Hi: The "mystery plant" is Lobelia laxiflora. It is quite a common plant in Mexico and I see it a lot during the course of my fieldwork. The flowers are very beautiful and seem to hover in the air as they dangle from their stalk, but the plant itself is a somewhat large and ungraceful shrub. Of course, it is possible that Tony at Plant Delights might have a more compact, "garden-friendly" cultivar available. The plant grows at high altitudes in filtered light and is accustomed to xeric conditions during winter so it is possible that it could be quite hardy in the southern United States. The flowers are a hummingbird magnet. The thought had crossed my mind of collecting seed to share, but the plant in its undomesticated state (in my opinion) would not make a good candidate for a perennial garden. Some work with line-breeding should result in a more compact plant that is more floriferous...now THAT would be worth purchasing. -Dennis