Roundups7. Garden care

7. Garden care

Best peat-free potting mixes for houseplants compared in 2026

Peat-free potting mixes vary more than the bags suggest, from general houseplant blends to a dedicated cacti and succulent mix. This roundup compares five options by volume, material, intended plants, added ingredients and price, so you can match the right bag to your collection and your budget.

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Growth Technology Houseplant Focus Repotting Mix 8L

Our Top Pick

Best all-rounder

Growth Technology's 8L repotting mix gives a free-draining coir and perlite blend with nutrients claimed for up to 2 months at £8.90, a mid-sized bag between the 3L and 10L options.

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Peat-free potting mixes at a glance

Product	Brand	Price	Retailer	Volume	Material/blend	Intended plant focus	Added ingredients	Price
Growth Technology Houseplant Focus Repotting Mix 3L	Growth Technology	£7.25Checked 6 Nov 2026, 17:00 UTC	Amazon UK	3L	Peat-free, free-draining indoor plant mix	Houseplants	Nutrients for up to 2 months (product details claim)	£7.25
Westland Cacti & Succulent Potting Mix 4L	Westland	£6.5Checked 6 Nov 2026, 17:00 UTC	Amazon UK	4L	Peat-free	Cacti and succulents (specialist mix)	Seramis granules and sand	£6.50
Soil.Ninja House Plant Potting Soil 10L	Soil.Ninja	£15.99Checked 6 Nov 2026, 17:00 UTC	Amazon UK	10L	Peat-free; coco coir	Wide range of indoor plants	Perlite and worm castings	£15.99
Miracle-Gro Premium Peat-Free Houseplant Potting Mix 10L	Miracle-Gro	£6.96Checked 6 Nov 2026, 17:00 UTC	Amazon UK	10L	Peat-free	Houseplants	—	£6.96
Growth Technology Houseplant Focus Repotting Mix 8L	Growth Technology	£8.9Checked 6 Nov 2026, 17:00 UTC	Amazon UK	8L	Peat-free, soil-based compost with coir and perlite, free-draining	Broad indoor houseplant use	Nutrients for up to 2 months (product details claim)	£8.90

Please check the Amazon page for the current price.

Peat-free potting mixes compared

Best for small repotting jobs

Growth Technology Houseplant Focus Repotting Mix 3L

A peat-free, free-draining 3L indoor plant mix with nutrients for up to 2 months claimed in the product details.

Growth Technology's 3L repotting mix is a peat-free, free-draining blend made for indoor plants. The product details claim it provides nutrients for up to 2 months, and it suits broad houseplant use. At £7.25 it is the smallest bag here, a sensible size for a few pots, though the 8L Growth Technology bag offers more mix for £1.65 extra.

Price£7.25Checked 6 Nov 2026, 17:00 UTC

Key Details

Volume: 3L
Material/blend: Peat-free, free-draining indoor plant mix
Intended plant focus: Houseplants
Added ingredients: Nutrients for up to 2 months (product details claim)
Price: £7.25

What We Like

Free-draining peat-free blend for houseplants
Nutrients for up to 2 months claimed in the product details

Considerations

Smallest bag here at 3L for £7.25
Costs £1.65 less than the 8L Growth Technology bag but holds under half as much

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Best for cacti and succulents

Westland Cacti & Succulent Potting Mix 4L

A peat-free 4L specialist mix with added Seramis granules and sand, made for cacti and succulents rather than general houseplants.

Unlike the general houseplant mixes here, this Westland blend is a specialist mix for cacti and succulents. It is peat-free and has Seramis granules and sand added, and it is positioned for water management, airflow and drainage. At £6.50 for 4L, it is a focused pick if your collection is mostly desert plants.

Price£6.5Checked 6 Nov 2026, 17:00 UTC

Key Details

Volume: 4L
Material/blend: Peat-free
Intended plant focus: Cacti and succulents (specialist mix)
Added ingredients: Seramis granules and sand
Price: £6.50

What We Like

Specialist cacti and succulent blend
Seramis granules and sand added for drainage and airflow

Considerations

Specialist formulation, so a general houseplant mix suits leafy plants better

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Best for customising

Soil.Ninja House Plant Potting Soil 10L

A peat-free 10L blend of coco coir, perlite and worm castings that can be used as it is or customised.

Soil.Ninja's 10L bag is peat-free and built around coco coir, perlite and worm castings. It is described for a wide range of indoor plants and can be used ready to go or customised with your own additions. At £15.99, it is the priciest bag here, giving plenty of mix for bigger repotting sessions.

Price£15.99Checked 6 Nov 2026, 17:00 UTC

Key Details

Volume: 10L
Material/blend: Peat-free; coco coir
Intended plant focus: Wide range of indoor plants
Added ingredients: Perlite and worm castings
Price: £15.99

What We Like

Coco coir, perlite and worm castings in one blend
Ready to use or easy to customise

Considerations

Highest price here at £15.99, over double the Miracle-Gro 10L bag

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Best large bag for the money

Miracle-Gro Premium Peat-Free Houseplant Potting Mix 10L

A peat-free 10L houseplant mix from Miracle-Gro at £6.96, the lowest price per litre here.

Miracle-Gro's premium peat-free houseplant mix comes in a generous 10L bag for £6.96, which works out the cheapest per litre in this roundup. It is made specifically for houseplants and suits anyone with a lot of pots to fill or repot, as one large bag goes a long way across a whole collection.

Price£6.96Checked 6 Nov 2026, 17:00 UTC

Key Details

Volume: 10L
Material/blend: Peat-free
Intended plant focus: Houseplants
Price: £6.96

What We Like

Lowest price per litre here at £6.96 for 10L
Large bag for repotting many plants

Considerations

A 10L bag takes more storage space than the 3L, 4L and 8L packs

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Best all-rounder

Growth Technology Houseplant Focus Repotting Mix 8L

A peat-free, soil-based 8L compost using coir and perlite, free-draining and claimed to provide nutrients for up to 2 months.

Growth Technology's 8L repotting mix is a peat-free, soil-based compost that uses coir and perlite for free drainage. The product details claim nutrients for up to 2 months, and it suits broad indoor houseplant use. At £8.90 it sits between the 3L Growth Technology bag and the 10L bags, giving more mix than the 3L option for £1.65 extra.

Price£8.9Checked 6 Nov 2026, 17:00 UTC

Key Details

Volume: 8L
Material/blend: Peat-free, soil-based compost with coir and perlite, free-draining
Intended plant focus: Broad indoor houseplant use
Added ingredients: Nutrients for up to 2 months (product details claim)
Price: £8.90

What We Like

Coir and perlite blend that is free-draining
Larger 8L pack than the 3L Growth Technology bag for £1.65 more

Considerations

Costs £1.94 more than the Miracle-Gro 10L bag for 2L less mix

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