Grow Media

Grow Media

Growing media, also known as substrate, is the material that plants grow in. It is an essential aspect of plant cultivation, so choosing the right medium for your plants is vital for a healthy crop, increased resistance to pests and disease, and high yields. With a wide selection of different growing mediums such as potting mix, coco coir, clay pebbles, hemp, perlite, peat, rockwool, and more, there is something to suit all types of plant species and growing environments.

At London Grow, we sell the very best growing media to help plants thrive. With a wide choice of substrates from reliable, leading worldwide brands, your plants are in safe hands. Order online for fast delivery or visit our superstore to browse the range.

View more...

Filters

Filters
Sort by:

54 products

Jiffy PRO7 60/40 Clay Coco – 45L bag - London GrowJiffy PRO7 60/40 Clay Coco – 45L bag - London Grow
Jiffy PRO7 All+ Mix - London Grow
Jiffy
Jiffy PRO7 All+ Mix Sale price£12.95
Jiffy PRO7 COCO 70/30, Coco Perlite mix – 50L bag - London Grow
Jiffy PRO7 Light, Peat Potting Mix 50L - London GrowJiffy PRO7 Light, Peat Potting Mix 50L - London Grow
Jiffy PRO7 100% Pure Coco - 50L - London GrowJiffy PRO7 100% Pure Coco - 50L - London Grow
Jiffy PRO7 BATMIX - 50L Bag - London GrowJiffy PRO7 BATMIX - 50L Bag - London Grow
Substra Coco Brick 10L Single Brick - London GrowSubstra Coco Brick 10L - London Grow
Substra
Substra Coco Brick 10L Sale priceFrom £1.60
Biobizz Light Mix Potting Soil - London GrowBiobizz Light Mix Potting Soil 20L - London Grow
Biobizz All Mix Potting Soil - London GrowBiobizz All Mix Potting Soil 20L - London Grow
CANNA Coco Professional PlusCANNA Coco Professional Plus
CANNA
CANNA Coco Professional Plus Sale priceFrom £14.95
CANNA Coco Natural 50LCANNA Coco Natural 50L
CANNA
CANNA Coco Natural 50L Sale priceFrom £13.95
CANNA Coco Pebble Mix 50L - London GrowCANNA Coco Pebble Mix 50L
CANNA
CANNA Coco Pebble Mix 50L Sale priceFrom £18.95
CANNA Terra Professional 50L Single - London GrowCANNA Terra Professional 50L
CANNA
CANNA Terra Professional 50L Sale priceFrom £12.95
CANNA Terra Professional Plus 50LCANNA Terra Professional Plus 50L
CANNA Aqua Clay Pebbles - London GrowCANNA Aqua Clay Pebbles - London Grow
CANNA
CANNA Aqua Clay Pebbles Sale priceFrom £9.95
PLANT!T Perlite - London GrowPLANT!T Perlite 10L - London Grow
PLANT!T
PLANT!T Perlite Sale priceFrom £5.95
PLANT!T Vermiculite - London GrowPLANT!T Vermiculite 10L - London Grow
Plant!t
PLANT!T Vermiculite Sale priceFrom £6.40
Gold Label - 60/40 Pebble Coco Mix 45LGold Label - 60/40 Pebble Coco Mix 45L
Gold Label Special Mix 45L - London Grow
Ecothrive - Eco Life Soil 45L - London GrowEcothrive - Eco Life Soil 45L - London Grow
Ecothrive - Coco Lite 50L - London Grow
Ecothrive - Coco Pro 50L - London Grow
Biobizz Coco Mix 50L - London Grow
Biobizz
Biobizz Coco Mix 50L Sale price£13.95
Plagron - Batmix 50L - London Grow
Plagron
Plagron - Batmix 50L Sale price£16.95
House & Garden Bat Special 50L - London Grow
Growth Technology - Orchid Focus Repotting Mix - London GrowGrowth Technology - Orchid Focus Repotting Mix - London Grow
Coming soon
Growth Technology - African Violet Focus Repotting Mix - London Grow
Growth Technology - Citrus Focus Repotting Mix 8L - London GrowGrowth Technology - Citrus Focus Repotting Mix 8L - London Grow
Growth Technology - Houseplant Focus Repotting Mix 2L 3L - London GrowGrowth Technology - Houseplant Focus Repotting Mix 2L 3L - London Grow
Growth Technology - Bonsai Focus Repotting Mix 3L - London GrowGrowth Technology - Bonsai Focus Repotting Mix 2L - London Grow
Growth Technology - Cactus Focus Repotting Mix 3L - London GrowGrowth Technology - Cactus Focus Repotting Mix 3L - London Grow
Cultilene Rockwool Cube - London GrowCultilene Rockwool Cube 75mm - Small Hole - London Grow
Cultiwool
Cultiwool Rockwool Cube Sale priceFrom £0.40
Cultilene Rockwool CRB Tray 35mm - 77 Cubes per Tray - London GrowCultilene Rockwool CRB Tray 25mm - 150 Cubes per Tray - London Grow
Cultilene OpTIMAXX Rockwool Slab - London Grow
Grodan - Grow Cubes 90L Box - London Grow
Grodan SBS Cubes Dutch - 18 Trays - London Grow
Grodan
Grodan Rockwool SBS Tray Sale priceFrom £9.95
Grodan Rockwool Cubes 100mm - Large Hole / Full Box (216 Cubes) - London GrowGrodan Rockwool Cubes 75mm - Small Hole / Full Box (384 Cubes) - London Grow
Grodan
Grodan Rockwool Blocks Sale priceFrom £0.50
Grodan - 1m Slab Gro-Top Master - Pack 12 - London Grow
Grodan
Grodan GT Master Slab Sale priceFrom £6.95
BioBizz Pre-Mix 5L - London GrowBioBizz Pre-Mix 25L - London Grow
Biobizz
BioBizz Pre-Mix Sale priceFrom £9.95
Plagron - Royalmix 50L - London Grow
Plant Magic Soil Supreme 50L - London Grow
Save £1.00
CANNA Coco Slab 1m - London Grow
CANNA
CANNA Coco Slab 1m Sale price£5.95 Regular price£6.95
Substra Quick Coco Pot 10L - London GrowSubstra Quick Coco Pot 10L - London Grow
Coming soon
Seed It Hemp Mat for Microgreens (Pack of 3) - London GrowSeed It Hemp Mat for Microgreens (Pack of 3) - London Grow
Coming soon
Seed It Hemp Mat for Microgreens (15m Roll) - London GrowSeed It Hemp Mat for Microgreens (15m Roll) - London Grow
Coming soon
Substra Coco Coir 50L - London Grow
Coming soon
Grodan Vital Slab 1m - London GrowGrodan Vital Slab 1m - London Grow
Grodan
Grodan Vital Slab Sale priceFrom £5.95
Biobizz Worm Humus 40L
Cultiwool Mini Slabs - Box of 36Cultiwool Mini Slabs - Box of 36
New
Silvaperl Horticultural Perlite 100L

What’s the best growing medium for plants?

The best growing medium for plants will vary depending on the species and growing method used. If you are using hydroponic growing techniques that require a substrate, soilless substrates such as coco coir, rockwool, hemp, and clay pebbles are very popular and allow for total control over the growing environment.

For container gardeners and those growing plants in beds outdoors, potting soil or mix provides the perfect growing media for healthy plants, and fruit and vegetables that are bursting with flavour.

Check out our guide on the best growing medium for an in-depth analysis of the pros and cons of the different types of substrates.

Soilless Substrates

For hydroponic systems, soilless substrates are usually preferred over organic material such as potting soils or mixes. This is because they are pathogen free, provide optimum drainage, aeration, and oxygenation, and can help to deter pests and disease. Roots easily intertwine around the media and are less likely to become compacted or suffer root rot due to oversaturation and compression.

Soilless growing media like coco coir, clay pebbles and rockwool are also pH neutral. This means that the growing medium won’t affect the delicate pH level of the nutrient solution. Another benefit is that they don’t contain any nutrients. As a result, this allows for much greater control over the amount of nutrients your plants receive.

Coco Coir Substrate

Coco coir is a popular soilless substrate derived from natural fibres from the coconut husk. It can be used as a standalone growing media or you can mix it with other materials such as clay pebbles or perlite. You can even mix it in with soil to improve its texture and drainage properties.

Coconut coir offers a wide range of benefits to growers such as an optimal balance of water retention, drainage, and aeration. It’s also pH neutral, so won’t affect your nutrient solution, and it has excellent cation exchange capacity (CEC) which means it can retain nutrients and release them to your plants over a longer period of time.

We sell the very best coco coir products from all the leading brands such as CANNA, Ecothrive, Biobizz, and Gold Label. Buy coco coir in bags, slabs, bricks, and pellets to suit your growing needs.

Clay Pebbles for Plants

Clay pebbles are small balls of clay that are kiln heated at high temperatures causing them to expand to create porous pellets that provide a versatile growing medium for hydroponic and soilless gardening techniques. They can be used alone or mixed with other growing media such as soil, compost mixes, coco coir, and rockwool.

Benefits of clay pebbles include excellent drainage, and aeration and oxygenation of the root zone to promote healthy root development and overall plant health. The pebbles are also free from pathogens, limiting the risk of pest invasions and disease. 

Due to their porous structure, clay pellets have the ability to retain both water and air within the micro pores, helping your plants to receive optimum moisture and air when they need it.

Rockwool Substrate

Rockwool, also known as stone wool, is an increasingly popular growing medium used in plant cultivation that is ideal for hydroponic systems and soilless gardening. It is a soilless substrate, and as the name suggests, rockwool is made from rock based minerals like volcanic rock that is spun into fine very fine fibres.

Due to the high temperatures used in its manufacture, rockwool is regarded as a sterile substrate that is free from pathogens. It is pH neutral, and its structure encourages uniform rooting patterns and provides the ideal conditions for moisture and nutrient distribution.

Available to buy in cubes,  slabs, and trays, it is compatible with most growing systems. At London Grow, we sell rockwool from all the leading international brands such as Grodan, and Cultilene, to ensure you can achieve superior harvests, time and time again.

Potting Soils & Mixes

Potting soils and mixes are the go-to growing media for urban farmers and green fingered gardeners that grow plants in containers, outdoor beds or allotments. Specially formulated to support plant growth and health, you can achieve excellent harvests and great tasting produce. 

Potting mix is a soilless grow media that contains a mix of compostable organic matter and other materials such as coco coir, bark, peat moss, perlite, and vermiculite. With a larger particle size compared to traditional soil mixes, potting mix provides good drainage, and excellent aeration and oxygenation of the root zone. 

The light texture of a potting mix won’t compact the plant roots, helping to minimise the risk of root rot and waterlogging. Mixes are ideal for container gardening, young plants and seedlings, and you’ll find a range of options with varying levels of pre-fertilisation to suit the needs of your plants.

Potting soil comprises of high-quality soil and organic matter, and is rich in minerals and nutrients. Due to the naturally dense texture of soil, potting soils are often mixed with other materials such as perlite, sand, coco coir, and vermiculite to improve drainage and airflow. In addition, these soils often contain pH balancers, fertilisers and wetting agents. 

As potting soil is denser than potting mix, it is not ideal for container gardening because it can compact the root zone. It is best suited as an improver for outdoor beds to enhance the quality of the natural soil.

If you’re looking for a quality substrate that does it all, the bestselling BioBizz All Mix won’t disappoint. This heavily pre-fertilised organic soil is loaded with nutrients to sustain optimum growth without the need for fertiliser for the first couple of weeks. It is carefully mixed to achieve a full micro active ecosystem to emulate rich outdoor soil and doesn’t contain any synthetic fertilisers. It has a high EC (electrical conductivity), and self-regulates to help maintain pH levels. All Mix is perfect for cultivating a wide range of organic fruit, vegetables and other tasty consumables.

For those looking for a quality mix but want more control over nutrient levels, opt for BioBizz Light Mix Potting Soil. This mix is based on virgin peat moss and is ideal for seedlings and young plants. It has a low fertiliser content to ensure the soil isn’t overloaded to reduce the risk of nutrient burn.

We sell a wide range of potting soils and mixes from all the leading brands including CANNA. Ecothrive, Gold Label and Plagron, and more, to help you achieve blooming crops and excellent harvests.

Order Growing Media Online for Delivery or Collect from Our Superstore

Whatever grow media you need, you’ll find it right here at London Grow. Whether you are growing indoors or outdoors, we have the perfect substrates for your plants and growing method. If you need any help deciding on the best growing medium for your plants, either pop into our store or contact us for expert advice.