Best Iron Sulphate Lawn Fertilisers of 2026

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.

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.

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.

Cleenly Iron Sulphate is an exceptional lawn feed that helps keep your grass strong and healthy, regardless of the weather. By using this product, you can achieve a lush, green lawn that will impress everyone in your neighbourhood. It also hardens turf, which helps prevent lawn diseases before they can take hold. Additionally, the long-lasting formula gradually releases nutrients into the soil, ensuring your lawn remains nourished for longer. For optimal results, apply before rain to allow the granules to fully penetrate the soil.

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.

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.

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.

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.

The Intralabs Iron Sulphate is a powdered lawn conditioner designed to help toughen and green up your grass. As Iron Sulphate Heptahydrate powder, it dissolves easily, making it simple for you to apply evenly across your lawn. This product, also known as Ferrous Sulphate, provides essential iron that promotes healthy, vibrant grass growth. By using this lawn conditioner, you can improve the appearance and resilience of your lawn with minimal effort.

The PSN Iron Sulphate is a premium lawn tonic that enhances your garden's health and appearance. This versatile product is perfect for greening your lawn, providing essential iron for lush grass colour. It strengthens turf, making it more resilient against pests and harsh weather. Additionally, it reduces unsightly worm casts, keeping your lawn looking tidy. With its easy application, whether diluted in water or applied dry, maintaining a vibrant and healthy lawn becomes hassle-free.