The designer has employed the concept of asymmetrical balance; one garden bed is larger than the other but is weighted to look equal. The stone pillar mimics the lamppost, bringing continuity to the space. Notice how the caladiums (Caladium sp, zones 9 to 10) are more prominent in the smaller bed on the right. Acting as a fulcrum, they balance the beds, making them visually pleasing. A carpet of ground cover in the foreground of each bed brings that additional dose of soothing continuity.
Kangaroo paws (anigozanthus) and leuchodendron
Mukdenia rossi. Never seen or heard of this before, Zone 4-9. Evergreen?
Leptinella always a good option