Compost and Soil Improvers

Grow a healthy, fertile garden with Johnsons’ compost and soil improvers. Choosing the right growing medium can make all the difference to your plants, aiding root development and providing the ideal balance of nutrients and moisture. Whatever you’re growing, from fruits and veggies to flowering plants, you’ll find the perfect composts and soil improvers below.

Choose from a variety of multipurpose and peat-free compost for soil improvement – perfect for everything from garden beds and borders to house plants. We also stock a great range of soil improvers to enhance the fertility and structure of your existing soil.

31 products

40ltr SylvaGrow Multipurpose Peat Free Compost

SylvaGrow Multipurpose Peat Free Compost + 1 more

From £14.95

Orgro Concentrated Manure Fertiliser - Bulk Deal + 1 more

From £20.95

Coco Grow Pure Coir Chip Mulch 60ltr

60ltr Code: 54821

£16.95

Vermiculite 10ltr

10ltr bag Code: 53462

£13.95

Peat Free Seed Compost 10ltr

10ltr Code: 58952

£6.99

Coco Grow Peat Free Pure Coir Compost Boost

75ltr Code: 54823

£17.95

Coco Grow Peat Free Pure Coir Compost

75 litres Code: 54819

£15.95

Coco Grow Peat Free Pure Coir Seed Germination Dots x 50

50 x 40mm Dots Code: 54824

£10.95

Quality Potting Compost 60ltr

1 x 60ltr bag Code: 53837

£16.95

Vermiculite 100ltr

100ltr Code: 53812

£48.95

Coco Grow Peat Free Compost

6 x 9 litres Code: 56038

£16.95

Perlite - Compost Improver 10ltr

10ltr bag Code: 51285

£13.95

SylvaGrow Ericaceous Peat Free Compost 40ltr

1 x 40ltr bag Code: 54688

£16.95

Natura Grow All Purpose Feed Pellets 12.5kg

1x 12.5kg pack Code: 58065

£20.95

Rootgrow Mycorrhizal Fungi 360g

360g pouch Code: 52741

£13.95

Bulk Deal 21 x 60ltr Compost

21 x 60ltr Bags Code: 54701

£330.00

Premium Potting Compost 57 x 60ltr Bags

57 x 60ltr Bags Code: 53909

£802.00

SlugLess Slug & Snail Deterrent 20ltr

20ltr bag Code: 53747

£25.95

Fothergill’s 20L Enriched Plant Compost

1 x 20ltr bag Code: 68166

£13.99

6X Chicken Manure Fertiliser 7kg

7kg tub Code: 54072

£14.95

Rootgrow Tomato Starter

6 Biscuit Pack Code: 52749

£5.45

SylvaGrow Ericaceous Peat Free Compost 75 x 40ltr

75 x 40ltr bag Code: 57540

£1,036.00

Rootgrow for bare rooted plants 360g

360g pouch plus gel Code: 52742

£13.95

Sold out

Perlite 100ltr

100ltr Code: 53813

£39.95

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Quality Compost for Soil Improvement

Our high-quality compost to improve soil can work wonders in any garden, helping you grow healthy plants and beautiful flowers. You’ll find everything from general purpose compost to specially formulated potting soils, along with a wide range of additives to promote better drainage, aeration, and water retention. Browse our plant feed and fertiliser range to give your plants an extra boost.

Buy Compost and Soil Improvers Online

At Johnsons, we have everything you need to create the garden of your dreams. From compost and soil improvers to great value garden tools, we only stock the highest quality products to ensure unbeatable results every growing season. Order today for fast UK delivery – 100% satisfaction guaranteed!