# Hardys Mature Plant Compost, 25L, John Innes No.3

Hardys Mature Plant Compost is a 25-litre John Innes No.3 mix presented for established plants in pots and containers. Its loam-based composition and claimed slow-release feed make it suited to nutrient-demanding mature plants, while the listing also describes indoor and outdoor uses.

- [Original product page](https://bargainpostbox.co.uk/product/hardys-mature-plant-compost-25l-john-innes-no-3)
- [View offer](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Hardys
- Model: AFRA-HG-HOM-0295
- Category: Tools & Garden > Plants & Gardening
- Price: 11.39 GBP
- Previous price: 14.99 GBP
- Discount: 24%
- Price checked: 2026-11-12T18:06:15.907Z
- Rating: 4.6 / 5
- Reviews: 61

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing positions this loam-based compost for mature, established plants in pots, tubs, window boxes and flower beds.
- The claimed composition includes horticultural grit and a water-activated slow-release feed lasting four months.
- The listed uses cover both houseplants and outdoor plants, with examples including shrubs, fruit bushes, climbers and trees.

## Pros

- Its stated John Innes No.3 formulation targets established plants with higher nutrient needs.
- Indoor and outdoor use claims give it flexibility for mature container plants around the home and garden.

## Specifications

### Identity
- Brand: Hardys
- Model: AFRA-HG-HOM-0295
### Size and weight
- Volume: 25 Litres
- Weight listed: 11 Kilograms
### Composition and use
- Compost type: Mature Plant Compost
- Formula: John Innes No.3
- Base and ingredients: A soil loam base is filled with rich organic matter, horticultural grit substrate, John Innes No.3 infused nutrients, and a water activated slow release 4 month feed.
- Style: Classic
- Country of origin: Ireland

## Before you buy

- The product name and description consistently identify a 25L John Innes No.3 mature-plant mix, but the listing also calls it multi-purpose and seed compost without explaining whether those are equally suitable uses. The slow-release feed duration is a stated claim, not an independent performance result.

## A good fit for

- Gardeners repotting established houseplants or other mature container plants.
- Buyers seeking one listed compost for mature plants in indoor pots and outdoor containers.

## Less suited to

- Buyers who need a compost specifically formulated for seeds or seedlings, as the listing does not clarify suitability for that purpose.

## Customer feedback

Customer feedback reports positive impressions of compost quality and plant growth, including a comment that plants were thriving. The overall rating distribution is mostly five-star, but a small share is one-star, so experiences are not uniformly positive. These comments may matter to buyers using the mix for established plants, but they do not verify the listed formulation or feeding duration.
- Positive themes: Customer feedback describes the compost quality positively.
- Positive themes: Customers report positive plant-growth results.

## Frequently asked questions

### What plants is this compost intended for?
The listing describes it for mature, established plants, including houseplants, shrubs, fruit bushes, climbers and trees, as well as plants in pots, tubs and window boxes.
### What does the listing say is in the mix?
It describes a soil loam base with organic matter, horticultural grit, John Innes No.3 nutrients and a water-activated slow-release feed claimed to last four months.
### Can it be used indoors and outdoors?
Yes. The listing presents it for both houseplants and outdoor plants, including container and garden-bed use.

## Alternative options

- [Hardys Multi Purpose Compost, 20L – Rich Soil for Plants Indoors & Outdoors \| Multipurpose Compost for Outdoor Plants & Indoor Plant Soil for Houseplants, Containers, Potting, Seeds, Mature Varieties](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Hardys Potting Compost, 25L - John Innes No.2 Formulated Potting-On Compost \| Establishes Strong Healthy Roots, Rich Nutrient Content, Soil for Garden Pots & Indoor House Plants, Ready Mix](https://bargainpostbox.co.uk/visit/hardys-john-innes-no-2-potting-on-compost-25l)
- [Pelle & Sol Lawn Dressing Compost, Top Soil for Grass Seeding \(25L\) \| Premium Lawn Sand Mix, For Lawn Levelling, Overseeding and Repair, Top Soil for Grass Seeding, Soil Improver for Garden Lawns](https://bargainpostbox.co.uk/visit/pelle-sol-lawn-dressing-compost-25l-db11413)
- [Hardys Mature Plant John Innes No 3 Compost, 8L - Peat Free with Worm Casts \| Houseplant Potting Mix & Soil for Outdoor Plants, 14/16/18 NPK, pH 6.0-7.0, for Established Flowers, Shrubs, Small Trees](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Jazooli Multi Purpose Compost Soil, 60L - Plants, Seeds & Seedlings Compost \| All-purpose outdoor and indoor plant potting, nutrient rich fertiliser, suitable for garden, pots, planter beds](https://bargainpostbox.co.uk/visit/jazooli-multi-purpose-compost-60l)
- [Laeto Houseplant Potting Mix 40L, Indoor Plant Soil for Repotting Plants \| For repotting, supports monstera, snake plant and peace lily, nutrient-rich indoor soil](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Laeto Top Soil 35L x 2, Rich Landscaping Soil for Plants Lawns Flowers \| For gardens and landscaping, rich organic soil, supports healthy plant, lawn and flower growth](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Houseplant Potting Mix Soil Compost 35L Professional Formula - Ideal For All Indoor House Plants To Provide Healthy Growth & Greener Leaves 6 months feeding with added Perlite - By Jamieson Brothers](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Hardys Multi Purpose Compost, 40L – Rich Soil for Plants Indoors & Outdoors \| Multipurpose Compost for Outdoor Plants & Indoor Plant Soil for Houseplants, Containers, Potting, Seeds, Mature Varieties](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [Jazooli Multi Purpose Compost Soil, 40L - Plants, Seeds & Seedlings Compost \| All-purpose outdoor and indoor plant potting, nutrient rich fertiliser, suitable for garden, pots, planter beds](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)
- [20L Peat Free, Multi Purpose Fertiliser for Indoor & Outdoor Plants, Ideal for Small to Large Plant Growth](https://bargainpostbox.co.uk/visit/hardys-mature-plant-compost-25l-john-innes-no-3)

## Add-ons

- [Hardys Multi Purpose Compost, 60L – Rich Soil for Plants Indoors & Outdoors \| Multipurpose Compost for Outdoor Plants & Indoo](https://bargainpostbox.co.uk/visit/hardys-multi-purpose-compost-60l)
- [Hardys Ericaceous Compost 50L - Organic Compost for Outdoor & Indoor Plants \| 4.0 pH Acidic Soil, Suits New & Established Eri](https://bargainpostbox.co.uk/visit/hardys-ericaceous-compost-50l)

## Images

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 1](https://bargainpostbox.co.uk/i/Unq2CNmznOJ1v19oDgNxhNNzCcoA8xbGf8kIBV8PswzTnVuinkPfATmWJJqcOLZQLIHroqwIP240xDiLH1J4g-ES4WlGzVfEorZr-wXboCCa9ld8oHtLjkBB.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 2](https://bargainpostbox.co.uk/i/gSKkOJPmIaa6GxDV4e8QeA_OOR-_EnvybMr6AcDfkyLhLK3e1qfaof9jKN05wc9eWV1wxor-lPjwbIoCp8d955qhBtFf8xgLm7ySXBUy-QrkKrKl-kaCgjPX.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 3](https://bargainpostbox.co.uk/i/hzEVTgyDALEpWOFBD57iSC5iZilcemx8nUvhjfM6LLmjiTPBSjRjCDrbiKIr38Qgq5kHFHnAIGme_7ryTIbpNhgvstdjV7Jd4A9wy9wjHt_XtC2nyVy38bpH.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 4](https://bargainpostbox.co.uk/i/uMtHskdlQaZsGnNGgZuRc3NMGjhbIl2IRPGxiyP7pgOBCQyJfRtx9qauoDw1nA36rxk_qIAhANqM4QNaDJLvcBvHUga33t2de8vmRo4_TMLUzmlrP_jBl60V.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 5](https://bargainpostbox.co.uk/i/C5GExwVYcJybiBgp4I6RfyHay8FCPZJj_70XJPX4IRQWkdTwiiaIS8QV7TQZuZqXM2LW18LOZ0539N0adfyhRszZ8xlyLJp4gGRUyDwH99Hxd4XpMTImJ6hD.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 6](https://bargainpostbox.co.uk/i/A2-3pUvmgyVofEtk_z4YLzXROQDN07boy42Y_mLC4zXjReNpSRqaiNAXRinaa-E-lfiEMGE8bd0kMjpRUncLh7ecRSAMEkGmrLvAWX1yIWfAX2OyrzyECsDQ.jpg)

![Hardys Mature Plant Compost, 25L, John Innes No.3 — 7](https://bargainpostbox.co.uk/i/a2WO5-409PALdZOcNxeoM788Ei9KtTZpSzZmioGa6hOWXDqZ3CNPS4-A_gOa34KjAPc84fmXtmmwWV4bGHoz2LKvD_7qiB5GI6xStgyFCwznsfRnopBvWpfJ.jpg)