---
product_id: 84364243
title: "– A1 Lawn, Ultimate Autumn Winter Lawn Fertiliser - Hardens Turf & Boosts Root Strength, High Potassium 6-5-10 NPK, DEFRA Certified, 10kg"
brand: "a1lawn"
price: "VT123807"
currency: VUV
in_stock: true
reviews_count: 8
category: "A1 Lawn"
url: https://www.desertcart.vu/products/84364243-a1-lawn-ultimate-autumn-winter-lawn-fertiliser-hardens-turf-boosts
store_origin: VU
region: Vanuatu
---

# 6-5-10 NPK for root & turf strength Covers up to 280m² per 10kg bag DEFRA certified professional grade – A1 Lawn, Ultimate Autumn Winter Lawn Fertiliser - Hardens Turf & Boosts Root Strength, High Potassium 6-5-10 NPK, DEFRA Certified, 10kg

**Brand:** a1lawn
**Price:** VT123807
**Availability:** ✅ In Stock

## Summary

> 🍂 Fortify your turf, flaunt your lawn – winter-proof your green kingdom!

## Quick Answers

- **What is this?** – A1 Lawn, Ultimate Autumn Winter Lawn Fertiliser - Hardens Turf & Boosts Root Strength, High Potassium 6-5-10 NPK, DEFRA Certified, 10kg by a1lawn
- **How much does it cost?** VT123807 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/84364243-a1-lawn-ultimate-autumn-winter-lawn-fertiliser-hardens-turf-boosts)

## Best For

- a1lawn enthusiasts

## Why This Product

- Trusted a1lawn brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted UK Expertise:** Over a decade of supplying premium lawn care products to professionals and enthusiasts.
- • **Deep Root Nourishment:** Balanced 6-5-10 NPK ratio promotes strong roots and lush green shoots.
- • **Effortless Application:** Easy-to-spread granules cover large areas efficiently with precise dosing.
- • **Year-Round Lawn Resilience:** High potassium formula hardens turf to survive autumn and winter stress.
- • **Certified Quality Assurance:** DEFRA, FERA & SASA certified for trusted, professional-grade lawn care.

## Overview

A1 Lawn Ultimate Autumn Winter Fertiliser is a DEFRA-certified, high-potassium granular feed designed to strengthen turf and boost root development during colder months. With a precise 6-5-10 NPK ratio, it ensures deep, vibrant green lawns that resist winter stress. Easy to apply and trusted by UK professionals since 2010, this 10kg bag covers up to 280m², making it the go-to choice for year-round lawn vitality.

## Description

A1 Lawn, Ultimate Autumn Winter Lawn Fertiliser - Hardens Turf & Boosts Root Strength, High Potassium 6-5-10 NPK, DEFRA Certified, 10kg : desertcart.co.uk: Garden

Review: Brilliant product - Brilliant for grass, greens grass, kills moss , we use this once a year for lush green seed free lawns Easy to apply
Review: Ideal winter dressing. - Does what it says. Seems to promote root not shoot growth. So no mowing in the winter after application. Ideal winter dressing.

## Features

- CERTIFIED PROFESSIONAL GRADE - A1 Lawn Ultimate Autumn Winter Fertiliser is certified by DEFRA, FERA, and SASA, ensuring a professional-grade product that meets strict quality and regulatory standards.
- GET A LUSH, GREEN LAWN ALL YEAR - Stop worrying about your lawn looking thin and weak in the cold months; this high-potassium, iron-rich feed hardens the turf and gives you a deep, vibrant green colour that lasts through autumn and winter.
- OPTIMAL NPK RATIO FOR ROOT STRENGTH - Formulated with a precise 6-5-10 NPK ratio, this fertiliser is rich in potassium (10) to strengthen the grass against winter stress and contains phosphorous (5) to support deep, healthy root and shoot development.
- EASY GRANULAR APPLICATION - The premium homogeneous granular product is designed for easy application with a spreader at a rate of 35g per m², covering up to 280m² per 10kg bag, and is available in 1kg, 10kg, and 20kg sizes for HOW TO USE on domestic and professional lawns.
- TRUSTED UK EXPERTISE SINCE 2010 - A1 Lawn has been supplying high-quality, freshly produced fertilisers and grass seed direct to hundreds of thousands of satisfied domestic and trade customers across the UK for over a decade.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MV0XMJI |
| Best Sellers Rank | 18,913 in Garden ( See Top 100 in Garden ) 100 in Lawn Fertilisers |
| Brand Name | A1Lawn |
| Coverage | Lawns and Turf Grasses |
| Customer Reviews | 4.4 4.4 out of 5 stars (590) |
| Included Components | Grass Seed |
| Item Form | Granules |
| Item Type Name | Grass Seed |
| Item Weight | 10 Kilograms |
| Manufacturer | A1LAWN |
| Mixing Ratio | 1 |
| Model Number | NQ-EOJT-RTR5 |
| Specific Uses For Product | Lawn Maintenance |
| Target Species | Lawns, Grass |
| Unit Count | 10000.0 Grams |

## Product Details

- **Brand:** A1Lawn
- **Item form:** Granules
- **Item weight:** 10 Kilograms
- **Manufacturer:** A1LAWN
- **Specific uses for product:** Lawn Maintenance

## Images

![– A1 Lawn, Ultimate Autumn Winter Lawn Fertiliser - Hardens Turf & Boosts Root Strength, High Potassium 6-5-10 NPK, DEFRA Certified, 10kg - Image 1](https://m.media-amazon.com/images/I/711E1Dql7dL.jpg)

## Questions & Answers

**Q: What setting on a Scott drop spreader for A1 ultimate autumn winter fertilizer**
A: Hello,

If you are referring to the "Scotts Evengreen Drop Spreader" then the setting should be around number 6.
This is a guideline only, if in doubt contact the manufacturer or start on a lower setting to be safe.

Many thanks 

A1Lawn

**Q: For pre seeding in november (now) should i use this or the other 'a1 pre seed'? thanks**
A: I believe this is for use on established turf only. My turf (not seed) was laid at the end of February.     I was recommended to use an autumn feed around October. I chose this product as it seemed straightforward and easy to use. I have not been disappointed in the results.

**Q: When can you use on newly seeded lawns?**
A: We would suggest using it from around 4 weeks post germination.

**Q: is this product child and animal  recommended ?**
A: Hello,

This product is safe for pets and children one the granules are fully dissolved.
Normally this will occur around 48hours after application with plenty of rainfall/water in that time.

Many thanks

A1Lawn

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant product
*by N***L on 7 September 2025*

Brilliant for grass, greens grass, kills moss , we use this once a year for lush green seed free lawns Easy to apply

### ⭐⭐⭐⭐ Ideal winter dressing.
*by J***S on 27 October 2025*

Does what it says. Seems to promote root not shoot growth. So no mowing in the winter after application. Ideal winter dressing.

### ⭐⭐⭐⭐⭐ Easy to spread very effective
*by V***L on 19 November 2025*

Easy to spread and very effective, I used it on lawn a few weeks ago and it looks really green and lush.

## Frequently Bought Together

- 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
- Crystals® Grass and Lawn Seed Spreader, Lawn Feed, Fertiliser Spreader, Large Wheels and Adjustable Setting, H 108cm x W 56cm x D 18cm, Weight: 1.85kg
- Pronto Seed Grass Seed - 1.4KG Premium Quality 84 m2 Coverage for Overseeding - Fast Growing and Hard Wearing Grass Seeds - Tailored to UK Climate - Defra Approved

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-06-06*