CeCe -- i'd think it'd be ok. My garage rarely dips below freezing. it's insulated, but not heated. my sun room will dip into the 20s... i think the worst is the wind.
though i've never over wintered plants -- may this year though.
speaking of the frost... as with everyone else, in Wisc, we got nipped early -- in Sept sometime... some of the plants were hit hard -- but then perked back up with the warmth later in the month.
I brought home a huge [in a pot] Pineapple sage... never bloomed, but it's bit, about 30" tall. I may stick it in the garage, or basement [that will be 60-70 degrees] I also brought home a cute little fuchsia in a pot.. its hanging in the DR window.
Here in IL, we've had some light frost, but it hasnt hit near the house yet, just lightly in the grasses away from the house. i still have tons of plants blooming. I find what gets hit hte hardest are impatiens. In Wisc, I had to dump them the day I left [10-20-11] too bad... they all were still blooming.
I have to say.. i will give up after a hard frost. most of my plants that I really care about -- bloom-wise, are against the house, so they are more protected.
