They like our hot summers as long as they get enough water. I grow mine in the same conditions as my roses. Be careful to not bury them with the buds underground or they may not bloom for you. Don't expect blooms for the next two years even if all is done right. It is worth the wait as they will bloom for many years. Al

As your winters are not severe, the eyes should be at ground level. If you bury too deep you will get foliage but no blooms. And don't mulch in the winter, they need the chill. Mine are on sunny west side of the house, full sun until late afternoon. They do great there. I planted mine from bare tubers and got lots of blooms year 3.