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Best lawn fertiliser UK: which listing fits which lawn

Updated: October 2026

A best lawn fertiliser UK sort by stars puts a hose-end colour spray above an autumn granule. Those products are not in the same race. This page only names one job for each saved listing, who should skip it, and what the score counts. Shelf detail is on the [lawn fertiliser comparison](/hub/fertiliser-soil-and-bark-mulch/lawn-fertiliser). Scores use the saved amazon.co.uk stars and review counts from 21 October 2026. This is not a turf trial. A purchase through our links may earn a commission.

A best lawn fertiliser UK sort by stars puts a hose-end colour spray above an autumn granule. Those products are not in the same race.

Our top picks

Miracle-Gro Miracle-Gro Complete 4 in 1, 360 m²

Best overall

Miracle-Gro Miracle-Gro Complete 4 in 1, 360 m²
8.7/10about £24.94
View offer
A1Lawn A1 autumn winter fertiliser, 10 kg

Alternative

A1Lawn A1 autumn winter fertiliser, 10 kg
8.9/10about £34.20
View offer
Miracle-Gro Miracle-Gro Fast Green 1 litre

Rank 3

Miracle-Gro Miracle-Gro Fast Green 1 litre
9.0/10about £11.70
View offer
On this page
  1. 1.A high score is review volume, not a turf trial
  2. 2.Quick green on a small lawn
  3. 3.Established lawn with named weeds, April to September
  4. 4.Autumn hardening without a weed claim

A high score is review volume, not a turf trial

The score is the star rating divided by five, times 70, plus review volume capped at 30. Fast Green reaches 90 from 4.3 stars and 4,294 ratings, so it is the top pick as a hose-end green-up, not as an autumn feed. Best value among listings with at least 50 ratings, once that top score is set aside, is the 360 m² Complete 4 in 1 (B0FZC3X2F1) at about £0.07 per stated square metre. Five stars from one or two ratings cannot outrank that file, and cannot prove the lawn improved. GreenCare is left out of the value sum because the litre fields disagree. Many lawns need no feed. The checks are on the lawn fertiliser buying guide.

Quick green on a small lawn

Fast Green is a 1 litre hose-end spray at about £11.70, stated cover up to 100 m². Reviewers describe patchy and dog-worn areas as a more even green within a few days. The valve is on or off, the fan is uneven, and there is no level window. The Amazon bullets state no season, no NPK, no weed claim, no moss claim and no pet line. A 1:0:0 mixing field is not an NPK. The maker page states 27-0-0 with iron and March to September (Miracle-Gro Fast Green). Skip it for autumn hardening and for dandelions.
Miracle-Gro Miracle-Gro Complete 4 in 1, 360 m²

Testsieger

Miracle-Gro Miracle-Gro Complete 4 in 1, 360 m²
8.7/10about £24.94
View offer

Established lawn with named weeds, April to September

Only the two Complete 4 in 1 listings name dandelions, white clover and plantain, on established lawns from April to September. The 80 m² tub (B0G3PT35T9, about £15) includes a handheld spreader. One reviewer waited five weeks with the weeds untouched. The 360 m² bag (about £24.94) is the best-value eligible listing and does not include a spreader. Horsetail is not a named weed. Skip both if the lawn is new, weed-free, or it is already autumn. The herbicide line is on weed and feed or a plain fertiliser.

Autumn hardening without a weed claim

For autumn colour with a printed 6-5-10 and no weedkiller, A1 (B00MV0XMJI, about £34.20) has 4.4 stars from 615 ratings and up to 280 m². You bring a spreader and water it in. It is iron-rich and not sold as a moss killer. The 80 m² autumn box has five ratings at 3.8, including scorch. The 360 m² autumn bag has two ratings. GreenCare has one truncated review and clashing litre fields. None of those three is a badge pick. The month split is on spring versus autumn lawn feed.

Common questions

Which listing has the most reviews, and what job is that count about?
Fast Green has 4,294 ratings at 4.3 stars, which is why the score is 90. Those reviews describe a hose-end green-up on patchy lawns, including dog wear, over a few days. They do not describe an autumn 6-5-10, and the Amazon bullets do not claim weeds or moss. The count is large because the job is a quick colour spray, not because the bottle won a turf trial.
Which pack is the lower price per stated square metre for a large lawn?
Among listings with at least 50 ratings, excluding the top score, the 360 m² Complete 4 in 1 is about £0.07 per stated square metre at about £24.94. That figure is why it is the best value on this table. It is still a growing-season weed-and-moss granule for established lawns, not an autumn feed. The autumn 360 m² bag is a similar area price from only two ratings, so it is not in that badge.
Is the 80 m² autumn box a good buy because it is about £12.29?
The price is real, and the box includes a spreader for a stated 80 m². The review file is five ratings at 3.8 stars, with scorch and black patches described when the spread was uneven or the product was called too strong. A low shelf price does not outweigh that sample. Read the label rate, 35 g per square metre maximum, and do not double it.
Which listings are too thinly reviewed to treat 5.0 as a result?
The autumn 360 m² Miracle-Gro bag shows 5.0 from two ratings, and GreenCare shows 5.0 from one rating whose text is cut off. Both scores on our table stay in the 70s because review volume is part of the sum. Treat those stars as a label, not as evidence that the lawn improved.
Does a high score mean the product is safe for dogs?
No. The score is stars plus the number of ratings. A pet-return sentence is printed on the Amazon bullets only for the two Complete 4 in 1 listings: children and pets once the granules are watered in and dried. Fast Green, A1, both autumn boxes and GreenCare do not print that sentence. A question on a page is not an answer.
Why are two Miracle-Gro packs both showing as number 1 in Lawn Fertilisers?
The 80 m² and 360 m² Complete 4 in 1 listings carry the same best-seller line on the saved files. It is one shared rank string, not two separate measurements taken on different days. Use the price, the stated area and whether you need a spreader in the box, not that shared line, to choose between them.

Related pages

How to apply lawn fertiliser

Lawn fertiliser

Lawn fertiliser UK: what to check before you buy it

Spring vs autumn lawn fertiliser: which month fits

Weed and feed or lawn fertiliser: which box to buy

Sources

Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are the saved amazon.co.uk figures for the seven listings, not a live crawl on 21 October 2026. A score is stars plus review count, not a turf trial. Iron in a fertiliser is not an approved moss killer. A pet-return line is only what the bullets print.

  1. RHS, lawn care in spring and summer (retrieved 21 October 2026)
  2. RHS, lawn care in autumn (retrieved 21 October 2026)
  3. RHS, lawns in September (retrieved 21 October 2026)
  4. RHS, dead patches in lawns (retrieved 21 October 2026)
  5. RHS, moss in lawns (retrieved 21 October 2026)
  6. Fertilisers Regulations 1991 (retrieved 21 October 2026)
  7. GOV.UK, manufacturing and marketing fertilisers (retrieved 21 October 2026)
  8. HSE, pesticides in the garden and home (retrieved 21 October 2026)