Best Fast-Release Lawn Fertilisers of 2025

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Fast-Release Lawn Fertilisers are a type of fertiliser that provide quick and effective nutrients to improve the health and appearance of your lawn. These fertilisers are designed to be easily absorbed by the grass, meaning that they start to work almost immediately. They are typically made up of a combination of nitrogen, phosphorus and potassium, which are essential for strong and healthy grass growth. Fast-Release Lawn Fertilisers are perfect for those who want to give their lawn a quick boost, especially during the growing season.
At a Glance: Our Top Picks
Top 8 Fast-Release Lawn Fertilisers
Landscaper Pro Slow Release Lawn Fertiliser
The Landscaper Pro Fertiliser is designed for effective lawn care, offering a slow release formula that lasts up to three months per application. This means you can apply it and enjoy a lush lawn without frequent reapplication. Its fast acting formula delivers results within just seven days, allowing you to see immediate improvements. Perfect for spring and summer, this fertiliser keeps your lawn vibrant during the growing season. Additionally, it comes in a convenient 5kg bag, ensuring you have enough to cover your lawn easily.
Landscaper Pro Autumn/Winter Lawn Fertiliser
The Landscaper Pro Fertiliser is a slow-release lawn fertiliser that lasts up to three months with each application. Its fast-acting formula provides visible results in just seven days, ensuring your lawn looks its best quickly. This fertiliser is specially formulated for winter and autumn use, promoting steady growth while helping to reduce stress on your grass during the colder months. Supplied in a generous 15kg bag, it also includes a 100g pack of premium hard-wearing lawn seed for added convenience.
The Grass People Quick Release Pre-Seed Fertiliser
The Grass People Fertiliser is a fast-acting solution designed for sowing a new lawn. It provides essential nutrients, with high levels of phosphate that promote strong and early root growth, ensuring your grass establishes quickly. The premium protection offered by potassium helps guard young seedlings against diseases, giving you peace of mind as your lawn develops. Additionally, it provides instant aid for root growth, transforming your bald patches into a lush green space swiftly.
Dark Green Lawn Fertiliser for Fast Growth
The Garden Lawncare Guy Fertiliser is a fast-acting solution designed to green up your lawn quickly. Packed with essential nutrients like nitrogen, potassium, and magnesium, it helps you achieve thicker and greener grass. You can apply it safely in gardens where children and pets play, as it doesn’t require toxic warning labels. With its dual-action formula, it feeds your grass for up to 90 days, ensuring a long-lasting lush appearance without the worry of brown stains on your hard surfaces.
Elixir Gardens Autumn Winter Lawn Fertiliser
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.
Lawn Gold Organic Fertilizer & Moss Remover
Lawn Gold Fertilizer is an organic-based solution that is safe for both children and pets, allowing you to maintain your garden without worry. It is chemical-free, making it an environmentally friendly choice for your lawn care. The product works through indirect action against moss, which means you won't need to rake out any moss, saving you time and effort. Additionally, it features fast and slow-release fertiliser technology, ensuring your lawn remains lush and green for up to six weeks.
Seed Start Lawn Fertiliser for Healthy Grass
The Seed Start Fertiliser is an excellent choice for anyone looking to establish a lush, green lawn. This pre-seed and pre-turf fertiliser is fast-acting and non-hazardous, making it safe to use in gardens where children and pets play. It contains a balanced mix of nitrogen, potassium, and phosphorus, providing essential nutrients that foster healthy roots and quick growth. Additionally, this product prevents unsightly brown stains on hard surfaces, ensuring your patios and decking remain clean. You can apply it easily by hand or with a spreader, ensuring convenience in your lawn care routine.
Elixir Gardens Autumn Winter Sports Feed
The Elixir Gardens Sports Feed is designed to support your lawn's health during the challenging autumn and winter months. With 5.2% sulphur and 2.6% magnesium, this fertiliser enhances overall grass vitality and helps strengthen turf against harsh weather. It effectively reduces plant stress and promotes robust root development, ensuring your lawn remains resilient. Additionally, its blend of quick and slow-release nutrients provides both immediate and long-lasting benefits, allowing you to apply it every 6-8 weeks for optimal results.
Frequently Asked Questions (FAQs)
1. What fertilizer releases fast?
Fast releasing fertilizers provide nitrogen to the plant in a form that is immediately available. And, when it comes to running a lawn care company, those quick results make for happy customers. The big draw-back on quick release fertilizer is that the result is often short lived.
2. When should I use fast release fertilizer?
There are times when quick-release fertilizer comes in handy. For instance, if you just planted a lawn and need that quick green up and want to push top growth to help block weeds from growing in, that's an excellent time for quick-release fertilizer.
3. Which fertilizer will green up a lawn the fastest?
The number one way to increase the green color in your lawn is with Nitrogen. Nitrogen is one of the big three macronutrients needed in the greatest quantities for healthy turf. It promotes top growth in the lawn by pushing the production of chlorophyll in the plant.
4. How long does fast release fertilizer last?
Rapid release into the soil may lead to nutrient leaching, which is harmful to the environment. Lasts only two to four weeks.
During our fast-release lawn fertiliser research, we found 133 fast-release lawn fertiliser products and shortlisted 8 quality products. We collected and analyzed 8,667 customer reviews through our big data system to write the fast-release lawn fertilisers list. We found that most customers choose fast-release lawn fertilisers with an average price of £19.95.
The fast-release lawn fertilisers are available for purchase. We have researched hundreds of brands and picked the top brands of fast-release lawn fertilisers, including GardenersDream, The Grass People, Garden Lawncare Guy, Elixir Gardens, Lawn Gold. The seller of top 1 product has received honest feedback from 10,637 consumers with an average rating of 4.7.

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.