Best Iron Sulphate Lawn Fertilisers of 2025

GUARD-EN-FORCE Iron Sulphate is a versatile lawn conditioner that helps you achieve a lush, green lawn. Known for its effectiveness, this product can be used throughout the year, making it an essential part of your lawn care routine. It can be easily applied either wet or dry, giving you flexibility in how you maintain your lawn. Additionally, it promotes strong grass growth and enhances the dark green colour of your lawn, ensuring your garden looks its best.

Pro-Kleen Iron Sulphate is a powerful lawn tonic that can transform your grass into a thicker, greener, and healthier lawn in just four days. This turf hardener keeps your grass strong and luscious all year round, providing the professional results that lawn keepers love. With a rich, long-lasting formula, it’s ideal for use on lawns, pitches, and golfing greens. Plus, it’s easy to use, covering up to 1000 square metres when diluted, making it a convenient choice for any gardener.

The Pro-Kleen Lawn Tonic is a concentrated liquid designed to enhance your lawn’s health and appearance. Rich in sulphate of iron and seaweed extract, it helps create a lush, green grass and a dense sward. Professionals across the UK trust this tonic for its effectiveness in turf hardening, ensuring your lawn is both beautiful and robust. Additionally, its formula aids in preventing lawn diseases, making it an ideal choice for maintaining a healthy garden.

Pro-Kleen Iron Sulphate is a powerful 3-in-1 lawn product that enhances the health of your grass. Its iron-rich formula promotes strong growth and gives your lawn a vibrant dark green appearance. As a trusted choice among professionals, it ensures your lawn remains lush and resilient. This product also helps to acidify the soil slightly, improving overall soil quality. With easy application options, you can achieve effective results whether applying it wet or dry.

GUARD-EN-FORCE Lawn Fertiliser is an exceptionally powerful, high-quality 3-in-1 formula designed to promote strong growth and vibrant, dark green grass. This easy-to-use fertiliser covers approximately 500 to 1000 square metres, allowing you to achieve lush lawns effortlessly. Whether applied wet or dry, it ensures your grass receives essential nutrients promptly. Additionally, it is trusted by both amateur and professional gardeners alike, making it a reliable choice for achieving perfect pitches and superior golfing greens.

GUARD-EN-FORCE Iron Sulphate is a highly effective lawn treatment that greets your grass with a lush green appearance. This versatile product can be easily applied all year round, either wet or dry, making it convenient for you to maintain your lawn. As a fast-acting fertiliser, it encourages robust grass growth and helps prevent lawn disease, ensuring your garden remains healthy. With its premium quality, fine powder, you can effortlessly create a solution that works wonders for your outdoor space.

The GUARD-EN-FORCE Iron Sulphate is a highly regarded lawn fertiliser known for its multiple applications. It helps create a lush, green lawn by promoting strong grass growth and enhancing colour. You can easily apply it all year round, whether wet or dry, using a sprayer or even a watering can. With its fast-acting formula, this fertiliser not only greets you with a healthy lawn but also assists in preventing lawn diseases, making it an essential choice for any gardener.

This premium product, GUARD-EN-FORCE Iron Sulphate, is your lawn's best friend. Iron Sulphate enhances the greenness and health of your grass, making it lush and vibrant. Easy to apply, it can be mixed with water for spraying or scattered directly onto the lawn. You can use it throughout the year, especially in spring and autumn, ensuring your lawn remains in top condition. With a fine, dried powder formulation, it offers more product per gram for effective lawn care.

Transform your lawn with GREEN GLEN Lawn Tonic, a powerful iron-rich fertiliser that promotes vigorous growth and a deep green colour. Its easy-to-use format allows you to simply dissolve the powder in water or apply it dry, making lawn care efficient and hassle-free. This versatile product is perfect for greening lawns, hardening turf, and preventing lawn diseases, ensuring your grass remains healthy and vibrant all year round. With visible results within 1-2 weeks, you can enjoy a lush garden with minimal effort.

The GUARD-EN-FORCE Iron Sulphate is a premium lawn fertiliser that promotes lush green grass and healthy growth. Iron Sulphate, also known as Ferrous Sulfate, is essential for treating lawns, especially in spring and autumn. It can be easily applied wet or dry, making it convenient for you to maintain your garden throughout the year. This fast-acting fertiliser encourages a dark green colour in your grass and helps prevent lawn diseases, ensuring your lawn remains vibrant and strong.