Fertile Fibre

£22 for 60 litres

fertilefibre.com

Coir-based multipurpose, seed and potting composts come in organic, vegan and biodynamic ranges. With added nutrients and no green waste, they are fully accredited by the Soil Association. Sizes range from 10 to 60 litres, and you can also buy in bulk in loads of 1,000 to 2,000 litres. While not available from garden centres, Fertile Fibre does deliver – just one bag or an entire load.