I have one of these and I just love it. Since it's not hardy to my zone I keep it in a container and overwinter it in my garage where the temperature gets to around 40 degrees in the coldest part of the winter. With occassional watering and a sunny window, it does very well in there. A nice ornamental plant with interesting foliage and pretty blooms. Can't say I've ever eaten any part of it, but maybe this summer!
This was an interesting article re the society garlic. I have had some growing in 2 of my gardens now for many years and they've done great here and have multiplied and I dig them up when they become too dense and plant them elsewhere. I find that they do bloom best in full sun as I have some in full sun and partial sun/partial shade areas. They just keep coming back year after year after dying back in some of our colder winters...my kind of plant.