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Best tomato feed UK: the right bottle for your plants

Updated: October 2026

If you have a greenhouse full of fruiting plants, the best tomato feed UK option is unlikely to be the same bottle you would choose for three pots beside the back door. Concentrate stretches through a long season; ready-mixed feed removes the measuring but disappears quickly. Our [tomato fertiliser comparison](/hub/fertiliser-soil-and-bark-mulch/tomato-fertiliser) covers all twelve amazon.co.uk listings. Products Compared narrows them here by job, using captured UK prices and stated analyses, not a laboratory test. The bottle label takes priority over a marketplace field. A qualifying purchase can earn us a commission at no extra cost to you.

If you have a greenhouse full of fruiting plants, the best tomato feed UK option is unlikely to be the same bottle you would choose for three pots beside the back door.

Our top picks

Doff Doff Tomato Feed 1 L

Best overall

Doff Doff Tomato Feed 1 L
9.2/10about £5.30
View offer
Doff Doff Tomato Feed 2.5 L

Preis-Tipp

Doff Doff Tomato Feed 2.5 L
8.8/10about £12.18
View offer
Doff Doff Tomato Pour and Feed 3 L

Alternative

Doff Doff Tomato Pour and Feed 3 L
7.8/10about £6.53
View offer
On this page
  1. 1.A concentrate for a long season
  2. 2.The familiar one-litre choice
  3. 3.Ready mixed for a few plants
  4. 4.Organic, or feed bundled with a spray

A concentrate for a long season

Doff Tomato Feed 1 L is our top pick for several grow bags or a greenhouse. Its amazon.co.uk bullets state NPK 4-5-9, seaweed and magnesium, and say that one litre makes 300 litres. At the captured price of £5.30, that is roughly 1.8p per made-up litre. Doff's current product page gives a different NPK, 4-2-10, so use the analysis and dose printed on the bottle you receive. The 4.5-star line from 1,156 reviews also appears against the 500 ml and 2.5 litre Doff listings, with the same review text. It is one shared review block, not three independent product tests. The 2.5 litre Doff pack is the best-value choice by stated coverage for very heavy use. It costs £12.18 and claims up to 750 litres, around 1.6p per made-up litre. Its separate 466:1 field does not neatly match that coverage, and its extract gives no NPK. PowerGrow 4 L is £12.12, with 4.6 stars from 725 reviews, but the Amazon extract prints neither NPK nor dilution. Use the checks in our tomato fertiliser buying guide if bottle litres and made-up litres are starting to blur.

The familiar one-litre choice

Levington Tomorite 1 L is the familiar-brand alternative. Its model field states NPK 4-3-8, and Levington's guidance gives 20 ml in 4.5 litres, although that dose is missing from the captured Amazon extract. At £7.45 it costs less than the 500 ml bottle at £7.69. Westland Big Tom 1 L costs £6 and states NPK 6-3-9.5 plus trace elements, with seaweed, magnesium and iron named. Its 4.4-star line comes from only 57 reviews, and no numeric dilution is captured. If you choose either, use the how to use tomato fertiliser guide for timing, then follow the delivered label.
Doff Doff Tomato Feed 1 L

Testsieger

Doff Doff Tomato Feed 1 L
9.2/10about £5.30
View offer

Ready mixed for a few plants

Doff Tomato Pour and Feed 3 L is already diluted, so you pour it around the base. The Amazon extract says 2.5 caps every 4–7 days; Doff's own page describes 100 ml after watering. Read the bottle rather than combining the two pages. You receive three litres of finished mix, not three litres of concentrate, and reviewers say it runs out quickly. At £6.53 it can work for two or three pots. It is poor season-long value for a greenhouse.

Organic, or feed bundled with a spray

Maxicrop Organic Tomato Feed 1 L is the option if you want a named organic scheme. Its Amazon bullets say OF&G, and coverage says up to 200 litres. At £11.99 that is about 6p per made-up litre at the stated maximum. Another line names Soil Association. Those are separate control bodies, so check the mark on the pack. Our organic or standard tomato feed comparison explains that distinction. The £20.99 Topline parcel is two 1.2 litre feed bottles plus an 800 ml bug spray. The feed extract prints no NPK or dilution, and the spray has no MAPP number. Buy it only if you need both products and can verify the spray label.

Common questions

Which tomato feed is best for a greenhouse?
Doff Tomato Feed 1 L is the strongest all-round listing for a greenhouse because it combines a £5.30 price, stated NPK 4-5-9 and claimed 300-litre coverage. The 2.5 litre pack may cost less per made-up litre for heavy use, but its dilution fields conflict. Always use the delivered label.
Which feed is easiest for three pots?
Doff Pour and Feed is already mixed and suits a few patio plants when convenience matters more than cost per litre. Its three-litre bottle can run out quickly, so it is not a sensible greenhouse supply.
Is the Tomorite 500 ml bottle good value?
Not against these captured prices. The 500 ml listing is £7.69 while the 1 litre Tomorite is £7.45. The smaller bottle only wins if storage or handling makes its size worth the premium.
Is PowerGrow 4 L the cheapest concentrate?
It is inexpensive per litre in the bottle, but the Amazon extract gives no dilution rate. Without made-up coverage, you cannot fairly compare its cost per feed with Doff's stated 300 or 750 litres.
Who should buy Maxicrop?
Choose Maxicrop when a named organic claim is part of your decision and you are prepared to check the actual control-body mark. Do not pay the premium merely because it contains seaweed; several standard feeds also name seaweed.
Does the highest star average identify the best feed?
No. Topline has the highest displayed average, but it bundles feed with a spray and lacks key feed specifications. Star averages do not replace format, NPK, dilution, coverage or suitability for your number of plants.

Related pages

Tomato feed or tomato compost

Tomato fertiliser

Tomato blossom end rot: fertiliser is not the first fix

Tomato fertiliser buying guide: checks before you pay

How to use tomato fertiliser without doubling the dose

Organic or standard tomato feed: what the label proves

Sources

Public UK and manufacturer sources used for this comparison; last accessed 15 October 2026.

  1. RHS: Tomatoes, grow your own (retrieved 15 October 2026)
  2. RHS: Blossom end rot (retrieved 15 October 2026)
  3. RHS: Storing and disposing of garden chemicals safely (retrieved 15 October 2026)
  4. GOV.UK: Manufacturing and marketing fertilisers (retrieved 15 October 2026)
  5. GOV.UK: Product regulations and UKCA and CE marking (retrieved 15 October 2026)
  6. HSE: Using pesticides in the garden and home (retrieved 15 October 2026)
  7. Levington Tomorite concentrated tomato food (retrieved 15 October 2026)
  8. Doff tomato feed concentrate (retrieved 15 October 2026)