In message , JennyC
writes

What favourite plant would you not be able to live without, providing
the conditions were suitable in the new garden...?


In my case I think it would have to be the irreplacable plants - for
example the variegated sport of Lavatera x clementii 'Barnsley' and the
pink-flowered sport of Alcea x Althaea 'Park Allee'. (Perhaps in these
cases my opinion would be different when I've grown them long enough to
evaluate them.)
--
Stewart Robert Hinsley