From what I've read, I reckon this one's a little less hardy than others - all planting information is rigorous about saying 'full sun, very sheltered position against a wall or fence'.
I must admit I'm wondering why you'd bother with it - its just an evergreen shrub with white flowers. Ceanothus is usually grown because its got properly blue flowers, not lilac ones, but I suppose its down to personal taste.

I'm going for a very limited colour palette in this garden Bamboo trying to recreate the ethereal nature of a bouquet I have .Plums,palest pink ,violet and lots of green,cream and white .A blue wouldn't fit in at all.I needed an evergreen to give some substance to behind my statue

Viburnum tinus, Choisya, Viburnum burkwoodii 'Anne Russell', Escallonia 'Iveyii' are alternative evergreens with white flowers which are probably hardier.

I've ruled out the ceanothus for this spot Bamboo sorry I missed your last comment .My first thought was viburnum tinus but so many are being ravaged with beetle damage stripping the leaves around here and shes such a slow grower .