In article ,
Gilly wrote:
What can I do with the old, depleted soil from various pots and containers?
The soil is compacted with roots, so it's more or less one big hard ball.
Our wonderful town council's rules say that soil can't be put into the
dustbin, nor can soil be put into the green garden waste bin! Can it be put
into a compost bin? Failing that, I suppose I'll have to hope that the
garbage fairy will come and magically spirit it away.

It will not be good in a compost bin, but is fine in a heap or bin
of its own. Keep it damp and aerated and the roots will rot down.
You can then mix it with compost from the normal bin and reuse it!


Regards,
Nick Maclaren.