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Best rose compost among these five amazon.co.uk bags

Updated: October 2026

Best rose compost, on a Saturday search, usually means a garden-centre shortlist with brands this page does not stock. This page is a short cut of five amazon.co.uk listings only: Miracle-Gro's twin 40 litre pack, Carbeth 65 litres, Melcourt Sylvagrow 40 litres, and Indigo's 46 litre and 10 litre mixes. Best here means best fit among those five, not a UK lab winner. Prices and stars come from the [roses compost comparison](/hub/fertiliser-soil-and-bark-mulch/roses-compost). We did not pot a rose. A qualifying purchase through a link can earn a commission at no extra cost to you.

Best rose compost, on a Saturday search, usually means a garden-centre shortlist with brands this page does not stock.

Our top picks

Miracle-Gro Miracle-Gro peat-free rose, tree and shrub 2 × 40 L

Best overall

Miracle-Gro Miracle-Gro peat-free rose, tree and shrub 2 × 40 L
8.4/10about £25.46
View offer
Carbeth Plants Carbeth rose, tree and shrub compost 65 L

Best value

Carbeth Plants Carbeth rose, tree and shrub compost 65 L
7.6/10about £18.99
View offer
Sylvagrow Melcourt Sylvagrow rose, tree and shrub 40 L

Alternative

Sylvagrow Melcourt Sylvagrow rose, tree and shrub 40 L
6.6/10about £17.99
View offer
On this page
  1. 1.What best means on this page
  2. 2.Top pick and best value
  3. 3.Patio 10 L, the RHS 40 L, and the quiet Indigo lines
  4. 4.Who should leave these bags

What best means on this page

These five bags print a rose, tree and shrub job or a specialist rose planting mix. Levington and RocketGro are not rows here. How to choose the job sits on the rose compost buying guide. Scores are editorial marks for sorting, not a compost test: Miracle-Gro 76, Carbeth 68, Sylvagrow 58, Indigo 46 litre 54, Indigo 10 litre 50. Bag-damage reviews keep Miracle-Gro off a round 80. The top pick badge is on Miracle-Gro. The best value badge is on Carbeth. In sentences those mean top pick and best value, not a test win.

Top pick and best value

The top pick is Miracle-Gro peat-free rose, tree and shrub, two 40 litre bags at about £25.46, listed as 80 litres and 26.6 kg. Across 523 reviews the star line is 4.6. The listing prints peat-free and a feed of up to 3 months. Skip it for one patio pot, if you cannot move 26.6 kg, or if container use must be in the bullets. Reviewers report holed or half-empty bags, and one called the contents peat despite the title. The best value is Carbeth 65 litres at about £18.99, about 29p a litre, with a 9-month feed and a bullet that names pots, borders and containers. The star line is 4.5 from 54. Skip it if you need Miracle-Gro's review depth, or if one hydrophobic-dust review outweighs the moisture-retaining bullet. A unit count of 650 g sits against the 65 litre title. Treat the litre line as the volume.
Miracle-Gro Miracle-Gro peat-free rose, tree and shrub 2 × 40 L

Testsieger

Miracle-Gro Miracle-Gro peat-free rose, tree and shrub 2 × 40 L
8.4/10about £25.46
View offer

Patio 10 L, the RHS 40 L, and the quiet Indigo lines

Indigo 10 litres is the patio-sized bag at about £11.99, about 120p a litre. It prints peat-free, a 6-month feed, and sulphur and zinc, and the bullets name pots. The star line is 4.6 from 3 reviews with no text. Buy it for one pot. Skip it when Carbeth or the Miracle-Gro twin pack will fill several containers. Patio depth is on compost for roses in pots. Indigo 46 litres is about £15.89, about 35p a litre, with the same 6-month feed and a containers bullet. The star line is 5.0 from 1 review and no text. Use it for one shrub or a small border if the parcel matches the title. Sylvagrow 40 litres at about £17.99 is about 45p a litre, 100% peat-free, and RHS endorsed on this bag size. Blend 1 part to 3 or 4 parts soil. The star line is 3.9 from 7, including one fungus-gnat report in a sealed bag. Buy it to improve a planting hole. Skip it for a patio pot filled neat.

Who should leave these bags

Leave if the rose stays in a pot and you want peat-free John Innes No. 3, 23–35 cm deep. Leave if you already have a cheap 50–60 litre multi-purpose sack and a bed to plant. Manure plus a blend can do that job. Leave if you needed ericaceous compost. Roses are not lime-haters by default. Leave if you are replacing a dead rose in the same hole. A 40 litre bag does not cure replant disease. Swap soil 45 cm deep and wide, then plant. Levington and RocketGro stay off this table.

Common questions

What is the best rose compost in this comparison?
Best fit among these five is Miracle-Gro's twin 40 litre pack if you can store 80 litres and accept holed-bag reports. It has 4.6 from 523 reviews and a printed 3-month feed. It is not a lab top pick for the whole UK aisle.
Which bag is best value per litre?
Carbeth 65 litres at about £18.99, about 29p a litre, with a 9-month feed and a 4.5 from 54. Pence per litre is not a quality claim.
Which bag is best for one patio rose?
Indigo 10 litres, because it states pots and is a 10 litre carry. Carbeth also names pots if you have a half-barrel. Sylvagrow is planting-out, not a neat pot fill.
Which bag has enough reviews to trust the stars?
Miracle-Gro, with 523 reviews and 50 texts. Carbeth has 54 reviews and 22 texts. The Indigo listings have almost no review text. Sylvagrow has seven reviews and two texts.
Is the RHS-endorsed bag the top pick?
No. Sylvagrow carries an RHS endorsement on the 40 litre bag and scores 58 because the review sample is thin. The top pick badge follows the highest editorial score, which is Miracle-Gro.
Who should skip the Miracle-Gro twin pack?
Anyone who needs one small pot, cannot lift 26.6 kg, or wanted a listing that answers container use in the bullets. Damaged-bag reviews are common in the first 50 texts.
Can I add Levington or RocketGro to this table?
Not on this page. They are other amazon.co.uk or garden-centre bags and would be a different comparison if they entered these listings.

Related pages

How to plant roses with compost

Roses compost

Rose compost buying guide: job, peat, feed, litres

Compost for roses in pots: depth, mix and which bag

Rose compost vs multi-purpose for beds and patio pots

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 stored amazon.co.uk listings. A peat-free line and a feed window are listing claims. The Sylvagrow blend ratio is the maker's planting instruction. An RHS endorsement on one 40 litre bag is not a controlled compost test. No Act ending amateur peat sales in England was in force in October 2026.

  1. RHS, planting roses (retrieved 23 October 2026)
  2. RHS, roses in containers (retrieved 23 October 2026)
  3. RHS, replant disease (retrieved 23 October 2026)
  4. RHS, minimising health risks in the garden (retrieved 23 October 2026)
  5. Defra, horticultural peat announcement, 27 August 2022 (retrieved 23 October 2026)
  6. Melcourt SylvaGrow rose, tree and shrub planting compost (retrieved 23 October 2026)
  7. Public Health Scotland, gardening safely, October 2024 (retrieved 23 October 2026)
  8. B&Q, compost buying guide (retrieved 23 October 2026)