Skip to content

Best Winter Lawn Fertilisers of 2026

Toby Butcher Avatar
Toby Butcher

Last Updated:

Save
Share

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Winter lawn fertilisers are an essential tool for maintaining a healthy and vibrant lawn during the colder months. These fertilisers are specially formulated to provide the necessary nutrients and minerals to grass during the winter, when growth slows down and the turf is more vulnerable to damage from cold weather and frost. They contain a balanced mix of nitrogen, phosphorus, and potassium, as well as other trace elements, to promote strong root growth, improve resilience to disease and pests, and enhance the colour and texture of the grass. Winter lawn fertilisers are a wise investment for any homeowner looking to keep their lawn looking its best all year round.

At a Glance: Our Top Picks

A1 Lawn Ultimate Autumn Winter Fertiliser Cover #TOP 1

A1 Lawn Ultimate Autumn Winter Fertiliser

9.9
Read Review
Elixir Gardens Autumn Winter Lawn Fertiliser Cover #TOP 2

Elixir Gardens Autumn Winter Lawn Fertiliser

9.8
Read Review
Dark Green Autumn Lawn Fertiliser for Greener Grass Cover #TOP 3

Dark Green Autumn Lawn Fertiliser for Greener Grass

9.6
Read Review

Top 7 Winter Lawn Fertilisers

#TOP 1 Best Lawn Fertiliser with Moss Killer

A1 Lawn Ultimate Autumn Winter Fertiliser

  • A1Lawn
  • NQ-EOJT-RTR5
  • Green
  • 10kg
A1 Lawn Ultimate Autumn Winter Fertiliser Cover

A1 Lawn Ultimate Autumn Winter Lawn Fertiliser, 10kg (280m2) - [6-5-10] Potassium Rich Feed with Nitrogen & Phosphorous - DEFRA, FERA & SASA Approved - Encourage Growth of Roots & Strong Grass

A1 Lawn Fertiliser is designed specifically for the autumn and winter months, providing your grass with essential nutrients to keep it healthy and lush. Its high potassium content promotes strength and durability, ensuring your lawn withstands the colder weather. Additionally, the phosphorus aids in developing robust roots and shoots, while nitrogen enhances the greenness of your grass. With its moss-killing properties, this fertiliser not only keeps your lawn looking good but also simplifies spring maintenance by preparing your lawn for scarifying.

9.9
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Potassium-rich for strong grass
  • Moss killer for easy maintenance
  • Designed for UK climate
  • Easy application, no mixing
  • Promotes healthy root growth
#TOP 2 Best Fast-Release Lawn Fertiliser

Elixir Gardens Autumn Winter Lawn Fertiliser

Elixir Gardens Autumn Winter Lawn Fertiliser Cover

Elixir Gardens Autumn Winter Fertiliser, Sports Field, Paddock and Lawn Feed | Made in UK, Optimized for British Climate | NPK 3-15-15+5.2% S+2.6% Mg | x 10kg Bag Treats 200sqm

The Elixir Gardens Lawn Fertiliser is designed specifically for the British climate, making it ideal for your garden. It contains 5.2% sulphur, which promotes overall grass health, and 2.6% magnesium, helping to harden turf during winter. This fertiliser reduces plant stress and supports healthy root development through the colder months. It also protects your plants from harsh winter conditions like strong winds and snow, ensuring your lawn stays vibrant and resilient.

9.8
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Optimised for British climate
  • Reduces plant stress
  • Promotes root development
  • Protects against harsh weather
  • Quick and slow release elements
#TOP 3

Dark Green Autumn Lawn Fertiliser for Greener Grass

Dark Green Autumn Lawn Fertiliser for Greener Grass Cover

Dark Green Lawn Fertiliser - Autumn/Winter Grass Feed - Fast Acting & Long Lasting - Safe for Gardens - Child and Pet Friendly Turf Thickener - Garden Lawncare Guy

The Garden Lawncare Guy Fertiliser is a fast-acting solution designed to green up your lawn with essential nutrients like nitrogen, potassium, and magnesium. It is safe for gardens, allowing you to apply it without worrying about hazards for children or pets. This fertiliser feeds your grass for up to 90 days, ensuring a vibrant lawn throughout the autumn and winter months. Additionally, it prevents brown stains, keeping your patios and decking looking pristine.

9.6
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Fast-acting lawn feed
  • Safe for children and pets
  • Long-lasting up to 90 days
  • No brown stains on surfaces
  • Ideal for autumn and winter
#TOP 4

Elixir Gardens Complete Winter Lawn Fertiliser

Elixir Gardens Complete Winter Lawn Fertiliser Cover

Elixir Gardens Complete Winter Lawn Premium Compund Fertiliser | Autumn & Winter Turf Feed Optimized for British Climate (N.P.K 4-3-8 + 4% Fe + 5% Ca) | 5kg Tub Treats up to 143 sq.m

The Elixir Gardens Winter Fertiliser is designed to reduce plant stress while keeping your lawn a vibrant green. With 5% calcium and trace elements, it strengthens plant cell walls and enhances disease resistance during the colder months. This fertiliser protects your lawn from harsh winter conditions, including strong winds and heavy rain. It features both quick and slow-release nutrients, providing immediate and lasting effects, making it easy for you to maintain a healthy lawn throughout autumn and winter.

9.4
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Reduces plant stress
  • Strengthens turf against diseases
  • Protects from harsh weather
  • Quick and slow-release nutrients
  • Maintains deep green colour
#TOP 5

Elixir Gardens Autumn Winter Fertiliser

Elixir Gardens Autumn Winter Fertiliser Cover

Elixir Gardens Autumn Winter Fertiliser, Sports Field, Paddock and Lawn Feed | Treats 100sqm, Made for British Climate | 1kg-25kg in bag or tub | NPK 3-15-15 + 5.2% S | x 5kg bag

Features

  • Item Package Quantity = Weight, e.g. 1 = 1kg. Contains 5.2% Sulphur Which Is Fantastic For Grass Overall Health. Also Contains 2.6% Magnesium Ideal For Hardening Turf During Winter And Encourages Seed Germination For Early Season Growth.
  • Here At Elixir Gardens We Supply To Many Professional Growers As Well As A Range Of Garden Centres, Nurseries And Landscaping Businesses.
  • Perfect For Protecting Your Plants From The Harsh Cold Winter Weather Conditions Such As Strong Winds, Heavy Rain, Ice And Snow.
9.2
FTB Score
Buy on Amazon Find on eBay
#TOP 6

F&G Supplies Autumn and Winter Lawn Feed

F&G Supplies Autumn and Winter Lawn Feed Cover

F&G Supplies 20 kg sack of Proctors Autumn and Winter Lawn Grass Feed for 571 sqm - can use all year!

The F&G Autumn Lawn Feed is an ideal treatment for your lawn during the Autumn and Winter months. By using this fertiliser, you can ensure your lawn is healthier and more vibrant by summer. It has a balanced chemical composition of 3 - 10 - 5, providing essential nutrients. Covering an impressive 571 square metres, the application rate is just 35 square metres, making it easy to manage. Plus, it can be used throughout the year, offering convenience and flexibility for your lawn care routine.

9.2
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Promotes healthy lawn growth
  • Covers large areas efficiently
  • Year-round application possible
  • Balanced nutrient composition
#TOP 7

Elixir Gardens Complete Winter Lawn Fertiliser

Elixir Gardens Complete Winter Lawn Fertiliser Cover

Elixir Gardens Complete Winter Lawn | Autumn Winter Lawn Food Fertiliser 4-3-8 + 4Fe + Te | 10kg Tub Treats over 286sqm | Optimized for British Climate

The Elixir Gardens Winter Fertiliser is designed to help your lawn thrive during the colder months. It contains a homogenous blend that reduces plant stress while ensuring a vibrant green colour. With 5% calcium and trace elements, it strengthens plant cell walls and enhances disease resistance against harsh winter conditions. This fertiliser is perfect for protecting your lawn from strong winds, heavy rain, ice, and snow, providing peace of mind during winter. Additionally, its quick and slow release elements offer both immediate and lasting nourishment.

9.2
FTB Score
Buy on Amazon Find on eBay

What We Like

  • Reduces plant stress
  • Enhances disease resistance
  • Protects against harsh weather
  • Maintains deep green colour
  • Fast and lasting effects

Frequently Asked Questions (FAQs)

1. What is the best grass fertilizer for the winter?

The best grass fertilizer for winter is high in nitrogen (N), phosphorus (P), and potassium (K) and is applied in autumn. The ratio should be 2:1 for nitrogen (N) and potassium (K) such as 6-0-3 or 8-2-4. Do only fertilize cool-season grass such as Fescue, Blue, and ryegrasses that grow best in spring and fall.

2. What fertilizer do you put down in the winter?

Besides a dose of nitrogen, a quality winter fertilizer should include a good amount of potassium, too. A 2:1 to 1:2 ratio of nitrogen to potassium, the first and third numbers of the fertilizer analysis, will ensure your grass gets the nutrient balance it needs.

3. Can I feed grass in winter?

Winter Lawn Feed If you're using an iron fertiliser such as WINTER GREEN High Iron then November onwards is best with a mild spell between December and January being optimal.

Editor's Notes

During our winter lawn fertiliser research, we found 95 winter lawn fertiliser products and shortlisted 7 quality products. We collected and analyzed 10,470 customer reviews through our big data system to write the winter lawn fertilisers list. We found that most customers choose winter lawn fertilisers with an average price of £18.82.

The winter lawn fertilisers are available for purchase. We have researched hundreds of brands and picked the top brands of winter lawn fertilisers, including A1Lawn, Elixir Gardens, Garden Lawncare Guy, F&G Supplies.

Written by

Toby Butcher Avatar

Toby Butcher

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.