• 10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More 1
  • 10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More 2
  • 10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More 3
  • 10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More 4
  • 10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More 5

10 Best Fertilisers UK 2022 | Westland, Miracle-Gro and More

While plants, flowers, grass and trees get plenty of nutrients from the atmosphere and the soil they’re planted in, they don’t get everything they need to really flourish. That’s where garden fertiliser steps up and gives your plants a little helping hand – by providing additional minerals, it will encourage stronger, and sometimes faster, growth. 


Buying fertiliser, however, can be a little confusing, so we've put together this guide to explain the differences between the options available and point you in the right direction for the needs of your plants, borders, vegetables and lawns. From there, we have some great recommendations for organic, liquid and slow-release fertilisers from established brands such as Miracle-Gro, Westland and Baby Bio. 

  • Last updated: 04-04-2022
Table of Contents

How to Choose Fertiliser in the UK – Buying Guide

Without further ado, let’s get into the nitty-gritty. We’ll be looking at what nutrients to keep an eye out for, whether you should opt for chemical or organic food and the differences between liquid and granular options. Your indoor and outdoor plants will be flourishing in no time! 

Understanding the NPK Rating: A Higher Percentage Equals a Higher Nutrient Content

Understanding the NPK Rating: A Higher Percentage Equals a Higher Nutrient Content

The first thing to get familiar with is a fertiliser's NPK rating, which just requires a quick biology brush-up. Basically, there are six primary foods/nutrients that plants need to survive, but the first three (oxygen, hydrogen and carbon) are found in the atmosphere and soil, so we don’t have to worry about those. 


The other three are nitrogen (N), which aids plant growth, phosphorous (P) to strengthen the roots and potassium (K) to increase flower and fruit production. As these are more difficult to obtain, most fertilisers will focus on providing these. The percentage of each will be given as an NPK rating, whereby the higher the number, the more of that nutrient there is.


For example, if you see 24 - 8 - 16, that means it has three times more nitrogen than phosphorus and two-thirds of the potassium, so its main focus is growth. If it's a 7 - 7 - 7, it's a great all-rounder for plant health. Fertilisers with higher percentages do tend to be a little more expensive, so it can be a bit of a balancing act getting the best for your budget.  

Organic Fertiliser Is Safer if You Have Pets at Home

Organic Fertiliser Is Safer if You Have Pets at Home

Next, consider whether to opt for organic or chemical fertilisers. The big reason people tend to go for organic is that it isn't toxic to animals, so if you have pets at home, this is a guaranteed way of them staying safe no matter what. Non-toxic formulas won't hurt any wild animals either, which is always nice to know. 


However, one thing chemical fertilisers offer is better value. If you’re planning on building a vegetable garden, then purchasing large quantities of organic fertiliser could end up costing a small fortune over the years. It's advised to wait a couple of weeks after application before eating chemically-fed fruit and veg, though, and to wash it thoroughly. 

 
While organic seems like the best way to go, the reality is that these often don't offer the same amount of nutrients as chemical options. Therefore, it's about balancing your desire for a great garden with price, your household's needs and how much time you're willing to spend pruning. 

The Type of Fertiliser Will Determine How Long It Works For

The Type of Fertiliser Will Determine How Long It Works For

Many people assume that choosing between liquid or granular fertiliser is a matter of personal preference, but there is some method to it as well. Firstly, liquid, which tends to come as a concentrate that's added to a watering can or a hosepipe attachment, is often a faster-acting food but it will need to be reapplied every few weeks. It is easier to use in smaller pots, like those of your houseplants. 


Dry fertiliser, meanwhile, is mixed and watered into the soil. Many gardeners find granules easier to work with because you can see exactly how much you’re using at any given time, and more crucially, where it has landed. In addition, these types don't typically need to be reapplied as often as they can last anywhere between 4 and 12 weeks, which is better if you have big outdoor beds to attend to. 

Top 10 Best Fertilisers in the UK

Now that we’ve had a look at the main factors you should be considering when buying fertiliser, it’s time for our recommendations. We’ve focused mainly on multipurpose food rather than those specifically for certain flower or fruit species, but there are some more specific options for lawn and houseplant care. 

10

SimpahomeEssential Nutrients Organic Farmyard Manure

£16.99

NPKUnknown
Organic or ChemicalOrganic
TypeGranular
SpeedSlow-release
Suitable ForGeneral garden use, beneficial for herbaceous borders, shrubs and top-dressing roses
Volume2 x 40 L
9

Grow MateGrowthMax Liquid Organic Fertiliser

£20.89

NPKUnknown
Organic or ChemicalOrganic
TypeLiquid
SpeedFast-acting, feed every 2 weeks
Suitable ForAll plants, flowers and vegetables, houseplants
Volume1 L
8

VitaxGreen Up Liquid Feed & Weed

£10.44

NPKHigh nitrogen
Organic or ChemicalChemical
TypeLiquid
SpeedFast-acting
Suitable ForLawns
Volume1 L (treats 200 m2)
7

Growth TechnologyHouseplant Liquid Concentrated Fertiliser

£5.90

NPK1.9 - 0.7 - 3.3
Organic or ChemicalOrganic
TypeLiquid
SpeedFast-acting, use with each watering
Suitable ForHouseplants
Volume300 ml
6

Miracle-GroAll Purpose Soluble Plant Food

£4.69

NPK24 - 8 - 16
Organic or ChemicalChemical
TypeLiquid
SpeedFast-acting, feed every 2 weeks
Suitable ForAll-purpose, houseplants
Volume1 kg
5
NPK10.6 - 4.4 - 1.7
Organic or ChemicalChemical
TypeLiquid
SpeedSlow-release, feed every 2 weeks
Suitable ForHouseplants, potted plants
Volume175 ml
4

Richard JacksonFlower Power Premium Plant Food

£29.99

NPK12 - 12 - 36
Organic or ChemicalChemical
TypeGranular
SpeedSlow-release
Suitable ForAll-purpose, flowers, fruit vegetables
Volume1.5 kg
3

WestlandFish, Blood and Bone All Purpose Plant Food

£14.50

NPK3 - 9 - 3
Organic or ChemicalOrganic
TypeGranular
SpeedSlow-release, feed every 4-6 weeks
Suitable ForAll-purpose outdoor
Volume1.5 to 10 kg
2

Miracle-GroAll Purpose Concentrated Liquid Plant Food

£10.50

NPK7 - 3 - 5
Organic or ChemicalChemical
TypeLiquid
SpeedFast-acting, feed every 7-14 days
Suitable ForAll-purpose, flowers and veg in pots or beds
Volume1 L or 5 L
1

WestlandGrowmore Garden Fertiliser

£13.99

NPK7 - 7 - 7
Organic or ChemicalChemical
TypeGranular
SpeedSlow-release, feed every 4-6 weeks
Suitable ForAll garden plants
Volume1.5 to 10 kg

Compare the Best Fertilisers

Image
1
Westland Growmore Garden Fertiliser 1

Westland

2
Miracle-Gro All Purpose Concentrated Liquid Plant Food 1

Miracle-Gro

3
Westland Fish, Blood and Bone All Purpose Plant Food 1

Westland

4
Richard Jackson Flower Power Premium Plant Food  1

Richard Jackson

5
Baby Bio Original Plant Food 1

Baby Bio

6
Miracle-Gro All Purpose Soluble Plant Food 1

Miracle-Gro

7
Growth Technology Houseplant Liquid Concentrated Fertiliser 1

Growth Technology

8
Vitax Green Up Liquid Feed & Weed 1

Vitax

9
Grow Mate GrowthMax Liquid Organic Fertiliser 1

Grow Mate

10
Simpahome Essential Nutrients Organic Farmyard Manure 1

Simpahome

Name

Growmore Garden Fertiliser

All Purpose Concentrated Liquid Plant Food

Fish, Blood and Bone All Purpose Plant Food

Flower Power Premium Plant Food

Original Plant Food

All Purpose Soluble Plant Food

Houseplant Liquid Concentrated Fertiliser

Green Up Liquid Feed & Weed

GrowthMax Liquid Organic Fertiliser

Essential Nutrients Organic Farmyard Manure

Features

Consistent Nutrients for a Reasonable Price

Visibly Better Plants in Seven Days

Natural Feed for a Healthy Garden

The Equivalent of Steroids for Plants

Give All Your Potted Greenery a Helping Hand

A UK Favourite for Garden and Indoor Plants

Increase the Yield on Cacti and Other Houseplants

A Dual Feed and Weedkiller for the Perfect Lawn

Who Doesn’t Want a 400% Greater Yield?

Big Quantity at a Competitive Price

Price£13.99£10.50£14.50£29.99£2.00£4.69£5.90£10.44£20.89£16.99
NPK7 - 7 - 77 - 3 - 53 - 9 - 312 - 12 - 36 10.6 - 4.4 - 1.7 24 - 8 - 161.9 - 0.7 - 3.3 High nitrogen UnknownUnknown
Organic or ChemicalChemicalChemicalOrganicChemicalChemicalChemicalOrganicChemicalOrganicOrganic
TypeGranularLiquidGranularGranularLiquidLiquidLiquidLiquidLiquidGranular
SpeedSlow-release, feed every 4-6 weeksFast-acting, feed every 7-14 daysSlow-release, feed every 4-6 weeksSlow-releaseSlow-release, feed every 2 weeksFast-acting, feed every 2 weeksFast-acting, use with each wateringFast-actingFast-acting, feed every 2 weeksSlow-release
Suitable ForAll garden plantsAll-purpose, flowers and veg in pots or beds All-purpose outdoor All-purpose, flowers, fruit vegetables Houseplants, potted plantsAll-purpose, houseplantsHouseplants LawnsAll plants, flowers and vegetables, houseplantsGeneral garden use, beneficial for herbaceous borders, shrubs and top-dressing roses
Volume1.5 to 10 kg1 L or 5 L1.5 to 10 kg1.5 kg 175 ml1 kg 300 ml1 L (treats 200 m2)1 L2 x 40 L
Link

More Help Caring for Your Plants

More Help Caring for Your Plants

Having a bit of green space, no matter how big or small, is a wonderful thing, but it does take some upkeep. Check out the recommendations below to keep your lawn watered, repot your plants in the best possible soils and even make your own compost for your flowers or veg patch. 

Summary

Whether you're looking for fertiliser for your prized roses or you want to finally get around to starting that veg patch, we hope that the products we've recommended will help you in your mission. We believe that if you follow the advice, then your plants are sure to be bigger and greener than ever!

Author: Lewis Clark

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