I think that lilacs do particularly well in cold-weather areas but there are several varieties of lilacs, and I know I've seen them growing in warm-weather states as well. Lilacs are soothing to me, probably because we had a large hedge made of lilac bushes that extended all along our front yard, separating it from what we called the side yard, despite the fact that they were both on the same side of the house. I have always loved the scent of lilacs, and I'm sure that it has to do with these early memories. Pretty much every Swedish family has a lilac, the original stemming from a sprig of lilac that was brought with them when they came to this country. The lilacs were so thick that, as a very young child, I would have a tunnel that led the length of the hedge, down the middle of it. I'd like to see my other lilacs growing as well, and producing their own flowers. I know that I have a few varieties of lilacs but I'm not sure that that one is even a lilac.