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Lawn sand buying guide: moss granule or graded sand

Updated: October 2026

You type lawn sand into amazon.co.uk and two different jobs come back under the same words. One listing is a home-garden mosskiller: sand carrying ferrous sulphate and a little nitrogen, spread at about 80 g per square metre on an established lawn. The next row is a 20 kg bag of graded sand for aeration holes, with a coverage line that says up to 2.5 m². This lawn sand buying guide is the decision order before you open either bag. The [lawn sand comparison](/hub/fertiliser-soil-and-bark-mulch/lawn-sand) holds the five kept prices from this capture. What follows is how to tell the jobs apart, then which pack size matches the lawn you measured.

You type lawn sand into amazon.co.uk and two different jobs come back under the same words.

Our top picks

GREEN UP Vitax Green Up lawn sand, 250 m²

Best overall

GREEN UP Vitax Green Up lawn sand, 250 m²
9.2/10about £31.35
View offer
Vitax Ltd Vitax Green Up lawn sand, 4 kg

Best value

Vitax Ltd Vitax Green Up lawn sand, 4 kg
8.8/10about £10.95
View offer
Scottish Aggregates Scottish Aggregates lawn sand, 20 kg

Alternative

Scottish Aggregates Scottish Aggregates lawn sand, 20 kg
6.0/10about £14.99
View offer
On this page
  1. 1.Decide the job first
  2. 2.Read the label before the price
  3. 3.Match the rate to the lawn
  4. 4.Check the pack against this capture

Decide the job first

If moss is sitting in the grass after a wet winter, you are shopping for an authorised mosskiller, not a pile of grit. The Health and Safety Executive treats lawn sand treatments as plant protection products. A 10 m by 8 m back lawn is 80 square metres. At 80 g per square metre you need about 6.4 kg of granule. At 2-3 kg after spiking you need roughly 160-240 kg, eight to twelve 20 kg bags. The kilogram job is on lawn sand vs sharp sand. Westland and both Vitax Green Up packs are moss-control granules here. Scottish Aggregates prints 0/4 mm graded sand.

Read the label before the price

A home-garden sheet for Westland Lawn Sand² publishes MAPP 17030, 14.1% w/w iron sulphate heptahydrate, 4.0% total nitrogen and 2.8% total iron. A Green Up home-garden sheet publishes MAPP 17043, 4.0% nitrogen and 3.0% iron at 80 g per square metre. Ferrous sulphate sold only as fertiliser is not a moss-control product by itself. This capture does not print a MAPP on every amazon.co.uk row. Westland's mixing-ratio field is 1:0:0, which is not an analysis. Do not copy a professional amenity rate of 125-140 g onto these retail packs. Who each ASIN is for sits on best lawn sand.
GREEN UP Vitax Green Up lawn sand, 250 m²

Testsieger

GREEN UP Vitax Green Up lawn sand, 250 m²
9.2/10about £31.35
View offer

Match the rate to the lawn

Westland and the Green Up home-garden sheet use 80 g per square metre. On that rate a titled 16 kg Westland bag is about 200 square metres, which matches the coverage field of 200 with no unit printed. A 12 m by 10 m rectangle is 120 square metres and needs about 9.6 kg: one 16 kg bag with leftover, or a 4 kg box that runs short. The Scottish Aggregates 20 kg bags print up to 2.5 m² per bag, a heavy dressing claim. How to apply lawn sand keeps the gram method on the granule side. Vitax 4 kg prints Medium and an included 50SQM line. Those figures are printed lines.

Check the pack against this capture

Capture prices: Vitax Green Up 4 kg (B002Q07XOS) about £10.95; Scottish Aggregates 20 kg (B0DYNHLB74) about £14.99; Westland 16 kg (B01AUI5HVI) about £20.91; Scottish Aggregates titled (20, 20kg) (B0DYNDGBHZ) about £24.00; Vitax Green Up 250 m² (B079NW7D9Y) about £31.35. The £24 title is one 20 kg bag: unit count 20,000 g, item weight 20 kg. Westland's title says 16 kg and the item weight says 14.9 kg. The Vitax 4 kg row has a 4 litre field against a 4 kg title. Consumer Rights Act 2015 section 11 says goods must match their description.

Common questions

Is every bag titled lawn sand a mosskiller?
No. In this capture Westland and both Vitax Green Up packs are moss-control granules. Both Scottish Aggregates listings are 0/4 mm graded sand. Reviews on those sand bags say there were no nitrates. The words lawn sand on amazon.co.uk are not proof of iron, nitrogen, or a MAPP number.
How do I tell a MAPP granule from graded sand?
Look for a home-garden rate such as 80 g per square metre, an iron and nitrogen analysis, and a MAPP number on the manufacturer sheet. Westland Lawn Sand² publishes MAPP 17030; a Green Up home-garden sheet publishes MAPP 17043. A bag that only names 0/4 mm sand, a lute, and up to 2.5 m² is sand. This capture does not invent a MAPP on a blank listing.
What coverage should I expect from 16 kg at 80 g per square metre?
About 200 square metres if you actually apply 80 g per square metre. That matches Westland's coverage field of 200, which prints no unit. Measure the lawn first. A 16 kg title versus a 14.9 kg item-weight row in this file is a pack clash, not a second rate.
Why does a 20 kg sand bag say up to 2.5 m²?
That figure is a heavy dressing claim for graded sand, not the chemical 80 g rate. One 20 kg bag at 2.5 m² is about 8 kg per square metre on the printed line, which is a levelling or hole-filling job. It is the wrong number if you wanted moss to blacken this week.
Can I treat the two Scottish Aggregates ASINs as two review samples?
No. B0DYNHLB74 at about £14.99 and B0DYNDGBHZ at about £24.00 share the same 2.9 from 21 ratings and the same ten United Kingdom texts. The file also records the same image URL and the same 0/4 mm bullets. Count the 21 once.
Should I copy 125-140 g from an amenity sheet onto a home pack?
No. The professional Vitax amenity page uses a different analysis and 125-140 g per square metre. The home-garden Green Up sheet and Westland's amateur sheet stay at 80 g. Copying the amenity rate onto these retail packs is how grass burns.
What pack size matches a small lawn versus about 200-250 m²?
The Vitax 4 kg box at about £10.95 prints Medium coverage and an included 50SQM line. Westland's 16 kg title sits on a coverage field of 200 at about £20.91. The Vitax 250 m² pack at about £31.35 prints 250 square metres and 20.2 kg. Those are printed lines in this capture, not a lab yield.

Related pages

Lawn sand for moss

Lawn sand

Best lawn sand: moss granule, or skip the sand bags

How to apply lawn sand at 80 grams per square metre

Lawn sand vs sharp sand: grams against kilograms of sand

Sources

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.

  1. RHS, Moss in lawns (retrieved 20 October 2026)
  2. RHS, Lawn care in autumn (retrieved 20 October 2026)
  3. HSE, Using pesticides in your garden (retrieved 20 October 2026)
  4. HSE G212, ferrous sulphate label phrases (retrieved 20 October 2026)
  5. Westland Lawn Sand² sheet (retrieved 20 October 2026)
  6. Vitax Green Up home-garden label (retrieved 20 October 2026)
  7. Consumer Rights Act 2015, section 11 (retrieved 20 October 2026)
  8. HSE pesticide databases (retrieved 20 October 2026)