Kohlrabi?

[tuk50]

We purchased our first kohlrabi this past weekend at a farmers market and loved it. I thought we might try and grow a few this fall.. The farmers market was in Las Cruces, New Mexico and my climate here in Tucson is very similar, so I think it should do well.
is there any special tips to growing this wonderful vegetable? I found an article that said it would handle a light frost .. how low a temp will it handle if we left it in the garden in late fall and early winter?