New World Associates, Landscape Architects recently posted this article on their "Bloemhof Electricity Headquarters project" in Bellville, Western Cape, South Africa.
This was constructed in winter 2013 and had established over 3 summer seasons before the water was turned off in November 2016. As a conclusion they mention:
"Lessons learnt: good soil preparations, and we used a soil wetter called Terracottem to boost soil water retention, composting, mulching, and good plant research and selection, came together to produce a scheme that has substantially survived the drought, saving on replanting costs and reducing precious potable water consumption."