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Best liquid lawn fertiliser

Updated: October 2026

You have six liquids on amazon.co.uk and you want one bottle, or a clear skip, before you spend about £8.90 to about £39.95 on your lawn. Best liquid lawn fertiliser here means a fit for a job in this capture, not a laboratory ranking and not a 24-hour winner. The [liquid lawn fertiliser comparison](/hub/fertiliser-soil-and-bark-mulch/liquid-lawn-fertiliser) holds the prices and stars from 19 October 2026. This page says who each bottle is for, and who should walk past a 5.0 from one truncated review.

You have six liquids on amazon.co.uk and you want one bottle, or a clear skip, before you spend about £8.90 to about £39.95 on your lawn.

Our top picks

Miracle-Gro Miracle-Gro Fast Green concentrate, pack of 2 × 1 L

Best overall

Miracle-Gro Miracle-Gro Fast Green concentrate, pack of 2 × 1 L
9.2/10about £13.54
View offer
Westland Westland Safelawn Liquid, 1 L

Best value

Westland Westland Safelawn Liquid, 1 L
8.8/10about £8.90
View offer
Miracle-Gro Miracle-Gro EverGreen Fast Green Spray & Feed, 1 L

Alternative

Miracle-Gro Miracle-Gro EverGreen Fast Green Spray & Feed, 1 L
8.6/10about £11.70
View offer
On this page
  1. 1.There is no lab winner
  2. 2.Growing-season can picks
  3. 3.The hose-end spray
  4. 4.Who should skip GreenCare

There is no lab winner

None of these listings was tested in a lab for this site. A 5.0 from one review does not outrank 4.6 from 627. Westland is 4.4 from 134. The hose spray is 4.3 from 4,294. The twin concentrate is 4.6 from 627. Each GreenCare title is 5.0 from one truncated United Kingdom line. Capture prices stay put: about £8.90, £11.70, £12.95, £13.54, £19.95 and £39.95. A shop cross-check is not an amazon.co.uk price. If a round-up calls SafeLawn the safest lawn feed, that pick is often the granular bag, not this 1 L liquid. Do not copy the hose bottle’s 27-0-0 onto Westland or GreenCare.

Growing-season can picks

The top pick is the Miracle-Gro Fast Green concentrate, two 1 L bottles at about £13.54, when you have no hosepipe and you will dilute in a watering can from March to September. Reviewers often describe greener colour in a few days to about two weeks. The capture has no millilitre rate. One review says an uneven pass with a coarse rose may burn the grass. Best value is Westland Safelawn Liquid 1 L at about £8.90 if the printed area holds: about 9 pence per square metre, against about 12 pence for the hose bottle and about 7 pence for the twin pack only if each litre covers 100 m². The printed rate is 50 ml per 4.5 L for 5 m². The brand sheet is NPK 6-2-4 and says it will not kill weeds. Some of the 26 UK texts saw no change after two to four weeks, and one sprayer failed to pick up the thick liquid. A 60 m² front lawn with a can and no hose is one of those two. Follow a printed 50 ml line and Westland is the cheaper click. Feed more than once and accept a missing millilitre field, and the twin pack is the top pick. Neither is an autumn formula.
Miracle-Gro Miracle-Gro Fast Green concentrate, pack of 2 × 1 L

Testsieger

Miracle-Gro Miracle-Gro Fast Green concentrate, pack of 2 × 1 L
9.2/10about £13.54
View offer

The hose-end spray

The hose-end spray at about £11.70 fits a hose owner who will watch the bottle empty across up to 100 m². The 2025 label is 27-0-0 with iron. The first 50 UK texts include connectors that pop off, leaks, no level marks, and bottles that stay half full after 30 minutes. Skip it with no outside tap. The longer argument is on watering can or hose.

Who should skip GreenCare

Skip all three GreenCare listings if you needed a proven litre, a printed NPK, or more than one review. They share GC-GFEED, 5 ml per litre, and a 5.0 from one line. Prices are about £12.95, £19.95 and £39.95. Every attribute block says 10,000 ml and 5 kg, and the bullets name both 500 m² and 1,000 m². If you still want an autumn liquid, read the cap. The season clash is on autumn liquid lawn fertiliser. None of these six feeds kills moss.

Common questions

Which bottle is the top pick in this set?
The Miracle-Gro Fast Green concentrate pack of two at about £13.54, if you will dilute in a watering can between March and September and you accepted a missing millilitre field. It is 4.6 from 627, not a lab result. Skip it if you needed a printed 50 ml line before you buy, or if you are shopping after the growing season.
Which is best value if the stated areas hold?
Westland Safelawn Liquid 1 L at about £8.90, about 9 pence per square metre against about 12 pence for the hose bottle, only if the printed 100 m² holds. The twin pack can look cheaper per square metre, about 7 pence, only if each litre covers 100 m². GreenCare has no firm cost per square metre because the litres conflict.
Who should skip the hose-end spray?
Anyone without a hosepipe, and anyone who will not watch the bottle level. The first 50 UK texts include pop-off connectors, leaks, an on/off trigger with no marks, and leftover concentrate after 30 minutes. Several reviewers poured it into a watering can after the head failed. That is a workaround, not the listing.
Who should skip the three GreenCare titles?
Anyone who needed a proven 5 L or 10 L, a printed NPK, or more than one truncated review. All three share 10,000 ml and 5 kg in the fields, coverage lines for both pack sizes, and a 5.0 from one United Kingdom text. They are autumn-labelled concentrates, not a growing-season top pick.
Does 5.0 from one review beat 4.6 from 627?
No. The GreenCare star line is one truncated text. The concentrate pack is 4.6 from 627 with the first 50 UK texts in the saved listing. Stars without a sample are not a reason to skip the growing-season bottles.
Is Westland Safelawn Liquid the same as SafeLawn granules?
No. The 1 L liquid is a different product from the granular bag. Round-ups that call SafeLawn the safest lawn feed are often talking about the granules. Do not treat that bag as this bottle, and do not treat the liquid as a weedkiller. The sheet says it will not kill weeds.
Do any of these kill moss?
No. None of the six listings claims to kill moss, weeds, or leatherjackets. A moss killer is a plant protection product. If autumn moss is the job, you have left this comparison.

Related pages

Liquid lawn fertiliser buying guide

How to apply liquid lawn fertiliser

Liquid lawn fertiliser

Autumn liquid lawn fertiliser after August in the UK

Liquid lawn fertiliser watering can or hose choice

Sources

Public UK and maker sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the six amazon.co.uk listings captured on 19 October 2026. A pet-friendly review is not a guarantee. The GreenCare litre fields are not reconciled. Westland NPK 6-2-4 is the brand sheet, not a figure printed on that amazon capture. The hose-end 27-0-0 is the 2025 label, not a figure for the concentrate or the autumn titles. The Farming Rules for Water bind agricultural land managers in England, not a typical householder.

  1. RHS spring and summer lawn care (retrieved 19 October 2026)
  2. RHS autumn lawn care (retrieved 19 October 2026)
  3. The Fertilisers Regulations 1991 (retrieved 19 October 2026)
  4. HSE garden pesticides (retrieved 19 October 2026)
  5. Water Supply (Water Fittings) Regulations 1999 (retrieved 19 October 2026)
  6. Westland SafeLawn technical sheet (retrieved 19 October 2026)
  7. Miracle-Gro Fast Green Spray & Feed 2025 label (retrieved 19 October 2026)
  8. GOV.UK Farming Rules for Water (retrieved 19 October 2026)