Posted: 14/02/2018 at 21:12
You'll need to fork in plenty of well rotted garden compost or manure to break up teh clay and improve its texture and thus allow roots to get down and find the nutrients and water they need but then you'll have plenty of choice. Have a look at these for starters:-
Viburnum plicatum f tomentosum – Clusters of white flowers from spring and thru summer, autumn leaf colour, sometimes red berries that turn black. Compact. Grows up to 2m.
Viburnum carlesii – different leaf shape. Fragrant flowers in spring.
Lonicera standishii “Budapest” – scented flowers in winter and early spring then followed by bronze foliage which turns dark green. Semi evergreen in milder winters. Shrub, not climber.
Cornus sanguniea “Winter Beauty” - deciduous but has colourful stems all winter and colourful foliage in autumn. Cornus alba sibirica is another with very bright red stems in winter if pruned back every spring and good autumn colour.
Tree peonies – several available with different flower colours from yellow to pink.
Buddleias would attract lots of butterflies and come in a variety of flower colours now. Need pruning back every spring to control growth.
Look at roses such as Nevada, Bloomfield Abundance, Marguerite Hilling, Vanity, Claire Austin