It must be at least 15 years or so ago when I grew this as a quick,
stop-gap cover for new fencing while deciding what to plant
permanently. It was hardly any more trouble than growing runner
beans. Maybe the trick is to wait until night temperatures are close
to 10C min and plant against a sunny wall or fence. It's a pretty
thing with rather striking seed pods that I could quite bring myself
to pick for the pot. My main gripe then was that I thought the
foliage was too coarse and dense for the numbers of flower spikes
produced. By early autumn it was getting far too unruly so I pulled
it out without ever discovering whether the roots might overwinter
here.

Ever a glutton for punishment, the following year I gave the spot to
Kennedia coccinea, which turned out to be even more of a thug and
rather mean with its flowers too. Planting 'Scarlet Runner' would
have been a better choice - at least there would have been larger,
brighter flowers in greater profusion plus some tasty beans
afterwards. Lesson learned, I then planted Passiflora x coeruleo-
racemosa, which has behaved perfectly and given many thousands of 4"
wide, reddish purple flowers over the years.