Posted: 11/10/2014 at 10:36
I could have a great bonfire if I tried that pansyface!
I'd agree with nut - if they're tree ferns I wouldn't want to pile a load of solid clay round them, although as far as I know it's the top of the trunk which is the 'live' bit and the main trunk is sort of static, so perhaps someone who knows more about them can advise on that.
Mel - normally you'd make a separate bin for letting leaves rot down - a cage of wire mesh is the usual way, and you would mix your compost in with the clay to help open it up and make it a better medium for use, but 3 cubic metres is a lot of clay - probably too much for the amount of compost you have. You could mix the compost and clay half and half, let it break down a bit over winter as nut says, then you can use it in the garden for beds and borders. Alternatively, get rid of the clay altogether somehow and just use the compost as a mulch on existing areas.