They are fixed it to the wall with three heavy duty angle brackets and some Ramset anchors.
I planed a Climbing Ficus. They're a fast growing climber which I've used before and been happy with. They're quite aggressive so can cause some mischief if they start growing on brittle/dislodgeable things. I'll make sure they don't creep onto my brickwork.
Growth after 8 months
Before and after
Bunnings Workshop member andarm advices anyone screening a heat pump or the external unit of an air conditioner to make sure they do not restrict the air flow to or from from the unit. Air flow restriction will impact the unit's efficiency.