You mentioned it in your opening post but have you given Vetiver a go?
it does well for me here.
Originally Posted by Grahame
Yeah, I might give Lomandra a go too, and I'm keen to see what vetch can do here. I've never grown it before.
I might also use some canna lilies to the north as part of a small wind break - it dies down over the winter here too, but I have heaps of it.
The ground is generally too heavy for bamboos around here.
I'm thinking perhaps cannas at the back, followed by lomandra and then a front row of comfrey. for a nice little weed/windbreak.
I used to grow clumping bamboo in dense clay soil of northern california with no water ever given to them. They are very versital.