Answer: Unfortunately, it will be difficult to keep it growing long term in a container under home conditions. Azaleas have a spreading, shallow root system so are not well suited to containers. They also need evenly moist yet well drained soil so special attention to watering is required. And in winter, as you mentioned, the roots are not as well insulated in a container as they would be in the ground. If you manage to keep it going over the summer, you might be able to overwinter it in a cool location that is below 45 degrees but above freezing, watering just enough to keep the soil from drying out completely. Otherwise, maybe you could plant it at a gardening friend's house where you could visit it from time to time. I'm sorry I can't be more encouraging.
Q&A Library Searching Tips