Ceanothus thyrsifolius or the Blue Blossom Ceanothus is a vigorous evergreen shrub with spreading branches.
Its foliage is shiny, green and oval in shape which have prominent veins.
In late spring and early summer it produces dense cylindrical clusters or pale blue flowers that make a striking and lovely display.
Ceanothus thyrsifolius can be planted as a single feature but is best in groups, especially against walls where you can gain the advantage of the massed colour.
Be aware that Ceanothus can be rather short lived, especially in warmer and wetter climates.