HomeBuying GuidesLawn & GardenThe Best Lawn Fertilisers To Buy For Your Garden - Updated 2022

The Best Lawn Fertilisers To Buy For Your Garden – Updated 2022

Feeding your grass can rapidly become a difficult task. Professional greenkeepers have access to a wide choice of fertilisers for a variety of uses.

It’s no surprise that deciding on the best lawn feed can be difficult for many gardeners.

So, in this article, I’ll tell you which products, based on price and effectiveness, I believe are the best.

Not only that, but I’ll explain why you would use one sort of fertiliser over another and when you should use one type in conjunction with another to keep your grass lush and green all year.

Reviews of the Best Lawn Fertilisers in the UK

Important Note: These lawn fertiliser reviews are based on the assumption that your grass is already in good shape. Even the best lawn fertislier won’t make it better if it’s in bad shape.

Lawn feeds and fertilisers will not be able to penetrate the soil and root zone of the grass due to soil compaction and heavy thatch. As a result, they’ll be useless, and your time and money will have been squandered.

If your grass is overgrown with moss or thatch, or the soil is compacted, you must first address these issues.

With that in mind, here’s a list of the best lawn fertilisers on the market right now:

Evergreen 4 in 1 Complete Lawn Feed


Key Features

Creates a thicker, greener and healthier lawn whilst killing weeds and moss

WaterSmart formula helps absorb water and nutrients more effectively, helping to protect your lawn against drought and stress

Use from April to September


Evergreen’s 4 in 1 Complete Lawn Feed earns my suggestion if you’re searching for an all-in-one lawn feed, weed and moss killer.

It’s high in nitrogen to promote growth and potassium to promote root development for a thicker lawn. In fact, Evergreen claims that their product contains more nitrogen than other feed, weed, and moss killer brands. The advantage is that your lawn will be greener than the competition’s.

However, there are certain drawbacks to having a higher Nitrogen concentration. If used during extended periods of hot, dry weather, it might scorch your lawn. As a result, you must be cautious about when you use it.

Also, because it’s only supposed to be sprayed twice a year, I’d do it in April and September, when there’s plenty of moisture and ideal growing conditions. It’s simple to apply, but it needs to be watered in, so if it doesn’t rain, turn on the sprinklers.

When you use Evergreen 4 in 1 on your grass, you should see effects very immediately. Especially when it comes to the amount of green on your lawn. In only a few days, it’ll be noticeably greener.

If your grass is infested with moss, it will begin to become black. The grass may be affected by the blackening, but this appears to be only transitory.

You may observe that weeds grow quickly following application. This is because of the Nitrogen and Potassium, however they will twist up and die quickly, so don’t be alarmed if you notice rapid growth.

When the weeds and moss are completely dead, you should remove them.

That stated, don’t use this product expecting it would cure your lawn’s ailment. It’s meant to keep weeds and moss at bay; it’s not a panacea for such problems.

Evergreen 4 in 1 Complete, on the other hand, is a fantastic product if your lawn is in good form and you want to keep it that way with no work.

Westland Safe Lawn – Best Lawn Feed for Kids & Pets


Key Features

Organic fertiliser with added lawn seed, made with only natural ingredients

Grass seed will germinate to fill gaps and help create a lusher, thicker lawn

As the grass becomes stronger it will start to outcompete weed and moss

Pack will cover 150 m2


Chemical lawn feeds come with instructions to keep children and pets off the grass until it has been soaked in.

They’re bad for you if you eat them, and some of them contain a lot of iron, which can stain your skin, clothes, and paving.

If you’re hesitant to apply a lawn feed because you have dogs or children, Westland SafeLawn Natural Lawn Feed is the solution.

It’s a 100% natural chicken manure-based product. It also contains plant nutrients and beneficial microorganisms.

Encourages grass to produce strong roots. The grass plant produces more shoots and runners, which produce more grass leaves, resulting in a denser sward, outcompeting moss and weeds.

It aids in the decomposition of dead organic matter. This keeps thatch from forming on the lawn.

It can, however, stink a little because it’s a manure-based fertiliser. Some batches have a stronger odour than others. Although it is safe for children and pets, the smell and protein content may attract some animals, so it’s better to water it in after you’ve applied it. This will get rid of a lot of the odour.

It also takes a bit longer to work than products based on chemicals.

The grass seed in Westland SafeLawn helps to fill up any sparse areas and create a denser sward. Creeping red fescue and dwarf perennial ryegrass make up the grass seed blend, which is excellent for most household lawns.

If you have an ornamental lawn consisting entirely of bents, browntops, and fescue grasses, however, you should avoid applying this product to avoid introducing ryegrass to your lawn.

Give Westland Safe Lawn a try if you’re concerned about the safety of your children and pets after feeding your lawn, or if you prefer organic lawn feed to chemical fertilisers.

Miracle-Gro Liquid Lawn Food

Miracle Gro Liquid Lawn Food

Key Features

Dissolved nutrients lowers the risk of scorching

Easy to apply using the Miracle-Gro Feeder or mixing in a watering can

Use from March to October


The majority of granular lawn feeds and fertilisers require a three-month interval between applications. You can give your grass that additional push when it needs it with water-soluble lawn feeds like Miracle-Gro Lawn Food.

Rather from penetrating the soil, the grass plant uses its roots to consume the nutrients. This type of soluble lawn feed is unique.

The food is sprayed on the grass and takes up residence in the plant’s leaves. As a result, the grass receives an injection of Nitrogen nearly immediately. This adds a lot of lush, green colour to it.

It’s also quite effective!

The amount of nitrogen in total is 36 percent, which is quite significant. Because it’s a soluble chemical, though, the risk of scorching the grass is minimal.

Still, make sure you mix it correctly and don’t use it in hot, dry weather for long periods of time.

It’s meant to be administered once a month to keep the grass nourished. If your lawn is sick, Miracle-Gro recommends applying it every two weeks.

This advice does not sit well with me.

‘Poor Health’ is a broad word. An unhealthy lawn can be caused by a variety of factors, including soil compaction, abundant moss, and excessive thatch.

To get the best benefits from this fertiliser (or any other product), you must first figure out why your lawn isn’t as healthy as it should be and then take efforts to address those concerns.

This is a great tool for providing your lawn a nitrogen boost when it’s needed. However, because of the high nitrogen level, I would not use it as my primary fertiliser.

I would suggest using it in conjunction with a slow-release fertiliser.

Apply a decent grade, slow-release fertiliser initially if your lawn is just short in nutrients. Use this product to provide a boost to your grass as needed.

Scotts Lawn Builder Granular Lawn Feed

Scotts Lawn Builder Granular Lawn Feed

Key Features

Available For All Seasons

Lawns stay thicker and greener for up to eight weeks

Slow release and water smart formula – no surge growth

No scorch fertiliser and no need to water in;

Coverage of up to 100 m sq


Scotts Spring/Summer Lawn Builder Lawn Food and Autumn/Winter Lawn Food are my favourites if you’re searching for a simple, seasonal granular lawn feed.

I’ve always used granular lawn fertilisers as a professional groundskeeper, and each season necessitates a varied percentage of Nitrogen, Potassium, and Phosphate, as well as other nutrients.

The lawn meal Scotts Grass Builder comes closest to that sort of lawn feeding.

Scotts has created a high-nitrogen lawn food for the spring and summer months, when grass growth is at its peak. They also have a high-potassium autumn/winter diet to promote healthy root development and protect the grass from winter stressors.

Both fertilisers are slow-release, which means they gently release nutrients into the soil, providing a consistent supply of nutrients to your grass for up to 8 weeks.

Surge growth, in which the grass consumes all of the nutrients at once and grows too quickly, is avoided.

It’s simple to use and has an anti-scorch ingredient to keep the grass from burning and becoming brown. However, you must use caution while deciding how and when to use it. Don’t overdo it, especially if you’re in a drought.

Scotts Lawn Builder is a great product for both spring and summer and fall and winter feeding.

Lawn Fertiliser FAQs

What is the purpose of grass fertiliser?

In the United Kingdom, most lawns will grow healthily without the use of a lawn fertiliser. However, if you want to improve your lawn’s overall health and beauty, utilising a fertiliser is a good approach to ensure your grass gets the nutrients it needs to stay healthy, green, and lush. Lawn fertiliser used correctly may keep your lawn in good shape and foster robust, dense grass growth. Lawn fertiliser not only improves the aesthetic of your lawn, but it may also aid in the recovery of your turf from wear and tear as well as the impacts of any harsh weather conditions. Keeping your lawn well-fed with a balanced nutrient programme can help keep it from becoming weak, patchy, and thin, which makes it more prone to moss and weeds. Diseases are more likely to harm lawns that are in poor condition.

What are the best fertilisers to use?

There are numerous types of fertiliser available. The most common constituents in lawn fertilisers are nitrogen, potassium, and phosphorus, but they may also include other trace element nutrients that are good to lawns. You must avoid purchasing low-cost fertilisers that are high in nitrogen. Too much nitrogen in a fertiliser will increase the quality of your lawn rapidly, but it will not last in the long run. Fertilisers are often offered in granular or liquid form, with different possibilities for different soil types (i.e. clay or sandy). Lawntech, a Wiltshire-based lawn care company, suggests their own granular fertiliser, which contains a balance of nutrients such as iron, magnesium, and pure hydrated dung. A skilled lawn care technician can determine the appropriate proportion of active chemicals for the season and type of lawn.

When and how often should a grass be fertilised?

The sort of grass you have and the state it is in will determine when you should fertilise it. A once-a-year treatment is available for those who just desire or require a minimal fertiliser treatment. These products release nutrients steadily over time and can be used to nourish your grass from spring to autumn.

Most lawn professionals would recommend feeding your lawn four times a year: once in the early spring (typically around March-April depending on the weather), two more times between May and July, and another in the late autumn (September-November). More nitrogen is needed in the spring to encourage development and a good green colour, while more potassium is needed in the autumn to strengthen the hardiness of the grass plants. Fertiliser mixes with varied amounts of nutrients should be used at different times of the year. When feeding your lawn in the summer, you must consider moisture and temperature levels depending on the type of fertiliser you used in the spring (if it lasts 3 months).

Winter fertilisers can also be purchased to increase the quality of your lawn throughout the colder months. Winter fertilisers typically have a low nitrogen content and may include specific compounds that aid in the digestion of organic matter.

What is the best way to fertilise a lawn?

You can fertilise a lawn by hand, but it’s a challenging operation because it’s impossible to detect if you’ve applied enough fertiliser. Most lawn care pros recommend using a spreader because it can help you spread your fertiliser evenly across the surface and produce greater results. You can utilise a variety of spreaders to get the job done. Shoulder or portable spreaders are ideal for gardens that aren’t rectangular and are very simple to use. Mechanical push-along spreaders can also be used. These spreaders are better suited to large gardens with a lot of fertilisers to distribute. Drop fertilisers feature small holes on the underside through which the feed ‘drops’ onto the grass, whilst rotary spreaders include a spinning mechanism that ‘throws’ or sprays the fertiliser. Liquid fertiliser can be sprayed directly onto the lawn surface and is ideal for use in places where additional nutrients are required.

If you feed your lawn as soon as possible after mowing, the grass will have more time to absorb the nutrients before the next mow. If you mow your lawn after fertilising, the fertiliser may be removed before it has a chance to fully absorb.

It’s not a good idea to fertilise dry turf; the grass plants need moisture in the soil to absorb the nutrients. If the weather has been exceptionally hot and dry, you should hold off on feeding your grass until there has been a significant amount of rain. Many lawn care specialists may additionally recommend wetting in the fertiliser after application to ensure that the feed is fully absorbed.

It’s critical to apply the correct amount of fertiliser. Too much fertiliser can cause your grass to burn or scorch, leaving it shrivelled and charred. If you feed your lawn when there isn’t enough moisture in the soil, such as during the dry summer months, fertiliser can burn or scorch your grass. Quick release lawn feed products have a higher risk of burning than slow release lawn feed products. Professional lawn care companies, such as Lawntech, can calculate the exact amount needed for your garden and ensure that there is no risk of scorching. Professional lawn care specialists will be able to feed your grass properly and evenly, resulting in a green, lush, and healthy lawn rather than a spotty and weak one.

Following the application of lawn fertiliser

Many fertilisers work on a slow-release basis, feeding your lawn for weeks or months after they’ve been applied. The majority of lawn fertilisers are quite safe, and you can use or walk on your grass almost immediately after they’ve been applied. However, you should make sure that the fertilisers you’re using are safe to use near dogs and animals. We recommend not mowing your grass right after an application because this can prevent the feed from settling correctly. Prior to mowing, you should wait at least three days.

When and where shouldn’t you apply fertiliser?

You should not use spring fertiliser in the autumn or winter months since spring fertilisers boost plant growth, which isn’t necessary in the winter when the harsher temperatures and weather conditions can harm new plants. Always make sure you’re using the appropriate feed for the season. Fertilizer should not be applied on frozen or very dry ground since it will not be absorbed effectively. It is important to avoid allowing fertiliser to enter water sources such as rivers or lakes when applying fertiliser, as this might be detrimental.

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