Posted: 08/03/2014 at 18:38
The bed must be south west/west facing so it should get reasonable sun from early afternoon onwards. For a bit of structure, if Lavender's happy there, Hebes will be too. There are loads of different varieties and sizes but they're evergreen and most have flowers which attract bees. Palest pink/lilacs through to pink/ purple for the flowers. Easy to obtain. If you like that sort of colour, there will be lots of perennials which will grow well to accompany them - hardy Geraniums and Phlox to name a couple. If you're allowed to use the fence, you could put a few wires on it and get some Clematis in to cover it. Hundreds to choose from, but readily available everywhere and you could have a couple of different ones to give you colour from now till autumn. I take it you may want to sit nearby so scent might be important. You could use a climbing Rose in place of a Clematis or pop some sweet peas in which are very easy. Straight into the ground at this time of year, or you can buy as small plants. They're annuals so you need to sow or plant every year. Lots of colours to suit your own taste. Everything I've suggested would be easy to find in any GC, Nursery or diy outlet.
Hope that gives you a few ideas to start off with