10 Best Organic Lawn Fertilizers 2025 in the UK

The Miracle-Gro Evergreen Complete 4-in-1 Lawn Food is designed to create a thicker, greener, and healthier lawn while also controlling weeds and moss. It comes in granule form, making it easy to apply by hand.

This product is best suited for those looking to maintain a healthy lawn with minimal effort, as it combines fertilization and weed control in one. The dimensions and weight indicate it is a substantial product, providing good coverage for up to 360 square meters.

While its environmental impact is not explicitly mentioned, products from Miracle-Gro typically aim to balance effectiveness with environmental considerations. This product is ideal for those who want a straightforward, effective solution for lawn care that addresses multiple issues simultaneously.

The Westland SafeLawn Child and Pet Friendly Natural Lawn Feed is a solid choice for those looking to maintain a lush and healthy lawn while ensuring safety for children and pets. One of its primary strengths is the use of only natural ingredients, making it a genuinely organic option that contributes positively to environmental protection. Additionally, it has the added benefit of included lawn seeds, which help fill in gaps and promote a thicker, more resilient grass cover that can naturally suppress weeds and moss. Covering up to 400 square meters, this 14 kg package is efficient for medium to large-sized lawns.

The application comes in granule form, which is generally easy to spread, although it may require a spreader for even distribution. In terms of soil health, the natural composition of the product suggests it promotes a healthy soil ecosystem, although results can vary based on current soil conditions. Environmentally, it's a safer option compared to synthetic fertilizers, reducing the risk of harmful runoff.

Customers have rated it positively, with a 4.3 out of 5 stars from over 3,000 reviews, indicating satisfaction with its effectiveness and safety features. It's particularly appealing for households with children and pets, who can immediately enjoy the lawn post-application without concerns of exposure to harmful chemicals.

The Dark Green Lawn Fertiliser by Garden Lawncare Guy is designed to quickly make your lawn thicker and greener, thanks to its high nitrogen content. It contains an N-P-K ratio that includes potassium, phosphorus, as well as calcium and magnesium, all beneficial for lush grass growth. One of its standout features is that it's safe for use in gardens where children and pets play, as it does not require toxic warning labels and is designed to be safe when applied as directed.

The fertiliser also offers a combination of fast and slow-release granules, ensuring that your lawn gets an immediate nitrogen boost while continuing to feed for up to 90 days. This extended feeding period is particularly helpful for maintaining a healthy lawn with less frequent applications. Another advantage is that it does not leave unsightly brown stains on hard surfaces, making it a cleaner option for lawns near patios or decking.

Manufactured in the UK, it targets grass greening, root development, and plant growth and covers a significant area (70-100m²) with its 2.55 kg weight. The Dark Green Lawn Fertiliser is a strong option for anyone looking to quickly and safely improve their lawn's appearance and health with minimal maintenance.