Best lawn fertiliser

Keep the grass in your garden lush and healthy with lawn fertiliser. Discover the top choice for your plot among our selection.

Green lawn with building in background
(Image credit: Petar Tonchev on Unsplash)

For grass that’s healthy, thick, and green, it’s worth using a lawn fertiliser regularly. Fertiliser provides lawns with the minerals and nutrients it requires while helping eliminate moss and weeds that can spoil their look. Selections range from products best applied with a spreader and those that can be applied by hand. Find the best option for you and your plot among our picks.

Best overall

lawn fertiliser

(Image credit: Amazon)

Miracle-Gro Evergreen Complete 4-in-1 lawn food

Drought protection

An all-round solution for use from April to September.

Pros:

  • Feeds, greens, and kills moss and weeds
  • Quick results
  • Helps water absorption

Cons:

  • Best applied with a spreader

This lawn fertiliser is the solution to a lot of different issues in one pack. It is high in nitrogen to make the grass greener, while potassium promises to make the grass thicker. I like the fact that it helps build stronger roots, so grass can better absorb water as well as nutrients; periods of heat and drought can occur unpredictably. It’s made to be used from April to September, and although it could be applied by hand, it’s recommended to apply it with a spreader. (You’ll need to factor this in if you don’t already have one.) Note that kids and pets can’t access the grass until the granules have been watered in and the grass is dry.

Best kid and pet-friendly

lawn fertiliser

(Image credit: Amazon)

Westland SafeLawn natural lawn feed

Gap filler

This granular formula has feed and grass seed to sort out thin patches.

Pros:

  • No need to keep kids and pets away
  • Built-in applicator
  • Can be raked or brushed in

Cons:

  • For smaller gardens

If you find it inconvenient to have to keep the little ones, the family dog, and the cat off the lawn, try this lawn fertiliser. Use it, and they don’t have to stay away from the areas you’ve treated. Bear in mind, though, that its odour can attract some animals, so you will want to water it in. The treatment is organic and will feed the lawn, releasing nutrients over a period to green grass while reducing the risk of scorching. It also contains grass seed to fill any worn patches. The pack has a built-in applicator for easy spreading.

Best for speed

lawn fertiliser

(Image credit: Amazon)

Miracle-Gro Evergreen Fast Green lawn food

Added iron

A formula that can be applied by hand or spreader and works fast.

Pros:

  • Brings back colour
  • Easy to apply
  • Can be used from March to September

Cons:

  • Doesn’t kill weeds

If your grass isn’t the rich, lush colour it should be, this lawn fertiliser promises to make it greener in just three days. Its effects will last for up to six weeks, though. It contains iron and has a high nitrogen level to create a healthy and desirable colour. The formula also promotes strong roots, which helps protect the grass in drought or heat. While it can be applied by hand, you’ll find it easier to use a spreader to do the job. Bear in mind that iron sulphate can cause staining on paving or clothes, so it needs to be watered into the lawn before anyone walks on it, and you’ll have to deal with any spills promptly.

Best for easy application

lawn fertiliser

(Image credit: Amazon)

Envii Greenkeeper’s Secret liquid lawn fertiliser

Golf course green

A liquid product that promotes strong root growth.

Pros:

  • Works with a hosepipe
  • Safe around kids and pets
  • Covers a large area

Cons:

  • Using a hose won’t suit everyone

This lawn fertiliser promises to feed and fertilise your lawn at the same time. Results are promised in just 7 to 10 days, and application every six weeks is recommended. I like the fact that it’s used with a hosepipe, making it simple to put on the lawn. It’s not a problem if beds get some spray, too. One pack covers a generous 300 square metres, and it’s another of our selections that promises to be safe around children and pets.

Best for robo mowers

lawn fertiliser

(Image credit: Amazon)

Moowy all-season lawn feed

Odour-free

Granular formula for spring, summer, and autumn application. 

Pros:

  • Child and pet safe
  • Steady growth formula
  • No smell

Cons:

  • Spreader helpful 

Owners of robot mowers might like this lawn fertiliser; it promises to avoid a surge in growth with a controlled release over 90 days. This means regular mowing should keep the grass looking neat all the time. You can let the robot do for you, or undertake yourself. The granules can be applied by hand, but you might find it easier with a spreader. You can even let children and pets use the lawn immediately after application. The fact that this product doesn’t have an odour is a bonus.

Best organic

lawn fertiliser

(Image credit: Amazon)

GreenForce Lawn Gold

Slow-release formula

This treatment is based on organic manure and seaweed.

Pros:

  • Essential lawn nutrients
  • Dust-free granules
  • Works across the growing season

Cons:

  • No moss killer

Opt for this lawn fertiliser if you’re keen on providing grass with organic manure and seaweed to feed and stimulate growth, respectively. It doesn’t contain a moss killer but instead relies on the growth of the lawn out-competing the unwanted addition. It’s another product that works by slow release and is designed to green the lawn for up to six weeks. Be aware that while it is safe around kids and pets, it’s another of our selection that requires that they stay off until it’s watered in and dried.

Our verdict

Why you can trust Gardeningetc Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.

Keep your grass green and growing with the help of lawn fertiliser. Our favourite is Miracle-Gro Evergreen Complete 4-in-1 lawn food. As well as feeding and greening the grass, it’ll act to kill moss and weeds for a great looking lawn throughout the growing season.

For easy application, you might want to check out Envii Greenkeeper’s Secret liquid lawn fertiliser. The bottle can be attached to your hosepipe for application, and one pack covers a large area.

Why trust us?

At GardeningEtc, we recommend the best products to enhance your life. As expert curators, we handpick products based on quality and usefulness to positively impact your day-to-day, from cart to doorstep. We take our responsibility seriously – testing products, reading reviews, and sourcing knowledgeable outlets to ensure our selections are worthy of your time and money. We deliver detailed product overviews, balancing objective information with subjective opinions, so making the best choice for your home and lifestyle is as easy as possible.

Sarah Warwick
Freelance writer

Sarah is a freelance journalist and editor writing for websites, national newspapers, and magazines. She’s spent most of her journalistic career specialising in homes and gardens and loves investigating the benefits, costs and practicalities of home improvement. It's no big surprise that she likes to put what she writes about into practice, and is a serial house revamper.