The way that I interpret "Xeriscape"... No supplemental watering...
So... where it rains frequently, you would have different plants from where you are dependent on a monsoon season like the arid west.
At my house... 200 ft deep beach sand where the rain drains through as soon as it falls... with predictable droughts... finding stuff that will tolerate the climate often means searching for stuff that is already being grown locally... and ideally... locally native... and even that is no guarantee of success...
So... I'm extremely interested in "landrace" crops... try that in your research...
Edit:
I tried going to
http://ourpafoodforest.com/... no luck.
your site in your signature seems to just be videos... really not into watching videos when I'm dependent on parking lot wifi...
