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Best Mediterranean plant food for a small UK patio

Updated: October 2026

You want one pack for a lemon, an olive, or two or three pots, and you want to know which listing to leave. Best, here, means the plant names match, the pack matches the number of pots, and you can see what the amazon.co.uk page prints. It does not mean a laboratory winner or the highest star line. The [Mediterranean plant food comparison](/hub/fertiliser-soil-and-bark-mulch/mediterranean-plant-food) is the table. This page says who each kept product is for. The listings were checked on 21 October 2026. The plants were not grown for this page. A qualifying purchase through our links can earn us a commission at no extra cost to you.

You want one pack for a lemon, an olive, or two or three pots, and you want to know which listing to leave.

Our top picks

Substral Substral Naturen citrus and Mediterranean liquid, 500 ml

Best overall

Substral Substral Naturen citrus and Mediterranean liquid, 500 ml
3.9/10about £15.88
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Algoflash Algoflash Alimed Mediterranean plant fertiliser, 750 ml

Best value

Algoflash Algoflash Alimed Mediterranean plant fertiliser, 750 ml
3.3/10about £17.79
View offer
Substral Substral Naturen long-term citrus and Mediterranean, 1.2 kg

Rank 3

Substral Substral Naturen long-term citrus and Mediterranean, 1.2 kg
4.9/10about £19.19
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On this page
  1. 1.What best can mean in this set
  2. 2.Two household liquids
  3. 3.The 1.2 kg long-term pack
  4. 4.Who should skip the 20 kg sack
  5. 5.A cheaper citrus bottle that is not in the table

What best can mean in this set

Two listings are liquids, one is a 1.2 kg long-term pack, and one is a 20 kg sack for agricultural crops. Saved review texts are marked Reviewed in Germany or Reviewed in France, or there is no review text. None is a United Kingdom review sample. The top pick is the 1.2 kg Substral Naturen pack, because the bullets name the widest set of plants and claim up to three months. The best value mark sits on the 750 ml Algoflash liquid, the lower price per 100 ml of the two liquids. Criteria before any ASIN are on the Mediterranean plant fertiliser buying guide.

Two household liquids

Substral Naturen citrus and Mediterranean liquid, 500 ml, is £15.88. The mixing-ratio field prints 1:0, which is not millilitres per litre, and the listing states no NPK. Choose it when you will read the dose on the bottle. Algoflash Alimed, 750 ml, is £17.79, about £2.37 per 100 ml. The target-species field says Plants, and there is no dilution. One French-language review says two olives died, so the star line is not a safety proof. The best value mark is the unit price only.
Substral Substral Naturen citrus and Mediterranean liquid, 500 ml

Testsieger

Substral Substral Naturen citrus and Mediterranean liquid, 500 ml
3.9/10about £15.88
View offer

The 1.2 kg long-term pack

Substral Naturen long-term, 1.2 kg, is £19.19. The bullets name lemon, orange, mandarin, oleander, hibiscus, olive and fig and claim one application for up to three months. No certifier is named beside the organic-farming line. The item-form field says Paste, and the listing gives no gram rate. This is the top pick for a small mixed group when you accept one German-language review at 3.0. Skip it when you need a weekly winter citrus liquid. Oleander stays toxic if eaten. The season is on how to feed Mediterranean plants.

Who should skip the 20 kg sack

Cultivers, 20 kg, costs £56.28. The bullets state NPK 8-1-5. Specific uses say agricultural crops, and the listing gives no grams for one pot. The field that prints 8:1:5 repeats the NPK. It is not a dilution. The star line is 5.0 from two reviews with no text. Leave the sack for one pot. Choose it when you already feed at crop scale and the bag's chart supplies the rate.

A cheaper citrus bottle that is not in the table

Growth Technology Citrus Focus, 1 litre, was £8.95 on amazon.co.uk on 21 October 2026 and prints 10 ml per litre weekly, with regular use limited to March until October. It stays out of the table because it does not answer oleander, a mixed olive group, or a winter feed from November to mid-March. Leave its 10 ml figure on its own label.

Common questions

Which of the four is for one lemon in a pot?
The 500 ml Substral names citrus and Mediterranean plants at £15.88, with the dose missing from the listing. The 1.2 kg Substral names lemon, orange and mandarin and claims up to three months, with no gram rate. Either can be the household choice if you will read the pack. Algoflash does not give you a citrus list. The 20 kg sack is the wrong size for one pot. A lemon that needs a winter formula still needs a label that states it.
When is the 20 kg sack the wrong purchase?
It is the wrong purchase for one patio pot, for a home with no storage, and for anyone who needs a gram rate on the amazon.co.uk page. The listing costs £56.28, weighs 20 kg, and says agricultural crops. The low price per 100 g assumes you will use the sack. Two five-star reviews with no text do not describe a container lemon.
Is the 1.2 kg pack a weekly winter liquid?
The item-form field says Paste, and the bullets claim one application for up to three months. That is a different pattern from a weekly winter liquid. The listing does not print a winter citrus analysis or a gram rate. If you need a balanced winter feed you can mix from November, look for a label that says so.
Can I trust 4.6 stars if the texts are from Germany or France?
The 4.6 lines are the amazon.co.uk figures, with 1,112 and 347 reviews. The saved texts are marked Reviewed in Germany or Reviewed in France. They record smell, no change, and one report of dead olives. They are not a count of UK buyers. The top pick is the pack with the fuller plant list, and that pack has one German-language review at 3.0.
Is Citrus Focus at £8.95 one of the compared products?
It is not in the four-row comparison. The price and the 10 ml per litre weekly instruction come from an amazon.co.uk fetch on 21 October 2026. The description limits regular use to March until October. Use it as context when you are buying for citrus alone. Leave its millilitres on its own label.
Does feeding oleander make the plant safe?
Feeding does not change oleander's toxicity. The RHS treats it as toxic if eaten, and smoke from burning it is harmful. The 1.2 kg bullets name it as a patio plant you may feed. That is a feeding claim. If a person or a pet has eaten the plant, contact NHS 111 or a vet.

Related pages

Citrus fertiliser for UK pots

Mediterranean plant food

Mediterranean plant fertiliser: checks before you buy

How to feed Mediterranean plants across the UK year

Lemon tree yellow leaves: check the pot before feed

Sources

Public UK sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the four amazon.co.uk listings captured on 21 October 2026. A star line is not a count of UK reviews. Organic wording is quoted from the listing, and no UK organic body is named. Oleander toxicity is the Royal Horticultural Society plant note, not a result of feeding.

  1. RHS, How to grow citrus (retrieved 21 October 2026)
  2. RHS, How to grow olives (retrieved 21 October 2026)
  3. RHS, Citrus problems (retrieved 21 October 2026)
  4. RHS, Nutrient deficiencies (retrieved 21 October 2026)
  5. RHS, How to feed plants (retrieved 21 October 2026)
  6. GOV.UK, Manufacturing and marketing fertilisers (retrieved 21 October 2026)
  7. Fertilising Products Regulations 2020 (retrieved 21 October 2026)
  8. RHS, Oleander (Nerium oleander) (retrieved 21 October 2026)