This beautiful perennial with white flowers is a gigantic species of Dietes, with wide and elegant leaves, reminiscent of Phormium tenax. It is endemic to the remote island of Lord Howe, which is also home of the Kentia palm, Howea forsteriana. Just as the Kentia, it is very easy to grow as it grows wild from the costal strand up to the top of the wettest peaks. It does well in warm mediterranean condition and it will survive to short, light frosts too.
Picture from WIkipedia: By Quartl - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=14780847
|Minimum winter temperature
||10 ºC to 15 ºC