Posted: 11/04/2014 at 08:08
At my granny's garden when I was a child, they ran rampant on well-drained loam with a lot of leafmould in a north facing bed against the house where they got dripped on by inefficient guttering.
When we left our last place I'd just about got them going in well-drained city dirt with the addition of lots of compost, FYM, and leafmould, this time in a northfacing garden against a shed wall with a constantly dripping gutter.
I've not yet decided where to try them here - the guttering is too good.
The constant factors seem to be leafmould and drips.