Hello all, For what it is worth, I have seen S. formosissima in situ in Mexico at elevations of about 4000ft to 6000ft. I'm sure it gets higher than that. These were sunny sites in rocky soil that is wet to moist in summer. Subject to frost one might think, but CHICAGO? Looking through some of the literature there are different forms of this species that have attracted attention in times past. I think one called "Williamsii" had more orange in the tepals and also glaucous foliage. Does anyone grow distinct color forms of the Aztec Lily? By the way, S. howardii is a very distinct entity, especially in the narrow foliage and smaller bulbs without the pronounced neck. It grows in hotter, drier places and needs a long dry dormancy but otherwise is not difficult. Typically mine flower before the leaves emerge and they are dramatic, a little smaller than S. formosissima and with slightly narrower segments. I have a crop of seedlings and hope to offer it shortly. Dylan Hannon othonna@gmail.com