The best rose fertilisers, compared.
Top pick: HaziQ Westland-title rose food, 1 kg Updated October 2026.
A rose fertiliser is a nutrient product for roses in a UK garden. You buy it as granules, manure-style pellets, a liquid for the watering can, or sticks. Border roses and patio pots are the usual jobs. The Royal Horticultural Society feeds border roses in March or April and again after the first flush, at about 70 g per square metre, then mulches about 10 cm clear of the stems when the soil is poor or bloom is weak. Pots often need a liquid every fortnight from mid-spring to late summer, and feeding stops after August so frost does not catch soft growth. Judge a pack by the job, the format, a printed nitrogen–phosphorus–potassium line and a measurable rate, and keep ordinary feed off the foliage. A coated six-month granule is not the same calendar as a manure pellet. A small bottle is a weak sole feed for a dozen shrub roses, and a large sack is a poor fit for two patio pots. What to check is set out in the [rose fertiliser buying guide](/hub/fertiliser-soil-and-bark-mulch/rose-fertiliser/sub/rose-fertiliser-buying-guide).
A rose fertiliser is a nutrient product for roses in a UK garden. You buy it as granules, manure-style pellets, a liquid for the watering can, or sticks. Border roses and patio pots are the usual jobs.
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Personal buying guide
Question 1 of 2
How many roses are you feeding?
This 1 kg listing uses Westland Rose High Performance wording in its title, but the brand field says HaziQ and the manufacturer is shown only as WL. That mismatch makes it difficult to know whether you are comparing the same pack sold through established Westland channels. The 5.0 average comes from three ratings and there is no review text in the saved listing, so it is not meaningful evidence of performance. At £11.99, it also costs more than several better-documented granule and liquid options in this set. Horse manure and a natural plant stimulant are named, but there is no online NPK, dose or organic certification. Buy only if the seller page, delivered pack and return terms resolve the identity and instructions before use.
Pros
Cons
Best for: A buyer prepared to verify the seller, packaging and label identity before opening the product.
Less suitable: Anyone wanting a well-documented Westland listing, meaningful review evidence or clear online instructions.
Specifications
Common questions
Is this a Westland pack?
The title uses Westland Rose High Performance Plant Food 1 kg. The brand field is HaziQ and the manufacturer field is WL.
Does it print a dose or an NPK?
No. There is no gram rate and no NPK in the saved listing. The organic question has no answer. Horse manure and natural plant stimulant are named.
What do the reviews say?
The star line is 5.0 out of 5 from 3 reviews. The saved listing has no review text.
Devonia rose fertiliser sticks offer 30 pre-measured spikes that you push into the soil, with a claim of feeding for up to 12 weeks. The format removes pouring and weighing, which may appeal if you have a small number of plants and want a tidy application. The 110 g pack is compact, but the listing does not say how many sticks each rose or pot needs in the captured data. Its 5.0 score comes from one rating and there is no review text, so it cannot support a performance conclusion. The Amazon bullets also provide no NPK analysis, while the question about use in pots is unanswered. Treat the physical label as decisive and do not assume one stick fits every container size.
Pros
Cons
Best for: A gardener who prefers a tidy pre-measured format and will follow the pack's plant-size instructions.
Less suitable: Anyone relying on review evidence, needing a transparent nutrient analysis or assuming all pots take the same number of sticks.
Specifications
Common questions
How do you use these sticks?
The bullets say insert the spike into the soil near the plant base. They are pre-measured and claim results lasting up to 12 weeks. The potted-rose question has no answer.
How many sticks are in the pack?
Number of items is 30. Item weight is 110 g. There is no unit-count line.
What do the reviews say?
The star line is 5.0 out of 5 from 1 review. The saved listing has no review text.
The Westland 1 litre liquid suits roses that you want to feed through a watering can, especially containers where a large granule carton would be awkward. It has a 4.7 rating from 487 reviews, and UK reviewers often mention more buds and greener leaves. A liquid gives you control over each watering session, but it also asks you to measure and repeat the job more often than a long-release granule. The Amazon field only shows 1:X rather than a usable millilitre dose, so you need to read the physical label before mixing. Some reviewers find the manure-like smell noticeable and the measuring fiddly. There is also a report of a bottle arriving with a broken seal and leakage, which should be treated as a faulty delivery rather than used.
Pros
Cons
Best for: Patio roses and gardeners who prefer a measured liquid feed through a watering can.
Less suitable: Anyone wanting a low-effort, twice-seasonal border feed or an online listing with a complete dilution instruction.
Specifications
Common questions
Does the bottle print a dilution rate?
The mixing-ratio field prints 1:X. No millilitre rate is in the saved listing. Reviews describe weekly or fortnightly use in a watering can; those intervals are review statements.
Is it labelled for pets?
The listing asks whether it is safe for pets and has no answer text.
What do the first 50 UK reviews mention?
The star line is 4.7 out of 5 from 487 reviews. The first 50 UK bodies often mention more buds and greener leaves. Complaints include a manure-style smell, fiddly measuring, and one leaked bottle with a broken seal.
The Miracle-Gro 2-in-1 eco-refill is a low-cost refill rather than a complete ready-to-use bottle, and reviews indicate that you need a suitable sprayer. At £4.49 it is the cheapest listing in this set, but the recorded 36 g weight and 1,248-item field are clearly not useful measures of how much treatment you receive. The 4.7 rating is based on only 31 reviews, with six saved UK bodies, so the star average carries limited weight. Some reviewers describe improved roses and value from refilling an existing bottle. One comment mentions clearer new growth after black spot, but that does not show that this plant food cures or replaces treatment for disease. With no NPK or practical dose in the bullets, the refill only makes sense if its physical instructions and your sprayer are compatible.
Pros
Cons
Best for: Someone who already owns a compatible spray bottle and wants a small refill for ornamental plants.
Less suitable: A first-time buyer without a sprayer or anyone looking for a conventional root feed with a clear online dose.
Specifications
Common questions
Is this a complete bottle?
The title is an eco-refill. Item weight is 36 g and number of items is 1,248. Reviews say you need a spray bottle.
Does it print an NPK or a dose?
No NPK is in the bullets. The mixing-ratio field prints 1:0. No millilitre rate is printed.
What do the UK reviews in the saved listing say?
The star line is 4.7 out of 5 from 31 reviews. In 6 UK bodies, people mention a cheaper refill and improved roses. One review said new growth came back clearer of black spot. Two texts are one word.
This £23.99 Topline bundle pairs 3 kg of rose pellets with two 500 ml bottles of feed-and-protect concentrate, making it the largest mixed programme in the set. The 1:67 mixing field is more informative than the missing ratios on several rivals, although the bullets still give no millilitre or gram rate. A 4.7 average looks strong, but it comes from only 29 ratings and just three short saved UK texts. The bundle may be convenient if you have enough roses to use both the solid feed and concentrate. Its listing markets help with black spot, but plant food is not a substitute for hygiene, pruning decisions or an approved plant-protection product where one is needed. The target-species field oddly says horse, so the physical labels matter more than that corrupted Amazon field.
Pros
Cons
Best for: A gardener with several roses who intends to use both pellets and a measured concentrate.
Less suitable: Small patios, buyers wanting one straightforward feed or anyone expecting fertiliser alone to control black spot.
Specifications
Common questions
What is in this bundle?
The bullets name a 3 kg Westland High-Performance rose plant food box and a Westland Rose Feed & Protect 2-in-1 concentrate as 2 x 500 ml, plus a Topline card in the title. Item weight is 4.5 kg.
Does the protect bottle replace a fungicide programme?
The listing markets the second bottle to help deter black spot. That is a listing claim. It is not a fungicide programme in this file.
What do the UK reviews in the saved listing say?
The star line is 4.7 out of 5 from 29 reviews. Only three short UK texts were saved, all praise. One also mentions tomatoes. There is no complaint text to aggregate.
The 3 kg Miracle-Gro carton is a practical season feed for several border roses, with the listing calling for two applications and claiming up to three months of feeding. Its 4.6 rating comes from 2,896 reviews, the broadest evidence base in this set, and UK reviewers frequently report greener leaves and more flowers. Extra magnesium is named, although the Amazon bullets do not print an NPK analysis or a gram rate. The carton also appears usable for pots and containers, but a large box makes most sense when you have more than one rose to feed. Review complaints include damp-damaged cardboard and occasional delivery of a different general feed. One reviewer also reports a pot rose dying after the recommended amount, so you should follow the pack carefully rather than treating granules as harmless.
Pros
Cons
Best for: Gardeners feeding several established roses or shrubs who prefer a twice-seasonal granule.
Less suitable: Someone with one small patio pot, limited dry storage or a need for a clearly printed online dose.
Specifications
Common questions
How often does this carton say to apply it?
The bullets say apply just twice a season, at the first sign of flower buds and at the second flush, and that the granules feed for up to 3 months. No gram rate is printed.
Is an NPK printed on the listing?
No. The bullets name extra magnesium. One review calls it NPK plus magnesium. That is a review line, not a listing analysis.
What do the UK reviews in the saved listing say?
The star line is 4.6 out of 5 from 2,896 reviews. In the first 50 UK bodies, people often mention more blooms and greener leaves. Complaints include a wrong general feed being sent, a cardboard carton that soaks up water, and one pot rose that died after the recommended amount.
This Topline bundle combines 900 g of coated rose-and-shrub granules with 800 ml of liquid feed, so it covers a long-release base and a shorter liquid top-up in one order. The listing claims six months for the granules and up to two weeks for the liquid, but it does not specify the liquid dilution. At £16.99, it can be convenient if you genuinely intend to use both formats rather than buying a bundle for one component. Its 4.6 rating is based on 111 reviews, enough to be more informative than the very thin listings in this set but still well behind the major cartons and bottles. The organic-matter wording does not establish certified organic status, and the pet-safety question is unanswered. You should therefore treat the two labels separately and avoid guessing a dose from the headline claims.
Pros
Cons
Best for: Gardeners managing several roses who already plan to use both coated granules and liquid feed.
Less suitable: Someone seeking one simple product, a fully stated online dose or confirmed pet-safety information.
Specifications
Common questions
What is in the bundle?
The title is 900 g continuous-release granules and 800 ml concentrated liquid, with a Topline card. Item weight is 1.99 kg. Number of items is 2.
Does it print a dilution rate?
The mixing-ratio field says dilution instructions are not specified. The liquid bullet claims up to 2 weeks and healthier plants in 7 days. The granule bullet claims a 6-month smart release.
Is it labelled pet friendly?
The listing asks whether it is pet friendly and has no answer text.
Topline's twin pack supplies 6 kg of horse-manure rose pellets, a quantity aimed at several established roses rather than one or two containers. The listing says you can sprinkle the pellets on topsoil or add them to compost when planting, while keeping them off foliage. Its 4.6 rating comes from 68 reviews, and the 11 saved UK texts mention easy scooping, flowering and a milder smell than expected. The pack gives no gram rate or NPK analysis online, so its large size does not remove the need to read the label. Horse manure is named, but no organic certification is provided. At £19.99 it may suit a sizeable rose bed, whereas storing and using 6 kg would be disproportionate for a small patio.
Pros
Cons
Best for: Larger rose beds where a gardener can use and store two 3 kg bags of pellets.
Less suitable: One or two patio pots, buyers wanting a printed online nutrient analysis or anyone assuming manure means certified organic.
Specifications
Common questions
How do you apply these pellets?
The bullets say apply directly to the top soil on established roses or add to the compost when planting. The specific-uses line says sprinkle around the plant and avoid foliage. No gram rate is printed.
Is it organic?
The listing asks whether it is organic and has no answer. The title and bullets name horse manure. No certifier is named.
What do the UK reviews in the saved listing say?
The star line is 4.6 out of 5 from 68 reviews. In 11 UK bodies, people mention easy scoops, flowering, and a milder smell than expected. Several texts are one line. There is no leak or plant-death report in those 11 bodies.
AXpower's 1 kg granules are a budget rose-and-shrub feed with a stated coverage of roughly 20–25 medium plants or up to 30 square metres. The listing names nitrogen, phosphate, potassium, magnesium and iron, but gives no percentages, so it is not a complete NPK analysis. Its up-to-six-week claim sits between short liquid feeding and the longest coated-granule claims in this set. At £4.99, the carton is inexpensive and the sprinkle-and-water-in method is straightforward. However, the 4.6 average is based on only eight ratings and the saved listing contains just one UK review body. That single reviewer reports abundant bloom, but the evidence is too thin to predict consistent results.
Pros
Cons
Best for: A cost-conscious gardener who wants a small granule carton for roses and ornamental shrubs.
Less suitable: A buyer who prioritises a robust review sample or a fully quantified nutrient analysis.
Specifications
Common questions
Does this carton print an NPK?
The bullet names nitrogen, phosphate, potassium, magnesium and iron. No percentages are printed.
How much ground does 1 kg cover?
The coverage line says about 20–25 medium-sized plants or up to 30 square metres of garden beds. The feed claim is up to 6 weeks. Sprinkle and water in.
What do the reviews say?
The star line is 4.6 out of 5 from 8 reviews. The saved listing has one UK text, which calls it excellent rose food with abundant bloom.
Empathy After Plant rose feed is positioned for use at the roots when planting, rather than as a large seasonal carton for established borders. The 1 litre listing carries 4.5 from 255 reviews, with UK comments describing use in pots and improvement in weaker roses. Its title says RHS endorsed, but the Amazon data does not provide a millilitre rate or an NPK analysis. The item-form field confusingly says both granules and liquid even though the title and volume identify a 1 litre product. That makes the physical label particularly important before you apply it. Packaging is the recurring weakness: reviews mention torn wrapping, caps that fail to reseal and bottles arriving with broken seals and missing liquid.
Pros
Cons
Best for: Gardeners planting or supporting a small number of roses who want a root-applied liquid.
Less suitable: Buyers who need unambiguous online instructions or who receive a bottle with any sign of leakage.
Specifications
Common questions
Is this a liquid or a granule pack?
The title and item type say 1 litre After Plant rose food. The item-form line prints Granules, Liquid. Liquid volume is 1 litre and item weight is 1.14 kg.
How does the listing say to apply it?
The application-method line says directly on the roots when planting. No millilitre rate is printed. The mixing-ratio field reads 1:0:0.
What do the UK reviews in the saved listing say?
The star line is 4.5 out of 5 from 255 reviews. In 19 UK bodies, people mention weaker roses improving and pot use. Complaints include a torn outer wrap, a cap that does not reseal, and bottles arriving with a broken seal and about a quarter missing.
Goulding G60115 is a compact slow-release granule for roses, trees and shrubs, with the listing claiming feeding for up to six months. The pack is recorded as 720 g by unit count and 750 g by item weight, so the exact net quantity is not fully clear from the Amazon data. Its 4.4 rating comes from 143 reviews, and some UK reviewers describe the granules as easy to use. The longer release period could reduce repeat feeding compared with a liquid, provided the label suits your plant and soil. No gram rate or NPK analysis appears in the listing, so application cannot be judged from the product page alone. One reviewer says the contents appear the same as a general-purpose counterpart, while two short reviews simply report poor results.
Pros
Cons
Best for: A small mixed border where one slow-release granule can serve roses and shrubs.
Less suitable: A buyer who wants transparent nutrient figures, a precise online rate or rose-only positioning.
Specifications
Common questions
How much product is in the pack?
The unit-count line is 720 g. The item-weight line is 750 g. The title does not print a pack weight.
Does it print an NPK?
No. The bullets name humics and say it lasts up to 6 months. The mixing-ratio field prints 1:0:0.
What do the UK reviews in the saved listing say?
The star line is 4.4 out of 5 from 143 reviews. In 14 UK bodies, some call it easy and slow release. One review says the contents match a general-purpose twin. Two short reviews say it does not work or is poor.
Eleven amazon.co.uk listings were read for job, format, any printed nutrient line, the dose on the listing, and the review count. This is not a garden trial. No award is given. A 5.0 from one or three reviews is not a ranking, and this page does not name a best rose fertiliser. The weights below follow that reading order. They sum to 100. They do not award a top pick or a best value.
Job and pack size
25%A border fed in spring and again after the first flush is a different buy from two patio pots. A large sack is a poor fit for two pots. A 1 litre bottle is a weak sole feed for a dozen shrub roses. Match the pack to the number of plants before you match the price.
Format
20%Granules or pellets suit a spring and midsummer habit. A liquid suits a watering can every one to two weeks. Sticks suit a small pot where measuring will not happen. A coated granule claimed for six months is not the same calendar as a manure pellet.
Printed nutrients
20%Nitrogen, phosphorus and potassium belong on the pack. If the Amazon bullets omit the figures, leave them absent. A manufacturer safety data sheet or pack label is not the same line as a blank listing. A mixing-ratio field is not an NPK.
Rate and leaf contact
15%Follow the pack, water the soil, and keep ordinary feeds off the foliage. Do not feed a dry pot, double a slow-release dose, or pile feed and mulch on the stem. Patio feeding stops after August.
Review evidence
20%A large UK review count carries more weight than a 5.0 from one to three reviews. Check the title, the unit count and the item weight before you compare price. Stars are not a laboratory result.
Match the job and the format before you match the star line. A border fed twice a year, a patio pot and a feed-and-protect set are not one list. Prices below are saved amazon.co.uk figures. This is not a laboratory test.
Rose fertiliser on amazon.co.uk is a nutrient product for roses, often also labelled for shrubs. The formats in front of UK shoppers are granules, manure-style pellets, liquids, sticks, and sets that add a second bottle. You are usually keeping border roses, climbers or patio pots.
Patio liquids belong from mid-spring to late summer. The Royal Horticultural Society says not to feed after August. Soft growth is then more exposed to frost. A six-month granule claim does not move that stop.
A 5.0 from one or three reviews, with no saved review text, does not outrank 4.6 from 2,896 ratings. Read the review count before the star.
Black spot is Diplocarpon rosae. Leaf hygiene, mulch and cultivar choice are the controls the Royal Horticultural Society describes. A protect bottle in a bundle is not a fungicide programme.
Name the plants before you name the pack. Border roses in the UK are fed in March or April and again after the first flush, at about 70 g per square metre where the soil is poor or bloom is weak, then mulched about 10 cm clear of the stems. Patio roses are fed more often, usually a liquid every fortnight, and that feeding stops after August. Granules and pellets are scattered and watered in. A liquid is diluted for a watering can.
A specified fertiliser needs a statutory statement: identity, nutrients, marketer, quantity and safe use. That is the Fertilisers Regulations 1991. Defra’s 19 March 2026 announcement consulted on a future framework. It is not the rule on the shelf today. If the Amazon bullets omit an NPK, leave it absent. Westland’s rose liquid safety data sheet states 6–3–9.5 with magnesium and iron. The Miracle-Gro continuous-release 900 g declaration is 22-7-14.
Three typical situations, each with a recommendation from this comparison.
You will feed in spring and again after the first flush, and you have more than one established rose. The 3 kg Miracle-Gro carton is about £9.99, with 4.6 from 2,896 reviews. The bullets say twice a season and up to 3 months. They do not print an NPK or a gram rate. The carton needs a dry store.
You will use a watering can every one to two weeks and stop after August. Westland rose liquid, 1 litre, is about £6.58, with 4.7 from 487 reviews. The listing prints 1:X, not a millilitre dose, so read the bottle. The pet question is unanswered. A 6 kg sack is the wrong pack for two pots.
You are checking a title that says Westland against the brand field. This 1 kg row is about £11.99. The title uses Westland Rose High Performance. The brand field is HaziQ and the manufacturer is WL. Stars are 5.0 from 3 reviews, with no review text, no dose and no NPK. The named Westland 1 litre is a separate listing.
No listing on this page is a top pick or a best value. The saved listings carry no award. The widest review file is the 3 kg Miracle-Gro carton at 4.6 from 2,896 ratings, about £9.99, with two applications and a claim of up to three months, and no NPK in the Amazon bullets. The Westland 1 litre liquid is about £6.58, with 4.7 from 487 ratings, and the listing prints 1:X rather than a millilitre dose. Five-star rows from one or three reviews, with no saved review text, are not a ranking. Saved shelf prices run from about £4.49 to about £23.99. Compare the pack in your hand, including weight fields that disagree, before you compare the price. None of these notes is a laboratory test.
Not awarded. No source names a best value, and some pack-weight fields disagree.
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 the saved amazon.co.uk figures for the eleven listings, not a live crawl. No listing is named a top pick or a best value. Westland NPK 6–3–9.5 is on the safety data sheet at https://www.gardenhealth.com/wp-content/uploads/2020/10/Westland-Specialist-Rose-Liquid-Plant-Food-1.pdf. The 3 kg fast-acting analysis 10.5-7.5-10.5 is on the pack label at https://www.lovethegarden.com/sites/default/files/content/products/documents/pack_label/miracle-gro-rose-shrub-fast-acting-granules-plant-food-3kg-100063-2026-label.pdf. A 5.0 from one or three reviews is not a ranking.
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.
