Beautiful, colorful landscaping! The tall grass is purple fountain grass (Pennisteum sectaceum 'Rubrum'), available from bustaniplantfarm.com (image credit). Looks like coleus and purple heart, and maybe begonias?
Ocotilla - This is a really cool neutral plant that adds a vertical element and height to the garden, yard, and landscape. It does well in the heat and harsh soil. Other than when it is in bloom the Ocotillo is a grayish neutral color that goes well in most any Southwest, desert, Arizona, or New Mexico landscaping.image by JustTooLazy, via Flickr