The best citrus soils, compared.
Top pick: Topline Citrus Potting Mix (2 × 10 L) Best value: UK GROW Citrus Potting Mix (25 L) – Lowest pence per litre among the 20–25 litre bags, about 92p, at about £22.99. The 3.7 from 11 reviews is shared with the 10 litre size. Updated October 2026.
Citrus soil on amazon.co.uk is a bagged potting mix for lemons, limes, oranges, calamondins and kumquats in containers. It is not a liquid feed, and it is not garden soil. Most buyers here grow on a patio or in a conservatory and bring the pot indoors before frost, so the mix has to drain and then cope with a cool, drier winter. A useful bag is peat-free, mildly acid to neutral, with loam or clay plus perlite or grit. Stars on a 1 litre pouch are a weak signal. The Royal Horticultural Society also accepts a peat-free John Innes 2 or 3 with about 20 per cent grit. That home mix is not a listing here. A 10 litre bag is a top-dress or a small step up. A 20–25 litre purchase is the realistic fill for one established patio tree. The [citrus soil buying guide](/hub/trees-and-palms/citrus-soil/sub/citrus-soil-buying-guide) puts volume, drainage, a peat-free line and price per litre in that order. Scores use the review file, the written spec, patio volume and price per litre.
Citrus soil on amazon.co.uk is a bagged potting mix for lemons, limes, oranges, calamondins and kumquats in containers. It is not a liquid feed, and it is not garden soil.
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Personal buying guide
Question 1 of 2
What are you filling?
The Topline twin-pack is two 10 litre bags at £20.00, which is £1 a litre and a little above the Westland twin-pack on the same shelf date. The listing says the mix is peat-free, enriched with Seramis clay granules, free-draining, and meant for pots and containers indoors or outdoors. The star line is 4.6 from 14 reviews, and the raw file holds six texts. Those texts mention new growth on a lemon within a week, an orange the buyer called rejuvenated, and a mix described as well balanced. One bag arrived split, which that reviewer blamed on the courier, and another buyer doubted the bags were a full 10 litres and thought there was not much compost for the money. Perlite or grit is not named, so the drainage claim rests on Seramis and the words free-draining. Fourteen reviews are a real sample, and they are still a long way short of Westland’s 415.
Pros
Cons
Best for: You want a peat-free 20 litre citrus mix that states indoor or outdoor use, and you can accept a 14-review file.
Less suitable: You want the largest review sample, or you need perlite named on the bag as well as Seramis.
Specifications
Common questions
Can this mix be used indoors?
The listing says it is for pots and containers, indoors or outdoors.
Is it peat-free?
Yes. The listing says the mix is made without peat.
How much compost is in the order?
The listing says you get 2 × 10 L bags. Stated weight is 6 kg.
The POT CULTURE 20 litre bag is £19.99, about £1 a litre, and the listing names P35 perlite and gritty sand in a mix it calls high-porosity and pH balanced. That is the clearest grit wording in this set. Peat-free is not stated, so that field stays unknown, and Seramis is not mentioned. The star line is 4.6 from three reviews, and the raw file holds one text, the same text as the 1 litre ASIN. That reviewer said a lemon was doing well after repotting and that it was too early for five stars. No delivery damage is described. A 4.6 on three shared reviews is not a larger sample than Westland’s 4.5 from 415, and it does not show that this 20 litre size was the bag in the pot. The unit-count field says 1,000 g, which conflicts with the 11.5 kg weight and the 20 litre volume. The listing brand field is Invigortex.
Pros
Cons
Best for: You want a 20 litre citrus mix that names perlite and grit, and you will not treat three shared stars as a finished trial.
Less suitable: You need a peat-free line on the listing, or a review file that is not shared with the 1 litre pouch.
Specifications
Common questions
What does the listing say about drainage?
It names P35 perlite and gritty sand, and calls the mix high-porosity.
Is it stated as peat-free?
No. Peat-free is not stated on this listing, so the field stays blank.
How many reviews support the 4.6 score?
The listing shows 4.6 from 3 reviews. The raw file contains one review text, shared with the 1 litre size.
The POT CULTURE 1 litre pouch is £7.99, about £8 a litre, which is the expensive way to buy this formula if you will soon need a patio pot. The listing repeats the 20 litre wording: P35 perlite, gritty sand, and a pH-balanced claim. Peat-free is not stated. A customer question asks about indoor plants, and no answer is in the raw file, so indoor use stays unknown. The star line is the same 4.6 from three reviews as the 20 litre ASIN, with the same single text about a lemon doing well and it being too early for five stars. That text does not say which size was used. Stated weight is 650 g, while the unit-count field says 1,000 g. You are paying pouch prices for a top-up, not for a reviewed 20 litre fill. The listing brand field is Invigortex.
Pros
Cons
Best for: You need a litre or less for a seedling or a top-up and you already know the price per litre.
Less suitable: You are repotting a patio lemon, or you want reviews that clearly belong to this 1 litre size.
Specifications
Common questions
How much mix is this?
The title says 1 litre. Stated item weight is 650 g.
Does the listing say it can be used indoors?
A customer question asks about indoor plants. No answer is in the raw file, so indoor use is not stated.
Is the star rating only for this 1 litre size?
The raw file shows the same 4.6 from 3 reviews and the same review text as the 20 litre ASIN.
The Westland listing is a pack of two 10 litre bags, 20 litres in total, at £18.58 on amazon.co.uk, about 93p a litre. It is the only product in this set with a large review file: 4.5 from 415 reviews, and 50 review texts in the raw file. Those reviews often describe an open, airy mix, and several buyers say a lemon, lime or orange put on growth or flowers after they moved the tree into a larger pot. The listing states a peat-free compost with Seramis granules and perlite for airflow and drainage. A repeated complaint is volume: one buyer found 10 litres short for a year-old lemon in a medium pot, and others reported split, holed or underfilled bags. A few plants slowed or declined after repotting, and those reviews do not isolate the compost as the cause. Indoor use is not stated on the bullets, and the manufacturer page’s loam and zinc lines are not in this Amazon raw file.
Pros
Cons
Best for: You are filling one patio citrus pot and you want the only large amazon.co.uk review file in this set.
Less suitable: You need a stated indoor claim, a single 25 litre fill, or a bag that reviewers have not reported as split or short.
Specifications
Common questions
Is this Westland mix peat-free?
Yes. The listing says the mix is peat-free.
What is in the pack?
It is a pack of two. The stated volume is 20 litres, and the listing says the details apply to each unit.
Does the listing mention drainage ingredients?
Yes. It names Seramis granules and perlite for airflow and drainage.
The single Topline bag is 10 litres at £11.99, about £1.20 a litre, which is a dearer fill than either 20 litre twin-pack in this set. The listing matches the twin-pack on the points that are written down: peat-free, Seramis clay granules, free-draining, and pots indoors or outdoors. The star line is 4.0 from one review, and the raw file contains no review text, so there is nothing to quote about drainage, smell, or how the tree looked afterwards. A 10 litre bag is a top-dress or a small step up, and one Westland reviewer on the other listing found 10 litres short for a year-old lemon in a medium pot. You are buying the stated formula in a smaller pack, without a written buyer account of this ASIN.
Pros
Cons
Best for: You need one 10 litre top-dress or a small pot step, and you already accept that this ASIN has no written reviews.
Less suitable: You are repotting an established patio lemon, or you want buyer comments rather than the listing bullets alone.
Specifications
Common questions
Is this the single-bag Topline mix?
Yes. The listing is one 10 L bag, model 10L, stated weight 3 kg.
Does it contain Seramis?
Yes. The listing says it is enriched with Seramis clay granules.
Are there written reviews in the raw file?
The listing shows 4.0 from 1 review. No review text was in the raw file.
The UK GROW 25 litre listing is £22.99, about 92p a litre, the lowest pence per litre among the 20–25 litre bags on this shelf. The page calls it an acidic, loam-based, free-draining citrus mix and says the pack is a handled bucket with a lid. It also says not to leave the plant standing in water, and to use rainwater where you can. Peat-free, perlite and Seramis are not stated. The star line is 3.7 from 11 reviews, and the same three texts sit on the 10 litre ASIN, so this is one buyer block rather than two. Those texts praise a larger quantity for a bigger tree, fast delivery, and a container that was easy to carry. They also say a plastic bag arrived instead of a bucket and was hard to store. One reviewer said a lemon died after the soil was changed. That is one report after a repot, not a finding that the mix is toxic. The unit-count field says 2 g, which conflicts with the 10 kg weight and the 25 litre volume.
Pros
Cons
Best for: You need about 25 litres for one larger patio tree and you are buying on pence per litre, knowing the review file is mixed.
Less suitable: You need a peat-free line, a bucket you can rely on from the reviews, or the 415-review Westland file.
Specifications
Common questions
Does it come in a bucket?
The listing says a handled bucket with a lid. One review says a plastic bag arrived instead.
Is it described as free-draining?
Yes. The listing says free drainage and a loam-based, acidic compost.
Is peat-free stated?
No. Peat-free is not stated, so that field stays blank.
The UK GROW 10 litre listing is £13.99, about £1.40 a litre, so you pay more per litre than for the 25 litre size of the same brand. The bullets again describe an acidic, loam-based, free-draining mix, a handled bucket with a lid, spring or summer potting-on, and a warning not to leave the plant standing in water. Peat-free is not stated. The star line is the same 3.7 from 11 reviews as the 25 litre ASIN, with the same three texts: a useful larger quantity, a missing bucket, a plastic bag that was hard to store, and one lemon that died after the soil change. Those comments do not show a separate trial of this 10 litre pack. Stated weight is 4 kg, while the unit-count field says 2 g. At this price a 10 litre top-dress is the dearer UK GROW option, and it carries the same unresolved bucket complaint.
Pros
Cons
Best for: You want about 10 litres of the loam-based UK GROW mix and you already accept the shared review file.
Less suitable: You can use 25 litres, you need peat-free on the label, or you want reviews written for this size alone.
Specifications
Common questions
What volume is this size?
The title says 10 L. Stated item weight is 4 kg.
What does the listing say about watering?
Do not leave the plant standing in water. Use rainwater where possible.
Are the reviews unique to the 10 L size?
The raw file shows the same 3.7 from 11 reviews and the same three review texts as the 25 L ASIN.
The Plantalaya pouch is 1 litre at £8.99, about £9 a litre, and the listing says it is a free-draining mix for lemon, lime, orange, mandarin, kumquat and other citrus. It also says indoor and outdoor, including conservatories, patios and balconies, which is more placement detail than most bags here. Named grit, perlite, bark and peat-free status are absent, so you cannot check the drainage recipe from this raw file. There is no customer-review line, so there is no star rating and no text about how a tree responded. Stated weight is 370 g, while the unit-count field says 200 g, and the country of origin is given as the United Kingdom. A 1 litre pouch can top up a windowsill pot. It does not fill a patio container, and you have no buyer comments on this page to judge the mix by.
Pros
Cons
Best for: You want a 1 litre top-up that states indoor and outdoor use, and you accept a page with no reviews.
Less suitable: You need 10 litres or more, a peat-free claim, or any buyer comments before you choose.
Specifications
Common questions
Which citrus does the listing name?
Lemon, lime, orange, mandarin, kumquat and other citrus trees.
Can it be used indoors?
Yes. The listing says indoor and outdoor, including conservatories, patios and balconies.
Is there a star rating?
No customer-review line was in the raw file, so there is no star rating and no review count.
Eight amazon.co.uk citrus soil listings were scored on 19 October 2026 from the stored pages and the review notes already on file. There is no laboratory test. Royal Horticultural Society container advice is context for drainage and peat-free language. It is not a score for these bags. A seller line about more fruit is not scored as a result. The highest score is the top pick. The lowest pence per litre among the 20–25 litre bags is the best value. The 25 litre UK GROW bag is not scored as a better mix than Westland. UK GROW’s two sizes share one block of 11 reviews. POT CULTURE’s two sizes share 4.6 from three reviews. A blank star line on Plantalaya is a gap, not a nought.
Buyer evidence
35%Stars count only with the review file that belongs to that listing. A shared parent rating is one sample, not two. No review line is a gap, not a one-star mix and not a copied score.
Listing spec
30%Peat-free counts only when the listing says it. Named drainage (Seramis, perlite or grit) scores. Indoor use scores only when the bullets say it. A blank line does not become a yes.
Volume for a patio pot
20%A 20–25 litre purchase can fill one established container. A 10 litre bag is a top-dress or a small step up. A 1 litre pouch is a top-up. Pack count does not add a second volume score.
Price per litre
15%Calculated from the stored price and the stated litres on 19 October 2026. Unit price does not lift a thin review file above the only large sample.
Match the bag to the pot before you compare brands. A 10 litre bag is a top-dress or a small step up. A 20–25 litre purchase is the realistic fill for one established patio tree. Drainage should be named on the listing: perlite, grit or clay granules. Peat-free is the default because Royal Horticultural Society container advice already says so, not because a retail ban is in force. Then look at price per litre, and at whether the reviews belong to that size.
Citrus soil is a bagged potting mix for lemons, limes, oranges, calamondins and kumquats grown in containers. It is not a liquid feed and it is not garden soil dug from a border. On amazon.co.uk the bags in this comparison are specialist citrus mixes: Westland with Seramis and perlite, Topline with Seramis, POT CULTURE with perlite and grit, UK GROW described as loam-based, and a Plantalaya 1 litre pouch. A loam-based John Innes No. 2 or No.
A 1 litre pouch is a top-up. POT CULTURE at about £7.99 and Plantalaya at about £8.99 work out at about £8 to £9 a litre. One Westland reviewer found 10 litres short for a year-old lemon in a medium pot. A 20–25 litre bag is the realistic fill for that job.
A multipurpose bag, an olive mix and ericaceous compost are different products. Ericaceous compost is built for rhododendrons and blueberries. Westland says its citrus mix is not for ericaceous plants. Citrus want mildly acid to neutral conditions, about pH 6–6.5, not a rhododendron mix.
Overwatering in winter is a leading way to rot citrus roots. RHS problem advice keeps lemons at or above 10°C and calamondins at or above 13°C. Use rainwater where you can, because hard tap water is alkaline, and do not leave the pot standing in water.
Start with the pot, not the brand. A 10 litre bag is a top-dress or a small step up. A 20–25 litre purchase is the realistic bag for one established patio tree. One Westland reviewer found 10 litres short for a year-old lemon in a medium pot. The 1 litre pouches, POT CULTURE at about £7.99 and Plantalaya at about £8.99, are top-ups at about £8 to £9 a litre. Drainage is the next line on the listing. Citrus roots rot if the pot sits in water.
Royal Horticultural Society container advice is peat-free. England has not banned peat compost at retail. On 19 March 2026 Defra said it would legislate when parliamentary time allows. Buy peat-free because the advice already says so, not because a shop sale is illegal. Westland and both Topline listings say peat-free. POT CULTURE, UK GROW and Plantalaya do not, so those cells stay blank. Citrus want mildly acid to neutral conditions. Thompson & Morgan cite about pH 6–6.5.
Three typical situations, each with a recommendation from this comparison.
You need about 20 litres for one established tree and a review file you can read. Westland is the top pick at about £18.58, peat-free, with Seramis and perlite named, 4.5 from 415 reviews. Some buyers found a 10 litre bag short, and split or underfilled bags are in the texts.
You need a small volume, and a 1 litre pouch is poor value if you will soon repot. The Topline 10 litre bag is about £11.99, peat-free, with Seramis named and indoor or outdoor use stated. It has 4.0 from one review and no review text.
You need the winter watering rules more than a different recipe, and a listing that states indoor use. The Topline twin-pack is about £20 for 20 litres, peat-free, with Seramis named, 4.6 from 14 reviews. Perlite is not named, and one bag arrived split.
The top pick is Westland Citrus Potting Mix, two 10 litre bags, about £18.58. It is peat-free, with Seramis and perlite named, at about 93p a litre, and it is the only large review file in the set: 4.5 from 415 reviews. Split and short-fill complaints keep it off a higher evidence mark. The best value is UK GROW Citrus Potting Mix at 25 litres, about £22.99, about 92p a litre, the lowest unit price among the larger bags. Its 3.7 from 11 reviews is shared with the 10 litre size, peat-free is not stated, and one review says a bag arrived instead of the claimed bucket.
UK GROW Citrus Potting Mix (25 L)
Lowest pence per litre among the 20–25 litre bags, about 92p, at about £22.99. The 3.7 from 11 reviews is shared with the 10 litre size.
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 amazon.co.uk listings stored on 19 October 2026. Garden-centre shelf prices are not Amazon prices. This is not a laboratory test.
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.
