertilisers at eBay.
The lowest price we found is £3.99 while the highest is £41.00.
Prices for the best Water Plant Fertilisers deals average at £15.70.
Last updated on October 29, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Water Plant Fertilisers.