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Compo potting compost for houseplants

Updated: October 2026

You are potting a monstera, a palm, or two foliage plants on a windowsill, and the Compo photos look the same. Compo potting compost for houseplants, in this set, is one 5 litre bag that names green plants and palms, plus universal bags whose listings ask about indoor use and do not answer. This page stays indoors. Litres and prices are on the [Compo potting compost comparison](/hub/fertiliser-soil-and-bark-mulch/compo-potting-compost). Peter F. used listings saved on 19 October 2026. This is not a lab trial of your plant. A qualifying purchase through the comparison can earn us a commission at no extra cost to you.

You are potting a monstera, a palm, or two foliage plants on a windowsill, and the Compo photos look the same.

Our top picks

Compo Compo Sana Confort universal 12 L

Best overall

Compo Compo Sana Confort universal 12 L
5.4/10about £16.92
View offer
Compo Compo Sana potting soil 5 L

Rank 2

Compo Compo Sana potting soil 5 L
7.7/10about £20.29
View offer
Compo Compo Sana green plants and palms 5 L

Alternative

Compo Compo Sana green plants and palms 5 L
5.8/10about £20.59
View offer
On this page
  1. 1.The bag with foliage in the title
  2. 2.Indoor use is a question, not a promise
  3. 3.Five litres in a flat
  4. 4.What to skip indoors

The bag with foliage in the title

The bag that says what you are doing is the 5 litre Compo Sana for green plants and palms, at £20.59, about £4.12 a litre. The bullets say 8 weeks of nutrition, decorative leaves, and a lot of water. Only three of the 50 saved reviews are from the United Kingdom, and they mention chives on a balcony, not a palm. COMPO's international page names indoor foliage and responsibly produced peat. The amazon.co.uk bullets do not say peat. Do not treat the UK listing as a peat-free palm compost. Who should skip a bag is on best Compo potting compost.

Indoor use is a question, not a promise

On the ordinary 5 litre Sana, at £20.29 with up to 6 weeks on the bullets, the listing asks whether you can use it indoors and does not answer. UK reviews in that saved listing do include indoor repotting, and one UK reviewer reported mould and poor drainage. That is British buyer experience, not a printed guarantee. The 12 litre Confort asks about indoor plants and does not answer. A universal bag can be the general pot for a tough foliage plant. It is not a specialist recipe.
Compo Compo Sana Confort universal 12 L

Testsieger

Compo Compo Sana Confort universal 12 L
5.4/10about £16.92
View offer

Five litres in a flat

Five litres is one modest pot, or two small ones, not a 30 cm pot. A rule of thumb puts a 20 cm pot about 16 cm deep near 5 litres. One UK reviewer of the universal 5 litre Sana used two bags for a 30 cm pot. You are paying for the palm title and the 8-week bullet, not for a larger sack. An open 12 litre bag is a storage problem even when the price per litre on the buying guide looks kinder. The hole and the gnats are on how to use Compo potting compost.

What to skip indoors

A Belgium review in English says the foliage mix was fine for monsteras and less so for snake plants. That is one comment from Belgium, not a UK trial. Snake plants rot if they sit wet. Orchids want bark, not a fine mix that stays wet. A blueberry in a pot wants ericaceous compost. Fine seed is a no. The 7.5 litre peat-free bag is the indoor option only when the peat word is the point. German reviews mention herbs. That is not a UK indoor trial of a monstera.

Common questions

Can I use the ordinary 5 litre Sana indoors?
You can, with the limit that the listing asks about indoor plants and does not answer. UK reviews in the raw sample do describe indoor repotting. The bullets say up to 6 weeks, not the 8 weeks on the palm bag, and they do not say peat-free. One UK reviewer reported mould where drainage was poor. Use a pot with a hole, and do not treat the bag as an orchid or cactus mix.
Do I need the palm bag for a monstera?
The green-plants-and-palms title is the closer match, at 5 litres and 8 weeks, because it names decorative leaves. A single Belgium comment said it suited monsteras. That is not a UK test, and the UK sample on that bag is three reviews, about chives and a small sack. The universal 5 litre Sana is the fallback when you accept a general pot and a listing that never confirms indoor use.
Are snake plants the same as palms here?
No. The foliage bullet talks about a lot of water. Snake plants rot if they sit wet. One non-UK review found the mix less suitable for them than for monsteras. If yours needs a gritty, fast-draining mix, this is the wrong default. A palm or a fern is closer to the title.
Will 5 litres fill more than one pot?
It fills one pot around 20 cm across and about 16 cm deep, as a rule of thumb, or two smaller pots. It does not fill a 30 cm pot. A UK reviewer used two 5 litre Sana bags for that size. The foliage bag is the same 5 litres. For a row of plants, the 10 litre and 12 litre bags are on the comparison, with their review-country limits.
Does the listing say the palm bag is peat-free?
No. The UK bullets do not mention peat. COMPO's international page for this mix describes responsibly produced peat. That is not a peat-free claim, and it is not the 7.5 litre title that does say peat-free. If you need those words on the sack you order, order that title and still read the bag.
The listing asks about indoor plants and never answers. What does that mean?
It means the page raised the question and the bullets did not settle it. You do not have a yes from the listing. You have UK review comments on the 5 litre Sana that include indoor use, and RHS guidance that any indoor pot needs a drainage hole and a compost that matches the plant. An unanswered question is not a hidden promise.

Related pages

Compo potting compost comparison

How to use Compo potting compost

Best Compo potting compost

Compo potting compost buying guide

Compo peat-free compost and what the UK rules actually say

Sources

Public UK and maker sources from the research digest, used for this page in October 2026. Prices, stars and review counts are from the five amazon.co.uk listings captured on 19 October 2026. A UK peat ban is not in force. German and Spanish review samples are not British customer experience. Bio on the 7.5 litre title is not a Soil Association number in the saved listing.

  1. Defra, sale of horticultural peat to be banned (retrieved 19 October 2026)
  2. RHS, retail peat-free from 2026 (retrieved 19 October 2026)
  3. Baroness Hayman letter, 29 January 2026 (retrieved 19 October 2026)
  4. Horticultural Peat (Prohibition of Sale) Bill (retrieved 19 October 2026)
  5. RHS, fungus gnats (retrieved 19 October 2026)
  6. RHS, growing plants in containers (retrieved 19 October 2026)
  7. COMPO SANA universal potting soil (retrieved 19 October 2026)
  8. COMPO BIO universal potting soil (retrieved 19 October 2026)