Thanks, Cinda -- mine is growing in a pot, I think I'll try cutting it back quite a bit and putting it in a south-facing widow in a cool room; our "shop" stays around 55F during the coldest part of the winter and has the only suitable window (all of the other windows in the house are low-E glass, which doesn't seem to let enough light in for most things), so I'll try it there -- along with my rosemary plants that have happily spent the last 3 winters there. It started easily from seed, so I'm not too worried about "losing" it.
Gardeningal, I appreciate the link, but unless I missed something in the Wiki article, it doesn't really say how hardy the plant actually is -- ?