Duranta 'Geisha Girl'

I had to look this one up - it's frost tender, so it would be an annual over here, probably. How tall does it grow? Do you keep it from year to year?

Duranta's are medium to large shrubs. Geisha Girl will get up to about 2mts x 2mts...Its perennial, MUST be pruned regularly otherwise it goes straggly. I have trained this one as a 'standard' ...the photo is very good. its actually mauve and white flowers. Full sun and very hardy ! Been flowering since Spring and still flowering now in summer.