Biochar / horticultural charcoal
£5 per bag (approximately 5kg).
£50 per bulk bag (approximately 100kg).
Small pieces of charcoal - from 15mm down to dust - made from coppiced British hardwoods.
Supplied "raw". For use as a soil amendment it is recommended to "pre-charge" the charcoal with nutrients and moisture, either by mixing it into your compost heap at the same time as other materials, or by soaking it together with compost and/or your preferred plant food for a week or two.