Dutch grown Ixiolirion have bad reputation here too. So I did not expect too much when I collected them among other things in Central Asia two years ago. Nevertheless, it is still alive after two winters and it gave me good blooms this spring. Interesting, two clones have very different bloom time. First one bloomed in late May, second one bloomed after mid June when first one has almost ripe seeds. I must say, the past summer was very hot and dry. I'm not sure it needs good drainage because it is very widespread in the nature and is really a weed on the plains and fields. Yuri Pirogov near Moscow, Russia zone 3 or 4