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Peat-Free Tomato Compost

Updated: October 2026

You want peat-free tomato compost, but several sacks use organic, natural or peat-reduction language instead. Those phrases do not answer the question, and peat compost is still legal to sell in the UK. Buy on an explicit peat-free statement, then adjust how you check water because the surface of a peat-free mix can mislead you. Our [tomato soil comparison](/hub/fertiliser-soil-and-bark-mulch/tomato-soil) shows which amazon.co.uk listings we compared use the words. This guide explains the legal position, what counts on a label and how to manage the compost once it is in your pot. A qualifying purchase can earn us a commission at no extra cost to you.

You want peat-free tomato compost, but several sacks use organic, natural or peat-reduction language instead. Those phrases do not answer the question, and peat compost is still legal to sell in the UK.

Our top picks

UK GROW UK GROW tomato compost 10 litres

Best overall

UK GROW UK GROW tomato compost 10 litres
9.6/10about £11.99
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Munnie Munnie multi-purpose compost 60 litres

Preis-Tipp

Munnie Munnie multi-purpose compost 60 litres
9.2/10about £9.34
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Miracle-Gro Miracle-Gro peat-free compost 20 litres

Alternative

Miracle-Gro Miracle-Gro peat-free compost 20 litres
9.0/10about £7.95
View offer
On this page
  1. 1.Is peat banned?
  2. 2.What the label must say
  3. 3.How peat-free mix behaves
  4. 4.Marks you will not see on every sack

Is peat banned?

No UK-wide retail ban on horticultural peat is in force. The UK Government announced in August 2022 that it intended to ban retail sales in England by 2024, but the deadline passed without legislation. The Peat-Free Partnership reported the same position across all four UK nations in January 2025, and the RHS agrees. A pledge or a private member's bill is not an Act. Retailers may withdraw peat and manufacturers may reformulate, but that does not make every bag peat-free. Peat-based compost can still be sold legally. The buying evidence is the sack, not the calendar.

What the label must say

Require the exact phrase peat-free when that is your condition. Organic materials can coexist with peat. Reduced peat means some peat may remain. Sustainable, eco or a green package does not state the composition. A product review is not a manufacturer specification. In this comparison, Miracle-Gro 20 litres and the 2you 30 litre grow bag explicitly say peat-free. Miracle-Gro claims feed for up to three months. 2you claims up to six weeks and names coir, wood fibre and plant fibre. Peat-free status is not stated for UK GROW's 2, 5 and 10 litre tomato composts, Munnie, either Laeto size, TerraGrade or DIVCHI. Munnie talks about reducing peat use, which is not the same claim. A Laeto review uses peat-free, but the captured title does not. Report that as not stated. John Innes names loam-based recipes, not an automatically peat-free standard. Traditional recipes used peat. Check the exact sack, then use the tomato compost buying guide for volume and feed.
UK GROW UK GROW tomato compost 10 litres

Testsieger

UK GROW UK GROW tomato compost 10 litres
9.6/10about £11.99
View offer

How peat-free mix behaves

Peat-free composts use materials such as coir, wood fibre, bark or green compost. Different blends hold water differently, so one bag does not set a universal schedule. A fibrous surface can look dry while the layer below remains moist. Check with a finger below the surface or lift a manageable pot. The RHS says to adapt watering rather than assume peat-free compost behaves like peat. Which? tested watering for tomatoes in coir-based peat-free compost over six weeks. Daily watering washed feed out and produced the worst result among its trial methods. Our how-to guide covers watering, drainage and feeding as one sequence.

Marks you will not see on every sack

The Responsible Sourcing Scheme grades ingredients from A to E across seven criteria, with A the most responsible. An RSS mark adds sourcing information. It does not replace the words peat-free, and you should not infer a grade when the mark is absent. PAS 100 is a specification for composted materials. It does not by itself make a retail growing medium peat-free. Neither an RSS grade nor PAS 100 was captured on the listings we compared. Record that as unavailable, not as a failed audit. Levington Tomorite, a planter outside this comparison, states peat-free composition and showed Organic Farmers & Growers wording on its amazon.co.uk listing. Check the current pack. For a conditioned product choice, see the best tomato grow bag guide.

Common questions

Is peat compost banned in the UK?
No. The proposed 2024 retail deadline did not become legislation, and peat extraction and sale remain legal. Retailers can withdraw products voluntarily, but that does not create a statutory ban. Check current official guidance rather than relying on the original announcement.
Must tomato compost be peat-free?
It is not a legal requirement. You can choose peat-free compost for environmental reasons and the RHS recommends peat-free options for container tomatoes. Because peat products remain legal, require the exact wording on the bag instead of assuming all new compost is peat-free.
Does organic mean peat-free?
No. Peat is organic material in the scientific sense, so an organic-materials claim does not exclude it. Natural, eco and reduced peat also fail the test. Look for the explicit words peat-free on the current product.
Why can peat-free compost look dry?
Fibres at the surface may dry before the root zone, while some blends drain quickly. Push a finger about 3 cm into the compost or judge a pot by weight. Water according to moisture, weather and the plant, not surface colour alone.
Should I water peat-free tomatoes every day?
Check them every day in hot weather, but do not water automatically. Which? found daily watering washed nutrients from coir compost in its six-week tomato trial. Apply water when the root zone needs it and follow the bag's drainage design.
What does an RSS A–E mark mean?
The Responsible Sourcing Scheme grades growing-media ingredients across seven sourcing criteria, from A to E. It adds supply-chain information but does not replace a peat-free statement. No RSS grade was captured for the listings we compared, so their grade is unavailable.
Is John Innes compost peat-free?
Not automatically. John Innes describes loam-based formulations, and the name is not a legally binding peat-free guarantee. Traditional recipes included peat, while some current bags are reformulated. Read the exact product label before buying.

Related pages

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Tomato Compost Buying Guide: Litres, Then the Label

Tomato Grow Bag vs Pot: Volume, Watering and Depth

How to Plant Tomatoes in a Grow Bag: Drainage First

Sources

Public UK sources used for this comparison; listings checked on amazon.co.uk. Last accessed 15 October 2026.

  1. RHS: How to grow tomatoes (retrieved 15 October 2026)
  2. RHS: Peat-free compost (retrieved 15 October 2026)
  3. RHS: Tomato blight (retrieved 15 October 2026)
  4. RHS: John Innes compost (retrieved 15 October 2026)
  5. RHS: Minimising health risks in the garden (retrieved 15 October 2026)
  6. Which?: How to grow tomatoes (retrieved 15 October 2026)
  7. Gardeners' World: tomatoes in a growing bag (retrieved 15 October 2026)
  8. Peat-Free Partnership: legislation timeline (retrieved 15 October 2026)