My ceanothus finally died off this year. It seemed like it has been on its way out the last couple of years actually. Leaves going brown etc. Last summer, I cut off all the branches which had brown leaves on as it seemed to be doing ok near the base - new leaves coming etc. But whether the severe winter killed it off after the hard pruning, I don't know. But it's had it and I've dug it up.
Do ceanothus just get old and give up eventually? It was already big-ish when we moved in 7 years ago. I did like it but don't want to plant another one in its place if it's likely that it was some ceanothus-type disease that might be lingering in the soil ready to kill off any more.