The best compost soils, compared.
Top pick: Munnie multi-purpose compost 60 L Best value: Munnie multi-purpose compost 60 L – Lowest pence per stated litre, about 15.6p, at about £9.34, if you check the parcel. Updated October 2026.
Compost soil on amazon.co.uk is bagged multi-purpose potting compost for pots and hanging baskets. It is not a home-made heap, and it is not a tool. You tell a suitable bag by the job, the peat wording, the litres you can carry, and whether a dry mix soaks water. Multi-purpose compost is general potting. Fine seed needs seed compost. A shrub that stays in one pot needs John Innes. Acid-loving plants need ericaceous compost. A bed needs a soil improver. Peat-free applies only when the bag says so. Organic or eco-friendly does not mean peat-free, and a line about using less peat is not that line. A 50 to 60 litre sack is a manageable carry without a car. Larger fills are doorstep loads. If a pack count disagrees with the title, keep both figures. Do not turn a second pack into extra litres. How to match the type, the litres and the words on the bag is set out in the [compost soil buying guide](/hub/fertiliser-soil-and-bark-mulch/compost-soil/sub/compost-soil-buying-guide).
Compost soil on amazon.co.uk is bagged multi-purpose potting compost for pots and hanging baskets. It is not a home-made heap, and it is not a tool.
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Personal buying guide
Question 1 of 2
Where are you using it?
Munnie’s 60 litre multi-purpose compost is the best value in this set on the stated litres: £9.34, about 15.6p a litre, at 4.6 from 2,045 reviews. The listing also says Number of Packs 2 and a unit count of 60,000 g, and it does not say the order is 120 litres, so check the parcel before you plan the pots. A bullet says the blend enables a reduction in the use of peat, and it names vermiculite and wetting agents. That line is a reduction, and the bag still has to say peat-free before you treat it as one. The organic-materials wording names no certifier. Several reviewers describe a fine mix for seedlings, potatoes, and flowers. Others report split or holed bags, and one two-pack arrived as mixed brands. At 14.9 kg it is a doorstep sack, and a genuine two-pack would be a heavier carry than the title alone suggests.
Pros
Cons
Best for: You want the lowest pence per stated litre, and you will check whether one 60 litre bag or two packs arrive.
Less suitable: You need the words peat-free on the bag, or you cannot risk a pack count that fights the title.
Specifications
Common questions
Does two packs mean 120 litres?
The listing says Number of Packs 2, a 60 litre title, and a unit count of 60,000 g. It does not say the order is 120 litres. Show both figures.
Is this bag peat-free?
The bullet says the blend enables a reduction in the use of peat. It does not say peat-free, and it names no peat percentage.
What do reviewers report about the bags?
Several describe a fine mix for seedlings, potatoes, and flowers. Others report split or holed bags, and one two-pack arrived as mixed brands.
The Growmoor 50 litre bag is the top pick in this set when you want one sack for pots and baskets and you can carry the listed 12 kg. On the stored amazon.co.uk file it is £9.25, about 18.5p a litre, with 4.5 from 7,425 reviews. The bullets name seeds, cuttings, containers, beds, borders, pots, and hanging baskets, and they do not say peat-free or give an NPK. The first 50 review texts match the 60 litre Growmoor file, and both files show the same 4.5 from 7,425, so read that block once rather than as two tests. Reviewers in that shared block often describe a fine mix. One reviewer thinks the compost contains peat, which is a comment, not the label. A later look at the live page on 19 October 2026 showed a different shelf price and review count; this comparison keeps the stored £9.25 and 7,425.
Pros
Cons
Best for: You want one 50 litre bag for patio pots or baskets, and you can carry 12 kg from the doorstep.
Less suitable: You need the bag to say peat-free, or you want a review file that is separate from the 60 litre Growmoor listing.
Specifications
Common questions
Does the listing say this 50 litre bag is peat-free?
No. The bullets describe nutrients, an open texture, and water retention. They do not say peat-free. One reviewer thinks the compost contains peat. That line is a review, not the label.
What jobs does the listing name?
The bullets name seeds, cuttings, and containers, and also beds, borders, pots, and hanging baskets. Indoor plants and vegetables are questions on the listing. The saved listing does not answer them.
Are the reviews only about the 50 litre bag?
The first 50 review texts match the 60 litre Growmoor file, and both files show 4.5 from 7,425. Treat that block as shared review text.
This 60 litre Growmoor listing is £13.98, about 23.3p a litre, with a stated weight of 14 kg and country of origin United Kingdom. The bullets match the 50 litre Growmoor file: seeds, cuttings, containers, beds, borders, pots, and hanging baskets, and still no peat-free line or nutrient analysis. The saved listing repeats the same 50 review texts and the same 4.5 from 7,425, so the star row is not a second sample. You pay £4.73 more than the stored 50 litre price for 10 extra litres on the title, which makes this the dearest price per litre in the set. The model number and the 14 kg weight are what differ on the listing. Flower beds, vegetable gardens, and indoor plants appear only as unanswered questions. Choose it when you specifically want the 60 litre variant and you have already accepted the shared reviews.
Pros
Cons
Best for: You want the 60 litre Growmoor variant, you can carry 14 kg, and you will not treat the star row as a separate test.
Less suitable: You are choosing on price per litre, or you need a peat-free statement on the bag.
Specifications
Common questions
Is the 60 litre listing a separate review set from the 50 litre bag?
No. The saved listing repeats the same 50 review texts and the same 4.5 from 7,425 line as the 50 litre Growmoor file. The model number and the 14 kg weight are what differ on the listing.
Does the listing name a peat-free mix?
No. The bullets match the 50 litre Growmoor listing and do not mention peat. Country of origin is given as the United Kingdom.
What does the listing say it is for?
Seeds, cuttings, containers, beds, borders, pots, and hanging baskets. Flower beds, vegetable gardens, and indoor plants appear only as unanswered questions.
The Growmoor 180 litre listing is titled as three 60 litre bags at £30.00, about 16.7p a litre, with 4.4 from 767 reviews and country of origin United Kingdom. The listing says three packs. Reviews include orders that arrived as one or two bags, and one order of mixed 40 litre and 60 litre bags, so count the sacks on the doorstep before you treat the delivery as 180 litres. Several reviewers say that once the compost is dry, water sits on the surface and does not soak in. Others describe a fine mix that held moisture and grew sweetcorn, basil, and spinach. The bullets say added nutrients and do not give an analysis or a peat-free line. One review title says peat-free; that wording is not on the listing. There is no listed weight, so you are ordering a doorstep load without a kilogram figure for the carry.
Pros
Cons
Best for: You want a larger fill for outdoor pots, and you will count the bags when they arrive.
Less suitable: You need every order to be three full 60 litre bags, or you want a mix that soaks as soon as it arrives dry.
Specifications
Common questions
Does the order always arrive as three 60 litre bags?
The title says 3 x 60 litre bags and the listing says three packs. Reviews include orders that arrived as one or two bags, and one order that arrived as mixed 40 litre and 60 litre bags.
What do reviewers say about watering?
Several say that once the compost is dry, water sits on the surface and does not soak in. Others describe a fine mix that held moisture and grew sweetcorn, basil, and spinach.
Does the listing say the compost is peat-free?
No. The bullets say multi-purpose compost with added nutrients. One review title says peat-free. That is not on the listing.
Laeto’s listing is a 120 litre multi-purpose compost at £24.99, about 20.8p a litre, with 4.3 from 1,857 reviews. The bullets call it an organic planting mix for houseplants, vegetables, seedlings, pots, beds, and lawn top dressing, and they name no certifier and no peat-free line. The saved listing does not list a weight. Reviews do not always describe one 120 litre sack: people report 40 litre bags, a mix of 40 litre and 20 litre bags, and two bags set against one 50 litre sack. Several describe a strong farmyard, mildew, or chemical smell and say they would not use it indoors. Others describe a fine mix that plants grew in. One reviewer expected a peat-free mark and did not find one. One review alleged glass and mildew, which is a single report, not a recall.
Pros
Cons
Best for: You want a large stated volume for outdoor pots, and you will check the bag sizes when the order arrives.
Less suitable: Indoor plants, a single sack you can count on as 120 litres, or a bag that prints peat-free.
Specifications
Common questions
Does the listing say the 120 litre bag is peat-free?
No. The bullets say an organic planting mix and a loam-based structure. They do not say peat-free. One reviewer expected a peat-free mark on the bags and did not find one.
Do reviewers receive one 120 litre sack?
Not always. Reviews describe 40 litre bags, a mix of 40 litre and 20 litre bags, and two bags compared with one 50 litre sack. The title still says 120 L.
What smell do reviewers describe?
Several describe a strong farmyard, mildew, or chemical smell and say they would not use it indoors. Others describe a fine mix that plants grew in.
Five amazon.co.uk listings were scored from the stored pages and the UK review notes already on file. A later look at one 50 litre listing on 19 October 2026 showed a different shelf price and review count; the score uses the stored file, about £9.25 and 4.5 from 7,425. There is no laboratory test. Peat wording, organic materials and a finished volume are the seller's claim unless a review contradicts them. None of the five files prints peat-free or an NPK. The highest score is the top pick. The best value is the lowest pence per stated litre, and it does not also take the top score. The weights below sum to 100.
Amazon evidence
30%Star rating on amazon.co.uk, then whether that listing's review file is its own. Munnie at 4.6 from 2,045 takes the most of this block. Growmoor 50 L at 4.5 from 7,425 is the largest count, with a deduction because the first 50 review texts match the 60 L file. Growmoor 60 L carries the same star line and loses more of this block. Laeto at 4.3 from 1,857 is a large file with a lower star row. Growmoor 180 L at 4.4 from 767 is the smallest file.
Listing honesty
25%A stated litre size that agrees with the listed weight, a pack count that agrees with the title, and peat wording you can see. Conflicts deduct. Munnie prints Number of Packs 2 against a 60 L title and a 60,000 g unit count. Laeto's title says 120 L while reviews describe 40 L and 20 L bags. A missing fertiliser analysis and a missing peat-free line deduct on every row, because every row is silent on both. Naming a reduction in peat use, as Munnie does, is clearer than silence, and it is still not a peat-free claim.
Review outcome
25%Comments that match the job score higher when the sample can be read on its own. A fine mix for pots scores. Shared Growmoor text cannot be read twice. Dry compost that sheds water, short deliveries, a strong smell, split bags, and one mixed-brand two-pack are deductions. One Laeto review alleged glass. That is one review, not a recall.
Value
20%Stored GBP price against the litres the listing states. Munnie at about £9.34 is about 15.6p a litre and takes this block, with the pack-count conflict left in the honesty block. Growmoor 50 L at about £9.25 is about 18.5p a litre and the lowest clear spend for one sack whose weight matches the litres. Growmoor 180 L at about £30.00 is about 16.7p a litre and loses ground because some orders arrived short of three bags. Laeto at about £24.99 is about 20.8p a litre on a volume the reviews dispute. Growmoor 60 L at about £13.98 is about 23.3p a litre, the dearest in the set.
Match the job before you match the star line. Multi-purpose compost, seed compost, John Innes and ericaceous compost are not one list. Prices below are the stored amazon.co.uk shelf prices. This is not a laboratory test.
Compost soil here means bagged multi-purpose potting compost for UK pots and baskets. It is not home-made heap compost and it is not a tool. You judge a bag by the job, whether it says peat-free, the texture, and the price per litre. Multi-purpose compost is general potting. Fine seed needs seed compost, which is finer and lower in feed. A shrub that stays in one pot needs John Innes. John Innes is loam-based, and traditional recipes include peat unless the bag says peat-free.
Organic materials, an eco-friendly bag and a reduction in peat use are not a peat-free line. The bag has to say peat-free. None of these five listings does.
A bullet that says seeds does not make the bag seed compost. Seed compost is finer and lower in feed. Multi-purpose is general potting.
Number of Packs 2 beside a 60 litre title is not 120 litres unless the listing says so. A 3 x 60 litre title is not three bags until you count them.
Multi-purpose is the job of every bag here. Growmoor 50 L and 60 L name seeds, cuttings, containers, beds, borders, pots and hanging baskets. Munnie names indoor and outdoor plants, seeds, vegetables, pots and baskets, and says the blend enables a reduction in the use of peat. That is not peat-free. Laeto's bullets say an organic planting mix for houseplants, vegetables, seedlings, pots, beds and lawn top dressing, with no certifier and no peat-free line.
Price per litre from the stored shelf price and the stated litres is about 18.5p for Growmoor 50 L at about £9.25, 15.6p for Munnie 60 L at about £9.34, 16.7p for Growmoor 180 L at about £30.00, 20.8p for Laeto 120 L at about £24.99, and 23.3p for Growmoor 60 L at about £13.98. One 50–60 L sack in these files sits about £9 to £14. The larger fills are the 120 L and 180 L titles. A later amazon.co.uk view of Growmoor 50 L differed from the stored £9.25. The table keeps the stored file.
Three typical situations, each with a recommendation from this comparison.
Balcony gardeners want one 50–60 litre bag delivered to the door. Growmoor multi-purpose compost 50 L is the top pick at about £9.25, listed at 12 kg, with 4.5 from 7,425 reviews. The bullets name pots, baskets, beds, seeds and cuttings. They do not say peat-free. The review texts are shared with the 60 litre Growmoor file, so read that block once.
Allotment buyers looking at a larger fill care about volume, split sacks and whether water soaks in. Growmoor multi-purpose compost 180 L is titled as three 60 litre bags at about £30.00, about 16.7p a litre, with 4.4 from 767 reviews. Some orders arrived short of three bags. Several reviews describe dry compost that sheds water. There is no listed weight and no peat-free line.
Houseplant owners should treat smell as a limit. Laeto's listing names houseplants, and several reviews describe a strong farmyard, mildew or chemical smell and say they would not use it indoors. Munnie names indoor and outdoor plants at about £9.34, with 4.6 from 2,045 reviews, and it does not say peat-free. Number of Packs is 2 against a 60 litre title, so check the parcel before you use it in the house.
The top pick is Growmoor multi-purpose compost 50 L at about £9.25. The listing states 50 litres at 12 kg, about 18.5p a litre, and amazon.co.uk shows 4.5 from 7,425 reviews. The review texts match the 60 litre Growmoor file, so that star line is read once. The best value is Munnie multi-purpose compost 60 L at about £9.34, about 15.6p a litre, if you check whether one bag or two packs arrive. Growmoor 180 L is about 16.7p a litre when the three bags arrive. Growmoor 60 L is the dearest per litre here. Laeto's 120 litre title is disputed by reviews that describe smaller bags. None of these bags says peat-free, and none prints an NPK. This is not a laboratory test.
Munnie multi-purpose compost 60 L
Lowest pence per stated litre, about 15.6p, at about £9.34, if you check the parcel.
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 sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the five stored amazon.co.uk listings. A later view of the 50 litre Growmoor listing on 19 October 2026 differed; the table keeps the stored figures. Peat-free, organic and volume lines are seller claims unless a review contradicts them. This is not a laboratory test.
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.
