Monty suggested that coir is a good alternative to peat.
He said: “Coir is very effective especially if mixed with home-made garden compost and/or leafmould.
“Composted bark works very well in most cases. Composted bracken makes an excellent ericaceous alternative, as does composted pine needles. All are widely available.”
The gardening expert explained that by mixing in “extra goodness” and “improving drainage” for the ease of “root development” you can make the compost better.