Posted: 22/09/2014 at 07:24
Pyracantha is evergreen and has white flowers in spring followed by red, orange or yellow berries in late summer and autumn. It is a very good host for wildlife providing shelter, nectar and berries for insects and birds.
There are two evergreen honeysuckles you could try - Lonicera japonica 'Halliana' AGM: An evergreen or semi-evergreen, vigorous climber with dark green leaves and white fragrant flowers from spring to summer. Height: 10m (33ft).
L. henryi: This is an evergreen, vigorous honeysuckle with purplish-red flowers between early and mid-summer, followed by purple-black berries. Height: 10m (33ft).
If your house is not too exposed to cold in winter or heavy frosts in spring you could also look at evrgreen forms of clematis such as cirrhosa which has matt red or cream and purple speckled flowers in winter or armandii which has scented white flowers in spring. Use this site to search for more info http://www.clematis.hull.ac.uk/new-clemlistsearch.cfm
You would need to drill eyescrews into your wall and thread and tension wires horizontally at 12 to 18 inch intervals so you can train and tie in your chosen plants.
For self clingers you need to look at the hydrangea mentioned above or else a variegated ivy which will be slow to cover but will eventually provide shelter for insects and, when mature, flowers and nectar followed by berries but that will take years.. Just don't let it get in round your windows or the roof as it gets higher.
You will also need to do a lot of soil improvement and make sure the roots of the plant are well away from the wall to avoid its drying effect and the rain shadow from the roof. Make your planting hole 2'/60cms away from teh wall but with the stems angled towards the wall. Water in well and mulch to retain moisture.