The best lawn sands, compared.
Top pick: Vitax Green Up lawn sand, 250 m² – Highest score: 4.5 from 39 reviews, scaled to 90, with 250 square metres printed on a 20.2 kg moss-control pack. Best value: Vitax Green Up lawn sand, 4 kg – Lowest price among the three moss-control granules, about £10.95, for a small established lawn. Updated October 2026.
Lawn sand in a UK garden centre is usually a home-garden mosskiller: sand carrying ferrous sulphate and a little nitrogen, spread by the gram on an established lawn. The same search also returns graded horticultural sand for aeration holes, and that sand does not kill moss by chemistry. You tell them apart on the label. A moss-control pack shows an authorisation number, an iron and nitrogen analysis, and a rate such as 80 g per square metre. A bag that only says sand is a top dressing, not that treatment. The Health and Safety Executive treats lawn sand treatments as plant protection products. You follow the label: established turf, the growing season, moist soil, and no drought, frost or imminent heavy rain. Moss returns unless shade, compaction and wet soil change. A heavy dressing after spiking is measured in kilograms per square metre, not at the gram rate of a chemical lawn sand. Which job you actually need is set out in the [lawn sand buying guide](/hub/fertiliser-soil-and-bark-mulch/lawn-sand/sub/lawn-sand-buying-guide).
Lawn sand in a UK garden centre is usually a home-garden mosskiller: sand carrying ferrous sulphate and a little nitrogen, spread by the gram on an established lawn.
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Personal buying guide
Question 1 of 2
What job do you need done?
The Vitax Green Up 250 m² pack is a 20.2 kg moss-control granule at about £31.35, with 250 square metres on the coverage field. Across 39 amazon.co.uk reviews the star line is 4.5, scaled to 90, from seven United Kingdom reviews read for this listing. That is the highest score here, and it is not a laboratory ranking. Reviewers call it easy and say it worked. One review says the first bag partly worked and the second bag did not, so a high average is not a guarantee on every lawn. The how-often and grass-type listing questions are unanswered, and the bullets only name the 250 square metre pack. The brand field is GREEN UP while the manufacturer field is VITAX. It is the top pick when the printed 250 square metres matches the lawn you measured. It is not a sand top dressing.
Pros
Cons
Best for: A measured lawn near 250 square metres when you wanted a moss-control granule rather than 0/4 mm sand.
Less suitable: A tiny patch better served by the 4 kg box, or anyone who needed horticultural sand after spiking.
Specifications
Common questions
What size is this pack?
The title and included line say 250 square metres. Item weight is 20.2 kg. Unit count is 20,200 g. The brand field is GREEN UP and the manufacturer field is VITAX.
Does the listing print how often to apply it?
No. The how-often and grass-type listing questions are unanswered. The bullets only name the 250 square metre pack.
What do the United Kingdom reviews say?
Seven reviews were read. Reviewers call it easy and say it worked. One review says the first bag partly worked and the second bag did not.
The Vitax Green Up 4 kg box is a moss-control granule at about £10.95, with a Medium coverage field and an included line that says 50SQM. Across 30 amazon.co.uk reviews the star line is 4.3, scaled to 86, from eight United Kingdom reviews read for this listing. That is not a laboratory result. Those reviews call it reliable and say moss died and grass looked green. One review prefers another moss method when the patch is large, so this box is a small-lawn job rather than a whole-garden treatment. The bullets say apply from April to September. The how-often listing question is unanswered. The liquid-volume field says 4 litres while the title and weight say 4 kg, and the listing does not reconcile that. It is the best value here for a small established lawn when you wanted a granule rather than 20 kg of sand.
Pros
Cons
Best for: A small established lawn or a 50 m² patch when you want a moss-control granule at the entry price.
Less suitable: A large mossy lawn, or anyone who wanted graded sand for aeration.
Specifications
Common questions
What coverage does this 4 kg box state?
The coverage field says Medium. The included line says VITAX LAWN SAND BOX 50SQM 5LS50. The listing shows both and does not reconcile them.
When do the bullets say to apply it?
From April to September, for spring and summer moss control. The how-often listing question is unanswered.
What do the United Kingdom reviews say?
Eight reviews were read. Reviewers call it reliable and say moss died and grass looked green. One review prefers another moss method for a large patch.
Westland lawn sand is listed as a 16 kg moss-kill and green-up granule at about £20.91, with a coverage field of 200 and no unit on that field. The item-weight row says 14.9 kg while the title and unit count say 16 kg, and the listing shows both. Across 268 amazon.co.uk reviews the star line is 4.2, scaled to 84, from 39 United Kingdom reviews. That is the deepest review sample among the moss-control granules here, and it is still not a laboratory test. Reviewers describe moss turning black and grass greening. The same reviews complain of split or short bags, lumps, stones, and over-application burning grass. One review reports a red stain on Portland Stone. One United Kingdom review quotes 80 g per square metre. The bullets do not print a rate, and the mixing-ratio field is 1:0:0, which is not an analysis. It is the large-lawn granule when you will measure the plot and keep the product off stone.
Pros
Cons
Best for: An established lawn around the printed 200 coverage figure when you will weigh 80 g per square metre.
Less suitable: Turf under a year old, a patio you cannot protect, or a job that only needed graded sand.
Specifications
Common questions
Is this pack 16 kg?
The title and unit count say 16 kg and 16,000 g. The item weight field says 14.9 kg. The liquid volume field says 20,000 millilitres. The listing shows all three and does not reconcile them.
Does the listing print a rate?
The bullets do not. The coverage field is 200 with no unit. One United Kingdom review quotes 80 g per square metre. The mixing-ratio field is 1:0:0 and is not an analysis.
What do the United Kingdom reviews say?
Thirty-nine reviews were read. Reviewers describe moss turning black and grass greening. Criticisms include split or short bags, lumps, stones, and grass burnt by over-application. One review reports a red stain on Portland Stone.
The Scottish Aggregates 20 kg bag is 0/4 mm graded sand, titled (1, 20kg), at about £14.99. The listing sells it for aeration, top dressing and core filling, alone or mixed with loam. Coverage is printed as up to 2.5 m² with a 20 kg bag, which is a heavy dressing claim rather than a chemical 80 g rate. Across 21 amazon.co.uk reviews the star line is 2.9, scaled to 58. The same ten United Kingdom reviews appear on the (20, 20kg) title, so you should not add the 21 ratings twice. Reviews say it is sand without nitrates. The listing also says it reduces moss, but those reviews do not treat it as a mosskiller. Country of origin is the United Kingdom. This is a courier-weight sand bag for holes after spiking, not a ferrous-sulphate granule.
Pros
Cons
Best for: Filling aeration holes or a small top dressing when you already know you wanted sand.
Less suitable: Anyone who searched lawn sand for this week's moss kill.
Specifications
Common questions
Is this a 20 kg bag?
Yes. The title says (1, 20kg). The unit count is 20,000 g. The item weight is 20 kg.
What do the bullets say the sand is for?
0/4 mm graded sand for aeration, top dressing and core filling, used alone or mixed with loam. The listing also says it reduces moss. Reviews say it is sand without nitrates.
Are the 21 ratings only for this title?
No. The same 2.9 from 21 line and the same ten United Kingdom reviews are on the (20, 20kg) title.
This Scottish Aggregates listing is titled (20, 20kg) at about £24.00, but the unit count is 20,000 g and the item weight is 20 kg, so this page does not treat the title as twenty bags. It prints the same 0/4 mm bullets, the same up-to-2.5 m² coverage, and the same lute, rake or brush method as the listing at about £14.99. The star line is the same 2.9 from 21 reviews, with the same ten United Kingdom reviews, and the score is again 58. The stated job says greening and moss control, while the other listing says aeration and top dressing, but the reviews still describe sand without nitrates. At about £24.00 you pay more for a conflicting title, not for a second independent sample.
Pros
Cons
Best for: A single 20 kg sand bag if this title is the one in stock and you already wanted 0/4 mm sand.
Less suitable: Anyone reading the title as 400 kg, or anyone who wanted iron for moss.
Specifications
Common questions
Is this twenty 20 kg bags?
No. The title says (20, 20kg). The unit count is 20,000 g and the item weight is 20 kg. This page does not treat the title as twenty bags.
Is this the same product as the listing at about £14.99?
The pages share the 0/4 mm bullets, the 2.9 from 21 line and the same ten United Kingdom reviews. The title and the price differ.
What coverage is printed?
Up to 2.5 m² with a 20 kg bag. An 850 kg bulk sack up to 50 m² is listed as another size, not this listing.
Five amazon.co.uk listings were scored from the stored pages. Shelf date 20 October 2026. There is no laboratory test. The number on each card is the star line scaled to 100: 4.5 from 39 becomes 90. A MAPP number, an iron analysis and a gram rate are not added on top of that figure. The top pick is the highest score. The best value is the lowest price among the three moss-control granules, and it does not also take the top score. Where a title and a weight disagree, both stay. The weights below sum to 100. They describe how this page reads a listing. They are not a second score on top of the star line.
Amazon evidence
50%The card score is the amazon.co.uk star line scaled to 100, then noted against how many United Kingdom reviews were read. Vitax Green Up 250 m² is 4.5 from 39, scaled to 90. The 4 kg box is 4.3 from 30, scaled to 86. Westland is 4.2 from 268, scaled to 84. Both Scottish Aggregates titles are 2.9 from the same 21 reviews, scaled to 58. A star line is not a laboratory test.
Stated job
25%A moss-control granule and 0/4 mm sand are different jobs. The three granule listings are read as moss control. The two sand listings are read as aeration and top dressing, even where a bullet says the sand reduces moss. Reviews on the sand say there are no nitrates. That split decides who should skip a listing. It is not added to the star score.
Pack and coverage
15%Printed weight, coverage and clashes are copied as they stand. Westland shows 16 kg in the title and 14.9 kg as item weight. The 4 kg box shows Medium and a 50SQM line. The (20, 20kg) title has a 20 kg unit count. A missing rate or an unanswered how-often line stays missing.
Value
10%Pounds for the job you wanted. Among the three moss-control granules the 4 kg box is about £10.95, Westland about £20.91 and the 250 m² pack about £31.35. The best value is that 4 kg box. The sand at about £14.99 is cheaper than Westland and is not scored as a mosskiller.
Buy the job before you buy the star line. A moss-control granule and graded horticultural sand are not one product. Prices below are amazon.co.uk shelf prices on 20 October 2026. This is not a laboratory test.
Lawn sand on amazon.co.uk is two products under one search. A chemical lawn sand is a granule for moss and a light green-up on an established lawn. Graded horticultural sand is for drainage and for filling holes after you spike the turf. The RHS says that sand is not builders' sand, and that moss returns unless shade, compaction and wet soil change. Ferrous sulphate sold only as a fertiliser is not, by itself, a moss-control product.
Two listings in this set are 0/4 mm sand. Reviews say they have no nitrates. A lawn-sand title does not add ferrous sulphate.
80 g per square metre is a mosskiller rate. A sand dressing after spiking is about 2–3 kg per square metre in the RHS guide, and a 20 kg bag here prints up to 2.5 m².
That title is about £24.00 with a 20 kg unit count. It is one bag, and it shares the 2.9 from 21 reviews with the listing at about £14.99.
Name the job before you name a bag. Moss on an established lawn needs an authorised mosskiller. Clay that puddles needs horticultural sand, or a loam-sand-compost dressing after spiking, at about 2–3 kg per square metre in the RHS autumn guide, not 80 g of chemical lawn sand. HSE treats lawn sand treatments as plant protection products. Westland Lawn Sand² publishes MAPP 17030, 14.1% w/w iron sulphate heptahydrate, 4.0% total nitrogen and 2.8% total iron.
Westland and the Green Up home-garden sheet use 80 g per square metre. At that rate a 16 kg bag covers about 200 square metres. Measure the lawn. The Westland amazon.co.uk listing prints a coverage field of 200 with no unit, and the bullets do not print a rate. One United Kingdom review quotes 80 g per square metre. The 4 kg Vitax box has a Medium coverage field and an included line that says 50SQM, and those two lines are not reconciled.
Three typical situations, each with a recommendation from this comparison.
You have moss on an established lawn and you want a labelled moss-control granule, not a bag that only says sand. Vitax Green Up lawn sand, 250 m² is the top pick at about £31.35, with 4.5 from 39 reviews and 250 square metres on the coverage field. The how-often question on the listing is unanswered, and one household said a second bag failed.
Clay that puddles needs horticultural sand, or a loam-sand-compost dressing after spiking, not 80 g of chemical lawn sand. Scottish Aggregates lawn sand, 20 kg is 0/4 mm graded sand at about £14.99, with coverage printed as up to 2.5 m². The star line is 2.9 from 21 reviews, shared with the other Scottish Aggregates title, and reviews say it has no nitrates.
A small established lawn does not need a 20 kg bag. Vitax Green Up lawn sand, 4 kg is the best value at about £10.95, with 4.3 from 30 reviews. The included line says 50SQM and the coverage field says Medium. It is a poor fit if the moss covers a large lawn.
The top pick is Vitax Green Up lawn sand, 250 m², at about £31.35. It has the highest score in this set, 90, from 4.5 on 39 amazon.co.uk reviews, and the coverage field says 250 square metres on a 20.2 kg pack. The best value is the Vitax Green Up 4 kg box at about £10.95, 4.3 from 30 reviews, for a small established lawn. Westland is the 16 kg listing at about £20.91 with the largest review file, 4.2 from 268, and a weight clash between 16 kg and 14.9 kg. The two Scottish Aggregates listings are 0/4 mm sand at 2.9 from the same 21 reviews, not a ferrous sulphate mosskiller. None of these scores is a laboratory test.
Vitax Green Up lawn sand, 250 m²
Highest score: 4.5 from 39 reviews, scaled to 90, with 250 square metres printed on a 20.2 kg moss-control pack.
Vitax Green Up lawn sand, 4 kg
Lowest price among the three moss-control granules, about £10.95, for a small established lawn.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK and maker sources used for this page in October 2026. Prices, stars and review counts are from the five amazon.co.uk listings captured on 20 October 2026. A star line is not a laboratory test. The amenity rate is not the rate for these home packs. The (20, 20kg) title is not twenty bags.
Expert source (DIY & tools): Lee Burkhill (Garden Ninja) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the listings. This is not a laboratory test.
