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Organic or standard tomato feed: what the label proves

Updated: October 2026

Choosing organic or standard tomato feed is not the same as choosing seaweed or no seaweed. Seaweed is an ingredient; an organic claim should name a scheme or control body you can verify. In this amazon.co.uk set, Maxicrop is the only listing with a named organic claim in its bullets, while Doff, Tomorite and Big Tom mention seaweed without that claim. Our [tomato fertiliser comparison](/hub/fertiliser-soil-and-bark-mulch/tomato-fertiliser) sets out the products and captured prices. The same Maxicrop listing names two different organic bodies. Products Compared did not run a laboratory test. A qualifying purchase can earn us a commission at no extra cost to you.

Choosing organic or standard tomato feed is not the same as choosing seaweed or no seaweed. Seaweed is an ingredient; an organic claim should name a scheme or control body you can verify.

Our top picks

Maxicrop Maxicrop Organic Tomato Feed 1 L

Best overall

Maxicrop Maxicrop Organic Tomato Feed 1 L
8.6/10about £11.99
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Doff Doff Tomato Feed 1 L

Rank 2

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

Preis-Tipp

Doff Doff Tomato Feed 2.5 L
8.8/10about £12.18
View offer
On this page
  1. 1.What an organic claim has to name
  2. 2.What the Maxicrop listing actually prints
  3. 3.Seaweed in a standard feed
  4. 4.When the dearer bottle is the right one

What an organic claim has to name

Organic production in the UK is controlled through approved certification bodies. GOV.UK lists Organic Farmers & Growers as GB-ORG-02 in Great Britain and Soil Association Certification as GB-ORG-05. Northern Ireland uses corresponding XI codes. Both are legitimate, and they are separate organisations. A brand may describe seaweed or plant extracts without a certified organic-input claim. Look for the named body and wording that applies to the exact product. An input certificate is not the same as saying the tomatoes themselves are certified organic produce. Our tomato fertiliser buying guide uses the same check for NPK and dilution fields.

What the Maxicrop listing actually prints

The Maxicrop Organic Tomato Feed 1 L bullets say approved and certified for organic growing by OF&G. That is the most specific organic line in this twelve-product set. It is captured at £11.99, names seaweed, and lists tomatoes, peppers, chillies and aubergines. Coverage says up to 200 litres. Another line on the same listing names Soil Association. Those bodies are not mutual confirmation, and no certificate number appears in the extract. Treat OF&G as the bullet claim and verify the pack. A 4:2:6 entry in the mixing-ratio field resembles an analysis, not a cap dose. Do not mix four parts feed with two parts water.
Maxicrop Maxicrop Organic Tomato Feed 1 L

Testsieger

Maxicrop Maxicrop Organic Tomato Feed 1 L
8.6/10about £11.99
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Seaweed in a standard feed

Tomorite, Doff and Big Tom can name seaweed, and Big Tom also names magnesium, iron and trace elements. Seaweed in a conventional feed does not separate organic from standard. Tomorite states NPK 4-3-8. Big Tom's model field states NPK 6-3-9.5. Doff's one-litre bullets state 4-5-9 and 300 litres from one litre, although Doff's website gives a different NPK. At £5.30 that claimed coverage is roughly 1.8p per made-up litre. Maxicrop at £11.99 for up to 200 litres is roughly 6p. The dearer figure can still be reasonable if the verified claim is what you need. See how to use tomato fertiliser once you have chosen a bottle.

When the dearer bottle is the right one

Choose Maxicrop when you will verify a named control body on the pack. Choose a standard concentrate when you want the lower stated made-up cost or a familiar NPK. Doff's one-litre concentrate is the value-led option in this dataset. The best tomato feed UK shortlist matches each bottle to a use. Do not buy an organic feed to treat blossom end rot. Fluctuating moisture, not a missing logo, is the usual reason calcium fails to reach the fruit. A legible label beats vague natural language.

Common questions

Is Maxicrop the only organic claim in this comparison?
Yes, its Amazon bullets are the only captured listing text that names an organic body, OF&G. Other products mention seaweed but do not show a named organic scheme in their comparison fields.
Does OF&G mean Soil Association?
No. GOV.UK lists them as separate approved control bodies: OF&G is GB-ORG-02 and Soil Association Certification is GB-ORG-05 in Great Britain. Check which mark is on the current pack.
Why does the listing name both bodies?
The bullets name OF&G while another line names Soil Association, probably reflecting inconsistent marketplace content. The extract does not prove which statement is current. Verify the delivered label and, if necessary, ask the manufacturer.
Is seaweed tomato feed organic?
Not automatically. Seaweed is an ingredient used in both organic-claim and standard feeds. Look for a named control body or scheme rather than inferring certification from seaweed.
What does Maxicrop cost per made-up litre?
Using the captured price of £11.99 and the listing's up to 200 litres coverage, it is about 6p per made-up litre. That is provisional because actual use must follow the current pack dose.
Do I need organic feed to prevent blossom end rot?
No. Organic status does not prevent blossom end rot. Steady watering is the priority because fluctuating moisture can disrupt calcium transport to developing fruit. Use either feed type only at its printed rate.

Related pages

Tomato fertiliser and blossom end rot

Tomato fertiliser

Best tomato feed UK: the right bottle for your plants

Tomato fertiliser buying guide: checks before you pay

How to use tomato fertiliser without doubling the dose

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)