Best Water Plant Fertilisers Deals Online in the UK (25 Deals Found)

Last Updated - 09/05/2026 Sort By:

Best Choice
velda

New
Velda Growth Balls - Water Plant Fertiliser Balls for Pond Plants & Water Lilies - Aquatic Plant Food Root Fertiliser -
LUSH POND PLANT GROWTH - Targeted fertiliser for water lilies and marsh plants, supporting strong roots and vibrant bloo

£11.94
Best Value
Miracle-Gro

New
Miracle Gro All Purpose Concentrated Liquid Plant Food, 800ml
Feeds all types of plants instantly after application

£3.97 £6.49
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

£17.95 £25.49
39% Off
Miracle-Gro

New
Miracle Gro All Purpose Concentrated Liquid Plant Food, 800ml
Feeds all types of plants instantly after application

£3.97 £6.49
New
MIRACLE-GRO WATER SOLUBLE PLANT FOOD TUB HEALTHY PLANT GROWTH 2KG ALL PURPOSE
500ML HOUSE PLANT FEED FOOD CONCENTRATE HOUSEPLANT GROWS NUTRIENTS FERTILISER. Miracle-Gro Water Soluble Plant Feed 2kg.

£21.84 £22.99
velda

New
Velda Super Growth Ball XL Fertiliser Balls for Pond Plants - Aquatic Plant Fertiliser for Water Lilies & Marsh Plants -
PROMOTES STRONG GROWTH - Special fertiliser balls for water lilies and marsh plants, encouraging lush growth and vibrant

£14.25
velda

New
Velda Super Growth Ball XL Fertiliser Balls for Pond Plants - Aquatic Plant Fertiliser for Water Lilies & Marsh Plants -
PROMOTES STRONG GROWTH - Special fertiliser balls for water lilies and marsh plants, encouraging lush growth and vibrant

£14.25
New
Masterblend Universal Fertiliser 20-20-20 Water Soluble NPK + Microelements 100g
✔ Fully water soluble – easy to use. • 100 g (better value per gram).

£10.99
Miracle-Gro

New
Miracle-Gro All Purpose Water Soluble Plant Food Tub, 2 kg
Grows plants twice as big (versus unfed plants)

£17.98
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. Wh

£41.00
Miracle-Gro

New
Miracle-Gro All Purpose Water Soluble Plant Food Tub, 2 kg
Grows plants twice as big (versus unfed plants)

£17.98
53% Off
Baby Bio

New
Baby Bio Houseplant Food, 175ml- Fertiliser for Growing Vibrant and Healthy Plants - Easy To Use House Plant Care - Conc
HEALTHY PLANTS: Gives your houseplants a healthier look, with lush green leaves and vibrantly coloured flowers

£2.25 £4.76
New
H2Gro Wetting Agent Compost Peat Free Additive Water Fertiliser Hydro Plant Aid
H2Gro® is a unique blend of surfactants based on 3D technology with a multi-matrix effect. H2Gro® Granular Formulation c

£4.79
55% Off
Baby Bio

New
Baby Bio Houseplant Food, 175ml- Fertiliser for Growing Vibrant and Healthy Plants - Easy To Use House Plant Care - Conc
HEALTHY PLANTS: Gives your houseplants a healthier look, with lush green leaves and vibrantly coloured flowers

£2.14 £4.76
New
Master NPK 20-20-20 PLUS, 20g, Water soluble quality fertilizer, chloride free
Balanced Nutrition: NPK 20-20-20 provides nitrogen, phosphorus, and potassium in equal amounts for strong roots, healthy

£4.26
Plara

New
Plara Water Storing Gel 2KG | Moisture Control for Soil | Non-toxic Water Beads for Slow Release Water | Eco-friendly Wa
Water saving – The hydrogel reduces watering by up to 50% by storing water and gradually releasing it to the roots. For

£27.15
New
Miracle-Gro All Purpose Water Soluble Plant Food 1kg – Fast Acting Fertiliser
Whether you're growing in pots, beds, borders, or containers, this versatile fertiliser promotes lush, healthy growth an

£9.73
New
Liquid Seaweed Fertiliser 10L – Organic Concentrate for Lawns, Plants & Veg
Premium Seaweed Extract 10L – Organic Garden Fertiliser | All Purpose | Fast Acting. Cold-processed seaweed extract. Saf

£31.99
New
Liquid Seaweed Fertiliser 2.5L – Organic Plant Feed for Gardens
2.5L Ultra-Concentrated Liquid Seaweed Fertiliser (1:400) | Strong Plant Feed. Give your plants a powerful natural boost

£17.99
New
Miracle-Gro All Purpose Water Soluble Plant Food Tub 2 kg
Kaemingk Snowman LED Acrylic Figures Cool White.

£14.95
New
Hydroponic Houseplant Fertiliser for Water LECA and Semi-Hydro Growing 300ml
Hydroponic Houseplant Fertiliser for Water & Semi-Hydro Systems Liquid Nutrient for LECA, Clay Pebbles and Soil-Free Ind

£10.99
New
50 Aquarium Premium Fertiliser Plant food Root Tabs Capsules Aquascape
Premium Aquarium Fertilizer Root Tabs. Simply bury the root tabs when planting a new plant or 1 per 10cm² when setting u

£5.44
New
Miracle-Gro Grow All Purpose Soluble Plant Food Water Feed Fast Growing Minerals
Miracle Gro All Purpose Plant Food or Spoon. Easy to apply using the Miracle Gro Feeder. Miracle-Gro All Purpose Soluble

£20.99
New
13-0-46 Nitrogen Potassium Fertiliser TOP DRESSING or WATER SOLUBLE NPK UK
13-0-46 Nitrogen and Potassium Fertiliser 200g to 5kg. Nitrogenis highly soluble and can be applied as a liquid fertilis

£8.99
New
Tap Water Conditioner for Houseplants & Hydroponics 200ml
While using our water conditioner, you may also notice plants growing taller & more robust because harmful chemicals are

£18.00

25 Water Plant Fertilisers deals are available from: Amazon, eBay stores, starting from £2.14.
The biggest discount we found is 55% on Baby Bio Houseplant Food, 175ml- Fertiliser for Growing Vibrant and Healthy Plants - Easy To Use House Plant Care - Concentrate Plant Food - Indoor Use Plant Nutrition at Amazon.
The lowest price we found is £2.14 while the highest is £41.00.
Prices for the best Water Plant Fertilisers deals average at £14.23.
Last updated on May 9, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Water Plant Fertilisers.