The best rose fertiliser liquids, compared.
Top pick: Westland rose liquid 1 L (second listing) – Highest score among named concentrates with more than 100 reviews: 4.7 from 487, at about £6.58. Best value: Empathy After Plant rose feed 1 L – Next named brand with more than 100 reviews, a different job, at about £6.99 with 4.5 from 255 reviews. Updated October 2026.
Rose fertiliser liquid is a concentrate you dilute and pour onto the soil around roses during the UK growing season. You buy it for pots once the compost charge has faded, and for borders that already had a spring granule and now need a summer boost. A suitable bottle is named for roses, sold as a liquid, and gives a dilution you can measure in millilitres. If the label prints an analysis, read nitrogen, phosphate and potash on that bottle. High potash is the usual shift once buds form. The interval is weekly or fortnightly from mid-spring, and you stop before autumn. Pellets, sticks and a dry carton sold on its own are a different buy. A twin pack, or a box that also contains granules, is not the same as one litre of concentrate. Which job you need is set out in the [rose fertiliser liquid buying guide](/hub/fertiliser-soil-and-bark-mulch/rose-fertiliser-liquid/sub/rose-fertiliser-liquid-buying-guide). A feed does not treat black spot. Keep the solution off the leaves unless the label is foliar, and do not copy one bottle's cap measure onto another.
Rose fertiliser liquid is a concentrate you dilute and pour onto the soil around roses during the UK growing season.
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Personal buying guide
Question 1 of 2
What do you need the bottle to do?
This is the same Westland 20100440 1 L bottle on a second amazon.co.uk listing: £6.49 and 4.8 from 17 reviews. That star line is not deeper evidence than 4.7 from 487 on B08YNZMK7K, and the thin sample pulls this score down. The mixing-ratio field prints 1:0:0, which is not a rate you can pour. The listed weight is 1.3 kg against a 1 L title. Buy this listing only if the live price is clearly lower than the 487-review listing; otherwise use that listing. It is not a second formula and it does not print an NPK on Amazon.
Pros
Cons
Best for: Someone who has already chosen Westland 20100440 and found this listing cheaper on the day.
Less suitable: Anyone treating 4.8 from 17 as a better bottle than the 487-review listing.
Specifications
Common questions
Is this a different formula from B08YNZMK7K?
The model number is 20100440 on both listings. This listing has 17 reviews at £6.49; the other has 487 at £6.58.
Does the listing say it is organic?
The page asks whether the plant food is organic. The listing does not answer.
What dilution is printed?
The mixing-ratio field prints 1:0:0, which is not a usable rate.
Westland’s 1 L rose liquid, model 20100440, is the watering-can concentrate with the long review file in this comparison: 4.7 from 487 amazon.co.uk reviews at £6.58. Maker pages print NPK 6.0-3.0-9.5 and 50 ml in 4.5 L, March to August, soil only; those figures are not on the Amazon listing, where the mixing field shows 1:X. Reviewers use it as a weekly or fortnightly can on patio and border roses. At least one UK text notes a manure scent, and leaky seals or soaked parcels show up in the Amazon reviews. It is the same chemistry as B08VNYKBSG, not a second formula. The bottle does not treat black spot. Skip it if you need a printed high-potash analysis on the Amazon listing or an after-plant root drench.
Pros
Cons
Best for: Patio or border roses that already have a March-to-August watering-can habit.
Less suitable: Shoppers who need a printed 4:4:12 on the listing, or a root drench after planting.
Specifications
Common questions
Is this the same bottle as the other Westland 1 L listing?
The model number is 20100440 on both B08YNZMK7K and B08VNYKBSG. This listing has the 487-review line at £6.58.
What dilution is printed on the listing?
The mixing-ratio field prints 1:X. That is not a usable millilitre rate on these listings.
Does the listing name an NPK?
No numeric NPK is in the listing details. The target species field says roses.
This Topline bundle is 800 ml of rose-and-shrub liquid plus 900 g of coated granules and a card, £16.99, with 4.6 from 111 amazon.co.uk reviews. The title uses Miracle Grow wording; the brand and manufacturer fields say Topline. Dilution is not specified on the listing. Several reviews talk about the granules rather than the liquid. It is two products in one box, not a third chemistry, and rank 4 in Rose Fertilisers is sales volume, not a bloom test. Buy it if you will use both forms this season. Skip it if you only wanted a 1 L watering-can concentrate or a printed millilitre rate.
Pros
Cons
Best for: A border or patio that needs a spring granule base and a summer liquid from one checkout.
Less suitable: Shoppers who only wanted a 1 L concentrate or a printed dilution.
Specifications
Common questions
What is in the box?
The listing is a bundle of 900 g continuous-release granules, 800 ml concentrated liquid, and a Topline card.
Who is the brand on the listing?
The brand and manufacturer fields say Topline. The title uses Miracle Grow wording.
Is a dilution printed?
The mixing-ratio field says dilution instructions not specified.
Empathy APRF1L After Plant rose feed is a 1 L root-zone drench with RHS endorsed in the title, £6.99 and 4.5 from 255 amazon.co.uk reviews. The listing says apply it directly on the roots when planting; the mixing field prints 1:0:0, so the Amazon listing is not a watering-can rate. Item form also says granules as well as liquid. Reviewers use it on pots and on bushes they are moving or reviving. Leaky seals and short fills appear in the Amazon reviews. No numeric NPK is on the listing. It is not a weekly mineral concentrate in the Westland sense, and the endorsement is listing wording, not a laboratory rank.
Pros
Cons
Best for: A newly planted or moved rose, or a pot that needs a root drench rather than a weekly mineral can.
Less suitable: Shoppers who want a printed NPK and a millilitre rate on the Amazon listing.
Specifications
Common questions
What does the title say about the RHS?
The title is Empathy APRF1L RHS Endorsed After Plant Rose Feed 1L. That is the listing wording, not a laboratory rank.
How do you apply it, according to the listing?
The application field says directly on the roots when planting. The mixing-ratio field prints 1:0:0, which is not a usable dilution.
Is an NPK printed?
No numeric NPK is in the listing details.
Doff’s 1 L rose feed concentrate is the only bottle in this comparison that prints an NPK on the listing: 4:4:12 with TE, 15 ml for about nine plants, fortnightly from March to September, at £8.86. The star line is 4.3 from four reviews, so the thin sample pulls the score down. Target species include roses and flowering plants. There is no model number or weight on the listing. Use it if you want a high-potash analysis you can read before you click. Skip it if you need a deep UK review file, or if you were about to copy a 50 ml Westland cap onto this 15 ml dose.
Pros
Cons
Best for: Someone who will only buy a rose liquid if the Amazon listing prints a high-potash analysis.
Less suitable: Anyone who wants hundreds of UK reviews before they pay.
Specifications
Common questions
What NPK is on the listing?
The bullet prints fertiliser NPK 4:4:12 with TE, 1 L, use March to September.
How much do you dilute?
The listing says dilute 15 ml for 9 plants and apply fortnightly.
Can it be used on other flowers?
The target-species field says roses and flowering plants.
Miracle-Gro Rose & Shrub is a twin pack of 800 ml concentrates, 1,600 ml in total, at £11.98. The listing names roses and shrubs, indoor and outdoor. There is no numeric NPK and no mixing ratio on the listing. The star line is 4.0 from one review, so the score is lower. That line is not a quality rank. The model number is 121179. Treat it as a volume buy of a rose-and-shrub liquid, not as a tested winner. Skip it if you need a printed rate, a printed analysis, or a review file thicker than one rating.
Pros
Cons
Best for: Someone who already uses Miracle-Gro rose-and-shrub liquid and wants two 800 ml bottles.
Less suitable: Shoppers who need a printed analysis, a dilution, or more than one review.
Specifications
Common questions
How many bottles are in the pack?
Two 800 ml bottles. The unit count is 1600 ml.
Does the listing name indoor use?
The bullets say the feed is suitable for roses and shrubs, including indoor and outdoor plants.
Is an NPK or dilution printed?
No numeric NPK and no mixing ratio are in the listing details. The star line is 4.0 from 1 review.
Neudorff Organic Rose Feed is a 2 × 1 L concentrate at £26.12, the dearest row on these listings. The title says vegan, child and pet safe; a bullet says certified for organic gardening without naming the Soil Association, OF&G, or another body. There is no star line and no NPK or dilution on the Amazon listing. The UK brand page prints NPK 3-1-5 and 5–10 ml per litre; those figures are not in the Amazon listing. Mixed solution should be used within 24 hours on the maker line. “Pet safe” is listing wording, not a toxicity test in these reviews. Skip it if you need a named control body or a review file.
Pros
Cons
Best for: Someone who wants an organic-titled twin and will accept a missing star line and an unnamed body.
Less suitable: Shoppers who need a named certificate, a deep review file, or a £6–£7 litre.
Specifications
Common questions
Does the listing name a UK organic control body?
A bullet says certified for organic gardening. The listing does not name the Soil Association, OF&G, or another body.
What does the title say about children and pets?
The title includes vegan, child and pet safe. That is listing wording, not a test in these reviews.
How many litres are in the pack?
Two 1 L bottles. The liquid-volume field is 2 L.
UK GROW Premium rose nutrient is a 1 L liquid at £11.99 with no star line on the listing. The bullets name nitrogen, phosphorus and potassium in prose; there is no numeric NPK and no dilution. It is ranked at 30 in Hydroponic Nutrients & Additives, which is a different Amazon aisle from the rose-fertiliser rows. The file is too thin to treat as a weekly rose can. A “slow-release” claim on a liquid is listing wording, not a coated granule. Skip it if you need a review sample or a printed millilitre rate before you pay.
Pros
Cons
Best for: A buyer who specifically wants this UK GROW 1 L and will read the bottle for a rate.
Less suitable: Anyone who needs amazon.co.uk reviews or a printed NPK before they buy.
Specifications
Common questions
Does the listing print an NPK number?
The bullets name nitrogen, phosphorus and potassium in prose. There is no numeric NPK string on the listing.
Where is it ranked on Amazon?
The listing places it at 30 in Hydroponic Nutrients & Additives, and 5586 in Garden.
Is there a star rating in the file?
No rating score or review count is on the listing.
Eight amazon.co.uk listings were scored from the stored pages and the review lines already on file. Shelf date 21 October 2026. There is no laboratory test. RHS, Defra, GOV.UK and maker pages explain form, analysis, dilution and the UK season. They are not a score for these bottles. For a listing with 100 or more reviews, the score is the star rating multiplied by 20. A thinner file takes a deduction. The top pick is the highest remaining score among named concentrates with a review file above 100. The best value is the next-lowest named-brand shelf price with a review file above 100, and a different job from the top pick. The weights below sum to 100.
Amazon star line
60%For a listing with 100 or more amazon.co.uk reviews, the score is the star rating multiplied by 20. A 4.7 line is 94. A 4.5 line is 90. That scale is not a trial of bloom or of black-spot control.
Review sample
40%Fewer than 100 reviews, fewer than ten, or no star line takes a deduction. A 4.8 from 17 on the same 1 L model is not scored above 4.7 from 487. A 4.0 from one review is not a quality rank. A missing line stays a thin file.
Buy the job before you buy the star line. A watering-can concentrate, an after-plant drench, a twin pack and a liquid-plus-granule bundle are not one list. Prices below are amazon.co.uk shelf prices on 21 October 2026. This is not a laboratory test.
Rose fertiliser liquid is a watering-can concentrate, sometimes a twin pack or a carton that also holds granules, that you dilute and pour onto rose soil in the UK growing season. You are matching a job, not a star line. Quality on this shelf is a printed analysis if the label has one, the millilitres that belong to that bottle, and an honest pack.
Westland's maker page is 50 ml in 4.5 litres. Doff's listing is 15 ml for about nine plants. The same cap on the wrong bottle is over-strength, and over-strength solution scorches.
Black spot is a fungus, not a missing nutrient. A rose liquid does not prevent or cure it. Soil-only labels should not be sprayed over the leaves.
Two Westland listings are the same 1 L model. The Topline box is 800 ml of liquid plus 900 g of granules. Neudorff is 2 L. None of those is a cheaper single litre.
A rose fertiliser liquid is a concentrate you dilute and pour on the soil. Pellets, sticks, an all-purpose houseplant liquid and a dry carton sold alone are outside this comparison. Pots want a fortnightly can once the compost charge fades. The RHS puts that fade at about six weeks, then a liquid from mid-spring to late summer, and high potash once buds form. A border that already had March granules wants a summer boost, not a second base feed.
Printed analysis and dilution belong to one bottle. Westland's B&Q page prints NPK 6.0-3.0-9.5 and 50 ml in 4.5 litres. That analysis is not on either Amazon listing of model 20100440, where the mixing fields print 1:X and 1:0:0. Neither is a rate you can pour. Doff prints 4:4:12 with TE and 15 ml for about nine plants. Empathy's listing has no numeric NPK. Do not copy a 50 ml cap onto the 15 ml dose. The two Westland listings are the same 1 L model.
Three typical situations, each with a recommendation from this comparison.
Once the compost charge fades, container roses want a liquid about fortnightly through summer. Westland rose liquid 1 L is the top pick at about £6.58, with 4.7 from 487 reviews. Maker pages give 50 ml in 4.5 litres, March to August, soil only. Those figures are not on the Amazon listing.
A newly planted or moved rose needs a root drench, not a weekly mineral can. Empathy After Plant rose feed 1 L is about £6.99, with 4.5 from 255 reviews and RHS endorsed in the title. The listing says apply it on the roots. The mixing field prints 1:0:0, so it is not a watering-can rate.
Doff rose feed concentrate 1 L is the only bottle here that prints an NPK on the listing: 4:4:12 with TE, 15 ml for about nine plants, fortnightly from March to September, at about £8.86. The star line is 4.3 from four reviews, so the file is thin. Skip it if you need hundreds of UK reviews before you pay.
The top pick is Westland rose liquid 1 L, model 20100440, at about £6.58, with 4.7 from 487 amazon.co.uk reviews. Maker pages print NPK 6.0-3.0-9.5 and 50 ml in 4.5 litres, March to August, soil only. Those figures are not on the Amazon listing. The best value is Empathy After Plant rose feed 1 L at about £6.99, with 4.5 from 255 reviews: an after-plant root drench, RHS endorsed in the title, mixing field 1:0:0. The second Westland listing is the same bottle with 17 reviews. Doff is the only bottle that prints 4:4:12 and a 15 ml dose, from four reviews. Neither award is a laboratory rank.
Westland rose liquid 1 L (second listing)
Highest score among named concentrates with more than 100 reviews: 4.7 from 487, at about £6.58.
Empathy After Plant rose feed 1 L
Next named brand with more than 100 reviews, a different job, at about £6.99 with 4.5 from 255 reviews.
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 eight amazon.co.uk listings as of 21 October 2026. An organic title is not a named control body. A feed does not treat black spot. Maker NPK and dilution lines that are missing on Amazon are marked as maker pages, not as listing text.
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.
