Posted: 05/06/2015 at 12:35
Hydrangeas will struggle there in a hot sunny situation Scgh.
a phormium in the centre would look nice there.......a cream variety like Tricolour would look nice in front of the red wall.
senecio sunshine is a low growing, mound forming grey foliage yellow flowered shrub and would enjoy those conditions. i agree with choisya, the green form. aromatic evergreen glossy foliage with delightfully scented flowers in late spring.
A conifer like taxus standishii for a lovely erect narrow shape or a mound forming variety will give easy care, attractive foliage.
For a brilliant show of colour from spring to autumn check out cotinus royal purple. Spectacular red/purple foliage amd would thrive there.