The best vegetable fertilisers, compared.
Top pick: Topline All Purpose Soluble Plant Food, 2 x 1.2 kg Best value: Westland Growmore, 8 kg – At £16.95 it is about £2.12 per kilogram, the lowest unit price here, and the listing bullets do not name vegetables. Updated October 2026.
Vegetable fertiliser is plant food for edible crops: granules, a liquid or a soluble powder that supplies nitrogen, phosphorus and potassium to a bed, a raised bed or a container. UK allotment holders and raised-bed gardeners usually buy an all-purpose or Growmore-type product that names vegetables, rather than a feed made for one crop only. This comparison covers seven amazon.co.uk listings from £7.98 to £23.99. We record whether each listing names vegetables, the format, any NPK a manufacturer page states, the calculated price per kilogram or litre, and the UK star rating with its review count. Several are general feeds. A high star average does not make a houseplant-led bottle a good fit for crops. Products Compared did not run a laboratory test or a growing trial. Miracle-Gro Performance Organics Fruit & Veg granules, 1 kg, are the top pick: the listing names fruit and vegetables, and 1,284 ratings average 4.6. Westland Growmore, 8 kg, is the best-value option at about £2.12 per kilogram, although its bullets do not name vegetables. The [vegetable fertiliser buying guide](/hub/fertiliser-soil-and-bark-mulch/vegetable-fertiliser/sub/vegetable-fertiliser-buying-guide) sets out that decision order.
Vegetable fertiliser is plant food for edible crops: granules, a liquid or a soluble powder that supplies nitrogen, phosphorus and potassium to a bed, a raised bed or a container.
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Personal buying guide
Question 1 of 2
Where will you use the feed?
Topline All Purpose Soluble Plant Food is a pack of two 1.2 kg bags of soluble powder at £14.99, about £6.25 per kg. The listing names flowers, vegetables, shrubs and houseplants, says it mixes with water and claims it covers up to 72 plants. It has only five ratings (4.7 out of 5), and two written reviews, so there is no review pattern to rely on. One reviewer applied three doses to the soil, not the leaves, and says the plants look excellent, and another says it does what it says. The listing gives no dose and no NPK, so you depend entirely on the pack. The listing asks whether it is safe for edible plants and does not answer, so read the pack before you use it on crops.
Pros
Cons
Best for: Growers who are happy to try a new soluble feed and will follow the pack dose
Less suitable: Buyers who want a proven review record, and anyone who needs a stated dose or analysis before buying
Specifications
Common questions
Is this plant food suitable for vegetables?
Yes. The listing names vegetables in the title and says it supports bigger, more nutritious vegetables and fruits.
How do I apply it?
Mix it with water. A reviewer applied three doses to the soil, not the leaves. The listing gives no dose, so follow the pack.
Is it safe for edible plants?
The listing asks this question but does not answer it. n/a. Read the pack before using it on crops.
This pack of two 800 ml bottles (1.6 L) costs £7.98, about £4.99 per litre of concentrate, and carries 3,025 ratings at 4.6 out of 5, the largest review base in the comparison. The listing says it suits the garden and indoor houseplants but does not name vegetables; the manufacturer label, which is outside the listing, does. Most reviewers describe houseplants, pots and flower beds, and only one believes it produced more vegetables. Mixing half a cap or a quarter of a cap per litre is described as fiddly. Two reviewers say the 800 ml bottle looks about three-quarters full, and several saw no visible change. It works as a quick liquid top-up, but the reviews give you little vegetable evidence.
Pros
Cons
Best for: Pots, grow bags and a few containers where you want a quick liquid top-up, or a household that also feeds houseplants
Less suitable: Large vegetable beds, and anyone who wants a listing that names vegetables or reviews from vegetable growers
Specifications
Common questions
Can I use this liquid on vegetables?
The listing asks this question but the bullets do not answer it. The manufacturer label, which is outside the listing, says it can be used on fruits and vegetables. Check the pack for the dose.
Can I use it on houseplants?
Yes. The listing says it can be used in the garden and on indoor houseplants.
How do I dilute it?
The listing gives no dose. Reviewers mention half a cap or a quarter cap per litre. Follow the label on your bottle.
Across 1,284 amazon.co.uk ratings at 4.6 out of 5, this 1 kg bag is the only granule here whose listing gives its item type as a fruit and veg food. Reviewers report visible growth and cropping on tomatoes, cucumbers, aubergines and strawberries, and the small granules are easy to spread between plants. The smell is the recurring complaint: several reviews call it "whiffy", and it fades after a day or a watering-in. Two reviewers found blue mould where granules were left on the soil surface, so working them into the soil is the safer route. A few buyers saw slow or no change in the first weeks. At £7.99 for 1 kg it costs about £7.99 per kg, far more per kilogram than the 8 kg Growmore tubs. The "bee, pet and child friendly" wording is a claim in the listing title that we have not tested. On vegetable fit and that review base, it is the top pick in this comparison.
Pros
Cons
Best for: Small beds, raised beds and a few rows where you want a granule that names fruit and vegetables and you can work it into the soil
Less suitable: Large plots where cost per square metre matters, and anyone sensitive to smell near a patio or balcony
Specifications
Common questions
Is Miracle-Gro Performance Organics suitable for vegetables?
Yes. The amazon.co.uk listing gives the item type as a granular fruit and veg food and the target species as fruit and vegetables.
Is it safe for pets?
The listing title says bee, pet and child friendly. That is a listing claim and we have not tested it. Keep any fertiliser away from pets and call a vet if a pet eats it.
Does it smell?
Several reviewers say it smells strongly, and two report mould when granules are left on the soil surface. Reviewers say the smell fades after a day or a watering-in.
The Westland Growmore 8 kg tub costs £16.95, about £2.12 per kg, the lowest price per kilogram in this comparison. Across 465 ratings at 4.5 out of 5, reviewers praise the value, the easy spreading and the sturdy tub, and some have used it for years on lawns, hedges, flower beds and vegetable patches. The listing bullets do not name vegetables, and many reviewers fed lawns or flowers, so vegetable-specific evidence in the reviews is thin. Several reviews report tubs that split or lids that popped off in transit, with product spilled. No measuring scoop or jug is supplied. The listing gives no NPK figure and its 1:1:1 mixing-ratio field is a listing field, not a label declaration. Check the rate on your pack before you use it on vegetables. On price per kilogram it is the best-value option in this comparison.
Pros
Cons
Best for: Allotment and large-bed growers who want a cheap general feed to prepare beds and top dress
Less suitable: Small gardens that need a pack under 8 kg, and anyone who wants a listing that names vegetables or a feed aimed at fruiting crops
Specifications
Common questions
Can I use Westland Growmore on vegetables?
The listing asks this question but the bullets do not answer it. Reviewers use it on vegetable patches, flower beds, fruit trees and lawns. Check the pack for the vegetable rate.
Is it organic?
The listing does not say. n/a.
Do dogs eat it?
One reviewer says the dogs like it too. Store the tub out of reach and keep pets off treated ground until it is watered in.
Westland Boost is a 2 kg tub of slow-release granules at £11.64, about £5.82 per kg, with 181 ratings at 4.5 out of 5. The listing claims a six-month nutrient supply and high potassium for flowering and fruit production, and reviewers say one application lasted the season on baskets, boxes and annuals. Vegetables are not named in the listing, and only one reviewer used it on vegetable raised beds. Cracked or split tubs, with granules spilling into the outer packaging, appear in many reviews, and some buyers returned the order. One reviewer found it went mouldy, and several say it is too early to judge the result. The NPK of 17.8-7-15.5 comes from the manufacturer's page, not from the amazon.co.uk listing.
Pros
Cons
Best for: Fruiting crops in containers and baskets where you want one application instead of a weekly feed
Less suitable: Open vegetable beds, leafy crops that want a nitrogen-led feed, and anyone who needs the tub to arrive intact
Specifications
Common questions
Does Westland Boost help fruit production?
The listing claims high potassium levels promote flowering, fruit production and plant resilience. Vegetables are not named in the listing.
How long does one application last?
The listing claims a six-month nutrient supply. Reviewers say one application lasted the season on baskets and boxes.
Is it organic?
The listing does not say. n/a.
Topline Growmore is an 8 kg tub at £23.99, about £3.00 per kg, with 136 ratings at 4.5 out of 5. Unlike the Westland tub, the listing names vegetables, fruit trees, flowers and shrubs, and gives a 4 to 6 week feeding interval from February to October as a top or base dressing. Reviewers like the easy scattering, the waterproof tub and the value, and one saw a noticeable difference on raised beds and roses. Tubs that split or arrive with spilled granules appear in several reviews. The listing's ratio field says 20:20:20, but one reviewer says the product is 7-7-7, so check the pack label before you work out a rate. It costs about 88p more per kg than the Westland tub.
Pros
Cons
Best for: Allotment and raised-bed growers who want a Growmore-type granule whose listing names vegetables
Less suitable: Anyone who needs a confirmed analysis from the listing, and buyers who want the lowest price per kilogram
Specifications
Common questions
Is Topline Growmore suitable for vegetables?
Yes. The listing says it is ideal for most types of flowers, vegetables, fruit trees and shrubs.
How often should I apply it?
The listing says every 4 to 6 weeks from February to the end of October, as a top or base dressing. Water before and after in dry weather.
What is the NPK?
n/a. The listing's ratio field says 20:20:20 but one reviewer says it is 7-7-7. Check the label on your pack.
This 2.5 L bottle of all-purpose liquid concentrate costs £19.89, about £7.96 per litre, which is more per litre than the 2 x 800 ml pack, and has 71 ratings at 4.5 out of 5. The title and coverage field name vegetables and houseplants, and the title claims child and pet friendly. Reviewers use it on pot plants, flower beds and a vegetable garden, report fast growth and more flowers, and some have bought the brand for years. Vegetable-specific comments are rare, because most reviews are about flowers and pots. One reviewer found the full bottle unstable and gave three stars. The listing says one capful per 4 litres of water but the manufacturer's page gives a different rate, so follow the label on your bottle.
Pros
Cons
Best for: Mixed growers who feed vegetables, pots and houseplants from one bottle and are happy to follow the pack dose
Less suitable: Anyone watching cost per litre, and growers who want vegetable-specific review evidence
Specifications
Common questions
Can I use this liquid on vegetables?
Yes. The listing names vegetables in the title and gives the coverage as house plants and vegetables.
Is it child and pet friendly?
The listing title says child and pet friendly. That is a listing claim and we have not tested it. Keep the bottle out of reach.
How much do I use?
The listing says one capful per 4 litres of water, but the manufacturer's own page gives a different rate. Follow the label on your bottle.
We compared seven amazon.co.uk listings, their UK rating lines, the review comments on those listings, and manufacturer pages where a listing omits the NPK or the rate. Scores reflect vegetable fit, nutrient information, format, price per unit and documented limits such as smell and damaged tubs. They are not laboratory results, and Products Compared did not grow a trial.
Fit for vegetables
30%We check whether the listing names vegetables and gives a rate. A houseplant-led listing is a weaker fit for edible crops.
Nutrient lean
25%We record an NPK only when a manufacturer page states it. The RHS describes Growmore as nitrogen-led, and fruiting crops need potassium from flowering.
Format and speed
20%Granules suit beds, liquids suit containers and a quicker correction, and a slow-release granule is the hands-off option.
Cost per application
15%We use the shelf price, the calculated price per kilogram or litre, and a manufacturer rate where one exists.
Pets, children and packaging
10%Pet-friendly wording stays a listing claim. We also note smell and repeated reviews about cracked or split tubs.
Start with the crop and the place you grow it, then the NPK and the format. A granule that names vegetables is a different buy from a cheap general tub, and a liquid for pots is a different buy again. Shelf price, price per kilogram and the cost of one application are three separate figures.
A vegetable fertiliser is plant food sold for edible crops. In this comparison that means granules, a liquid concentrate or a soluble powder for a vegetable bed, a raised bed or a container. It is not a soil, a compost or a bark mulch, and it is not a feed made for one crop only. Most of the seven amazon.co.uk listings are all-purpose or Growmore-type products. That matches how UK buyers shop, so the page keeps them and says which listings actually name vegetables.
The RHS describes Growmore as labelled 7-7-7 and about 7-3.1-5.8 as elements, so it is nitrogen-led. Leafy crops and fruiting crops do not want the same lean.
Water before you feed, and water again when the pack says so. The Topline Growmore listing says to water before and after in dry weather.
Stop outdoor feeding in late autumn and winter. A late nitrogen feed encourages soft growth that is more open to pests and to cold.
The 2.5 litre listing says one capful per 4 litres of water. The manufacturer page gives a different rate. Follow the label on the bottle you hold.
Fit comes first: a listing that names vegetables and gives a rate is a stronger match than a houseplant-led bottle. Read the NPK on the pack. Where this comparison quotes 8-5-5, 7-3-5 or 17.8-7-15.5, that figure is from a manufacturer page, not from the amazon.co.uk listing and not from a lab. The RHS describes Growmore as nitrogen-led, about 7-3.1-5.8 as elements. Fruiting crops need more potassium from flowering. Granules suit open beds.
Compare the cost of one application, not only the shelf price. At the 70 g per square metre top-dressing rate on the Westland page, the £16.95 tub is about 15p per square metre. That is arithmetic. Performance Organics at 75 to 125 g per square metre is about 60p to £1 per square metre on the same arithmetic. A pet-friendly title is a listing claim we have not tested. Animal PoisonLine says that more than a trivial amount of general fertiliser is likely to upset a dog's stomach.
Three typical situations, each with a recommendation from this comparison.
You want a granule that names fruit and vegetables for a small bed. Performance Organics does that, with NPK 8-5-5 on the manufacturer page and 1,284 ratings at 4.6. Work the granules into the soil. Reviewers often mention a strong smell, and the pet-friendly line in the title is a claim we have not tested.
You want a low cost per square metre and can live with a nitrogen-led general granule. The 8 kg tub is £16.95, about £2.12 per kilogram. The listing bullets do not name vegetables, several reviews report split tubs, and you should use the rate on the pack.
You want a liquid top-up for pots and grow bags. This 2 x 800 ml pack is £7.98, about £4.99 per litre, with 3,025 ratings at 4.6. The listing does not name vegetables. The manufacturer label, outside the listing, says it can be used on fruits and vegetables. Follow the dose on your bottle.
Whether a listing names vegetables matters more than a low price per kilogram on its own. Miracle-Gro Performance Organics Fruit & Veg granules, 1 kg, are the top pick: the item type is a fruit and veg food, the manufacturer page gives NPK 8-5-5, and 1,284 ratings average 4.6. The smell, mould on granules left on the surface, and a unit price of about £7.99 per kilogram are the limits. Westland Growmore, 8 kg, is the best-value option at £16.95, about £2.12 per kilogram. Its bullets do not name vegetables, and several reviews report split tubs.
Westland Growmore, 8 kg
At £16.95 it is about £2.12 per kilogram, the lowest unit price here, and the listing bullets do not name vegetables.
Editorial
Products Compared publishes British-English buying guides based on amazon.co.uk listings and public UK sources. We do not run a lab and we do not invent test scores.
Guides on what to look for, how to use a product, and common mistakes.
Public UK and manufacturer sources used for this comparison; last accessed 15 October 2026.
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 article contains affiliate links. If you buy a product through one of these links, we may earn a small commission at no extra cost to you. Our editorial assessment remains independent and is based on amazon.co.uk listing data, customer-review evidence and public sources; we did not conduct a laboratory test.
