You have to basically leave a huge area clear for the bigger leaf native ones. I put in four of them in the area between my driveway and the neighbour's driveway. Result;Sound like your garden rocks .
Each to their own .
Mass planting seems great idea.
I have a few pig faces .
One of them is a monster and wants to rule the garden .
Basically covered the entire 6mx2m area. Looks awesome in spring when the purple and orange flowers come out.