Hi Nicole.  The plant in the photograph is indeed Myrtle Spurge or Euphorbia myrsinites.  It is considered invasive in some of the western states with similar climates to here. I have seen it spread quite easily here in urban landscapes.  It is also known to cause some dermal and/oral toxicity from the milky white sap in the plant. I would not recommend this plant for use in a landscape based on its ability to spread quite easily and potential to be unsafe around children, pets, and cause skin irritation.

Here is a link to some other plants that may be used instead: http://extension.oregonstate.edu/deschutes/sites/default/files/xeri-all_1.pdf

Thanks,  Amy Jo