"Double Digger"wrote
Does Rosa rugosa need full sunshine, or would four plants grow just as
well
in a north facing front garden that gets partial sun? The soil is on the
poor side, top soil mixed with a lot of sandy hardcore, having previously
been used for an extra car parking area.

in my experience, they grow well nearly anywhere...
full sun or shady, they seem to do ok..

Morgan
(newbie here)