Dear Mary Sue. Nice to see Wachendorfia thyrsiflora mentioned. This plant, to me is quite stunning when in flower, it does like moisture and when established puts on quite a show. It does need lots of room, that's for sure. It must be said it is a rather 'coarse' plant. In the wild, it is, not only found with the Zantedeschia aethiopica, but Dierama pendulum is in the same location, but in a slightly drier area, but still with much moisture. The Wachendorfia will form large clumps and also spread. I think it is most effective when it can be viewed from a distance so the coarse foliage does not detract. When driving along the Garden Route, especially in the Knynsa area, it stands out. Cheers John E. Bryan