I introduced this plant to Australia from seed I gathered in New Zealand in 2000. I had not wanted it distributed but if you give anything to one person that is the risk. After some years I decided it was worth growing after all so I got a plant back.
It is very close to fallax but the spikes tend to be thicker and the flowers have a brightness of the blue more so than the inky blue colour of fallax.
It flowers mid winter.
It will frost under minus 1.