I'd like to grow a Ceoanothus as a tree. which species is best?

Ceanothus 'concha' has lovely deep blue flowers. I have grown this as a shrub and it got to about 8 feet tall even though I pruned it ever year. It blew over in a gale after about 5 years so I don't know how big it would have got but it does grow fast so might make a good tree. Interesting idea, might have a go myself as am looking for an evergreen shrub to grow as a tree.

have just read that 'concha grows to 3 m height as a shrub so might wellexceed that if grown as a tree.