Hi sunny,
I live in a 9a but grow mine in pots. I have been told that I can plant them in the ground here though. This is my first year with them. I have red Ti, pink sister, red sister, kiwi, and peter buck. I have had them sitting out in the yard even though it hit 30's and had some light frost. It didn't seem to bother them. I recently moved them under the porch roof where they will stay till Feb. The colors seem to actually be better since it cooled off. They are pretty carefree and easy to grow. You will enjoy them. GL
~SJN

I've grown Ti in the ground in 8B for years. If it freezes, it comes back.

I planted on in the ground this summer and I'm in Dallas, zone 7B/8A. I'll let you know if it comes up this spring. E-mail me if I forget to let you know.