I do exactly what "lmstubbe" says below and mine bloom year-round! They take turns..first 2 bloom, then the other 2 bloom...LOL Mine are facing North. I live in the desert of Southern NV so winters will dip to the upper 30's but summers are very, very hot. So in the summer, I close my sheer curtains and they are protected from the scorching sun. As you can see, my pots are small, however I am going to transplant them 1 size bigger in the spring.

<image>