The message
from Chris Hogg contains these words:

I have an east facing corner at the junction of two tall hedges, which
run SE and NE respectively. The hedges are at present leylandii, but
are slowly being replaced by undergrowing with Olearia traversii. The
leylandii will be gone in a couple of years.

The corner is sheltered from our SW salt gales, but because it's in a
rain shadow and because of the leylandii, it gets dry in summer. When
the leylandii have gone, the soil may not be so dry as I don't think
the O. traversii are so thirsty. It gets sun in the mornings until
about 11am in the summer, but not much in the winter. The soil is acid
loam, well draining, and minimum temperatures are about -3C. Location:
west Cornwall.

I'm looking for suggestions for medium to tall flowering shrubs (say
in the range 1 - 3 metres high), preferably evergreen, preferably with
coloured flowers, preferably a bit exotic to take advantage of the
mild climate.

Any suggestions?

Many New Zealand , South African and Meditteranean plats will
tolerate a place where olearia grows and I've found them surprisingly
tolerant of lack of winter sun (in our back garden). I'm aiming at
plants of a similar height (partly because of coastal wind exposure, but
also because we have an unobstructed view to die for). Good survivors
include ceanothus, phormiums, (any) leucospermum (any) pittospermum
(any), fatsia japonica, hydrangea, miscanthus, ozothamnus
rosemarinifolia, corokia virgata, grevillia, sambucus "Black lace",
fennel, rosemary, euryops, bay, hebes, cordylines, euphorbia, fuchsia,
double-flowered gorse (I adore this longflowering scented non-seeding
clippable plant and can't recommend it highly enough) broom ,buddleia.
Then there's the fabulous tall clumping bulbs and rhizomes; crocosmia,
watsonia, nerines, schizostylis, irises.

Janet. (Isle of Arran west Scotland).