Gloriosa superba is now in flower!
It is superb, it is glorious but sadly considered a weed in northern parts of Australia! I've seen it running wild along the foreshore at Noosa in Queensland, but ours were procured from a commercial source in Victoria (where it is not a weed!).
We grow it in large pots so that it can be kept relatively dry during the winter. They also need water during the summer months so are at odds with our climate! The tubers do migrate to the bottom of the pots and out the drainage holes so re-potting is required on an annual or biennial basis. Escapees do not persist in our garden,